16-08-23

EnvelopeGenerator.Common/Entities/EnvelopeDocumentElement.vb

@@ -1,5 +1,5 @@
 Public Class EnvelopeDocumentElement
-    Public Property Id As Integer = 0
+    Public Property Id As Integer = -1
     Public Property X As Double
     Public Property Y As Double
     Public Property Width As Double
@@ -11,5 +11,18 @@
     Public Property [ReadOnly] As Boolean = False
     Public Property Page As Integer = 1
     Public Property Status As Constants.ElementStatus = Constants.ElementStatus.Created
-    Public Property AnnotationIndex As Integer
+    Public Property Index As Integer = 0
+
+    Public ReadOnly Property Top As Single
+        Get
+            Return Math.Round(Y, 5)
+        End Get
+    End Property
+
+    Public ReadOnly Property Left As Single
+        Get
+            Return Math.Round(X, 5)
+        End Get
+    End Property
+
 End Class

EnvelopeGenerator.Common/Models/DocumentModel.vb

@@ -64,6 +64,19 @@ Public Class DocumentModel
         End Try
     End Function
 
+    Public Function Delete(pDocumentId As Integer, pTransaction As SqlTransaction) As Boolean
+        Try
+            Dim oSql = "DELETE FROM [dbo].[TBSIG_ENVELOPE_DOCUMENT] WHERE GUID = @GUID"
+            Dim oCommand As New SqlCommand(oSql)
+            oCommand.Parameters.Add("GUID", SqlDbType.Int).Value = pDocumentId
+
+            Return Database.ExecuteNonQuery(oCommand, pTransaction)
+        Catch ex As Exception
+            Logger.Error(ex)
+            Return False
+        End Try
+    End Function
+
     Private Function GetDocumentId(pFilename As String, pEnvelope As Envelope, pTransaction As SqlTransaction) As Integer
         Try
             Return Database.GetScalarValue($"SELECT MAX(GUID) FROM TBSIG_ENVELOPE_DOCUMENT WHERE FILENAME = '{pFilename}' AND ENVELOPE_ID = {pEnvelope.Id}", pTransaction)

EnvelopeGenerator.Common/Models/ElementModel.vb

@@ -19,8 +19,7 @@ Public Class ElementModel
             .Y = pRow.ItemEx("POSITION_Y", 0.0),
             .Width = pRow.ItemEx("WIDTH", 0.0),
             .Height = pRow.ItemEx("HEIGHT", 0.0),
-            .Page = pRow.ItemEx("PAGE", 0),
+            .Page = pRow.ItemEx("PAGE", 0)
-            .AnnotationIndex = pRow.ItemEx("ANNOTATION_INDEX", 0)
         }
     End Function
 
@@ -41,7 +40,7 @@ Public Class ElementModel
 
     Public Function List(pDocumentId As Integer) As List(Of EnvelopeDocumentElement)
         Try
-            Dim oSql = $"SELECT * FROM [dbo].[TBSIG_DOCUMENT_RECEIVER_ELEMENT] WHERE DOCUMENT_ID = {pDocumentId} ORDER BY PAGE ASC, ANNOTATION_INDEX ASC"
+            Dim oSql = $"SELECT * FROM [dbo].[TBSIG_DOCUMENT_RECEIVER_ELEMENT] WHERE DOCUMENT_ID = {pDocumentId} ORDER BY PAGE ASC"
             Dim oTable = Database.GetDatatable(oSql)
 
             Return oTable?.Rows.Cast(Of DataRow).
@@ -67,8 +66,7 @@ Public Class ElementModel
                    ,[REQUIRED]
                    ,[READ_ONLY]
                    ,[STATUS]
-                   ,[PAGE]
+                   ,[PAGE])
-                   ,[ANNOTATION_INDEX])
                 VALUES
                    (@DOCUMENT_ID
                    ,@RECEIVER_ID
@@ -80,8 +78,7 @@ Public Class ElementModel
                    ,@REQUIRED
                    ,@READ_ONLY
                    ,@STATUS
-                   ,@PAGE
+                   ,@PAGE)"
-                   ,@INDEX)"
 
             Dim oCommand As New SqlCommand(oSql)
             oCommand.Parameters.Add("DOCUMENT_ID", SqlDbType.NVarChar).Value = pElement.DocumentId
@@ -95,7 +92,6 @@ Public Class ElementModel
             oCommand.Parameters.Add("READ_ONLY", SqlDbType.Bit).Value = pElement.ReadOnly
             oCommand.Parameters.Add("STATUS", SqlDbType.NVarChar).Value = pElement.Status.ToString
             oCommand.Parameters.Add("PAGE", SqlDbType.Int).Value = pElement.Page
-            oCommand.Parameters.Add("INDEX", SqlDbType.Int).Value = pElement.AnnotationIndex
 
             If Database.ExecuteNonQuery(oCommand) Then
                 pElement.Id = GetElementId(pElement)
@@ -154,4 +150,24 @@ Public Class ElementModel
             Return False
         End Try
     End Function
+
+    Public Function DeleteElements(pReceiverId As Integer, pDocumentId As Integer, pTransaction As SqlTransaction) As Boolean
+        Try
+            Dim oSql = $"DELETE FROM TBSIG_DOCUMENT_RECEIVER_ELEMENT WHERE RECEIVER_ID = {pReceiverId} AND DOCUMENT_ID = {pDocumentId}"
+            Return Database.ExecuteNonQuery(oSql, pTransaction)
+        Catch ex As Exception
+            Logger.Error(ex)
+            Return False
+        End Try
+    End Function
+
+    Public Function DeleteElements(pDocumentId As Integer, pTransaction As SqlTransaction) As Boolean
+        Try
+            Dim oSql = $"DELETE FROM TBSIG_DOCUMENT_RECEIVER_ELEMENT WHERE DOCUMENT_ID = {pDocumentId}"
+            Return Database.ExecuteNonQuery(oSql, pTransaction)
+        Catch ex As Exception
+            Logger.Error(ex)
+            Return False
+        End Try
+    End Function
 End Class

EnvelopeGenerator.Common/Models/EnvelopeModel.vb

@@ -80,10 +80,10 @@ Public Class EnvelopeModel
         End Try
     End Function
 
-    Public Function Delete(pEnvelope As Envelope) As Boolean
+    Public Function Delete(pEnvelope As Envelope, pTransaction As SqlTransaction) As Boolean
         Try
             Dim oSql = $"DELETE FROM [dbo].[TBSIG_ENVELOPE] WHERE GUID = {pEnvelope.Id}"
-            Return Database.ExecuteNonQuery(oSql)
+            Return Database.ExecuteNonQuery(oSql, pTransaction)
 
         Catch ex As Exception
             Return False

EnvelopeGenerator.Common/Models/ReceiverModel.vb

@@ -137,7 +137,12 @@ Public Class ReceiverModel
 
     Public Function ListReceivers(pExistingReceivers As IEnumerable(Of EnvelopeReceiver)) As IEnumerable(Of EnvelopeReceiver)
         Try
+            If pExistingReceivers.Count = 0 Then
+                Return New List(Of EnvelopeReceiver)
+            End If
+
             Dim oAddresses = pExistingReceivers.Select(Function(r) $"'{r.Email}'").JoinToString(",")
+
             Dim oSql = $"SELECT * FROM [dbo].[TBSIG_RECEIVER] WHERE EMAIL_ADDRESS IN ({oAddresses})"
             Dim oTable = Database.GetDatatable(oSql)
 
@@ -151,10 +156,10 @@ Public Class ReceiverModel
         End Try
     End Function
 
-    Public Function Delete(pReceiverId As Integer, pDocumentId As Integer) As Boolean
+    Public Function Delete(pReceiverId As Integer, pEnvelopeId As Integer, pTransaction As SqlTransaction) As Boolean
         Try
-            Dim oSql = $"DELETE FROM TBSIG_DOCUMENT_RECEIVER WHERE RECEIVER_ID = {pReceiverId} AND DOCUMENT_ID = {pDocumentId}"
+            Dim oSql = $"DELETE FROM TBSIG_ENVELOPE_RECEIVER WHERE RECEIVER_ID = {pReceiverId} AND ENVELOPE_ID = {pEnvelopeId}"
-            Return Database.ExecuteNonQuery(oSql)
+            Return Database.ExecuteNonQuery(oSql, pTransaction)
 
         Catch ex As Exception
             Logger.Error(ex)

EnvelopeGenerator.Form/Controllers/BaseController.vb

@@ -0,0 +1,101 @@
+Imports DigitalData.Modules.Database
+Imports DigitalData.Modules.Base
+Imports EnvelopeGenerator.Common
+Imports System.Data.SqlClient
+
+Public MustInherit Class BaseController
+    Inherits BaseClass
+
+    Public EnvelopeModel As EnvelopeModel
+    Public DocumentModel As DocumentModel
+    Public ReceiverModel As ReceiverModel
+    Public ElementModel As ElementModel
+    Public HistoryModel As HistoryModel
+    Public UserModel As UserModel
+
+    Public ReadOnly Property Database As MSSQLServer
+    Public ReadOnly Property State As State
+
+    Public Sub New(pState As State)
+        MyBase.New(pState.LogConfig)
+        State = pState
+        Database = pState.Database
+        InitializeModels(pState)
+    End Sub
+
+    Private Sub InitializeModels(pState As State)
+        EnvelopeModel = New EnvelopeModel(pState)
+        DocumentModel = New DocumentModel(pState)
+        ReceiverModel = New ReceiverModel(pState)
+        ElementModel = New ElementModel(pState)
+        HistoryModel = New HistoryModel(pState)
+        UserModel = New UserModel(pState)
+    End Sub
+
+    Public Function DeleteEnvelope(pEnvelope As Envelope) As Boolean
+        Dim oConnection As SqlConnection = Database.GetConnection()
+        Dim oTransaction As SqlTransaction = oConnection.BeginTransaction()
+
+        Try
+            Dim oResult = pEnvelope.Documents.
+                Select(Function(d) DeleteDocument(d, oTransaction)).
+                All(Function(r) r = True)
+
+            If oResult = False Then
+                Throw New ApplicationException("could not delete documents")
+            End If
+
+            Dim oResult2 = pEnvelope.Receivers.
+                Select(Function(r) ReceiverModel.Delete(r.Id, pEnvelope.Id, oTransaction)).
+                All(Function(r) r = True)
+
+            If oResult2 = False Then
+                Throw New ApplicationException("could not delete receivers")
+            End If
+
+            Dim oResult3 = EnvelopeModel.Delete(pEnvelope, oTransaction)
+
+            If oResult3 = False Then
+                Throw New ApplicationException("could not delete envelope")
+            End If
+
+            oTransaction.Commit()
+            Return True
+
+        Catch ex As Exception
+            Logger.Error(ex)
+            oTransaction.Rollback()
+            Return False
+
+        End Try
+    End Function
+
+    Public Function DeleteDocument(pDocument As EnvelopeDocument, pTransaction As SqlTransaction) As Boolean
+        Try
+
+            If DocumentModel.Delete(pDocument.Id, pTransaction) = True Then
+                Dim oResult = ElementModel.DeleteElements(pDocument.Id, pTransaction)
+
+                If oResult = False Then
+                    Throw New ApplicationException("Could not delete elements!")
+                End If
+            Else
+                Throw New ApplicationException("Could not delete document!")
+            End If
+
+        Catch ex As Exception
+            Logger.Error(ex)
+
+            Return False
+        End Try
+
+        Try
+            IO.File.Delete(pDocument.Filepath)
+        Catch ex As Exception
+            Logger.Error(ex)
+            Return False
+        End Try
+
+        Return True
+    End Function
+End Class

EnvelopeGenerator.Form/Controllers/EnvelopeEditorController.vb

@@ -1,60 +1,28 @@
-Imports System.Data.Common
+Imports System.Data.SqlClient
-Imports System.Data.SqlClient
 Imports System.IO
-Imports DigitalData.Modules.Base
-Imports DigitalData.Modules.Database
 Imports DigitalData.Modules.Logging
 Imports EnvelopeGenerator.Common
 Imports EnvelopeGenerator.Common.Constants
 
 Public Class EnvelopeEditorController
-    Inherits BaseClass
+    Inherits BaseController
-
-    Private ReadOnly Database As MSSQLServer
-    Private ReadOnly State As State = Nothing
-
-    Private EnvelopeModel As EnvelopeModel
-    Private DocumentModel As DocumentModel
-    Private ReceiverModel As ReceiverModel
-    Private ElementModel As ElementModel
-    Private HistoryModel As HistoryModel
-    Private UserModel As UserModel
 
     Public ReadOnly Envelope As Envelope = Nothing
 
     Public Sub New(pState As State)
-        MyBase.New(pState.LogConfig)
+        MyBase.New(pState)
-
-        Database = pState.Database
-        State = pState
-
-        InitializeModels(pState)
 
         Envelope = CreateEnvelope()
     End Sub
 
     Public Sub New(pState As State, pEnvelope As Envelope)
-        MyBase.New(pState.LogConfig)
+        MyBase.New(pState)
-
-        Database = pState.Database
-        State = pState
-
-        InitializeModels(pState)
 
         Envelope = pEnvelope
         Envelope.Documents = DocumentModel.List(pEnvelope.Id)
         Envelope.Receivers = ReceiverModel.ListEnvelopeReceivers(pEnvelope.Id)
     End Sub
 
-    Private Sub InitializeModels(pState As State)
-        EnvelopeModel = New EnvelopeModel(pState)
-        DocumentModel = New DocumentModel(pState)
-        ReceiverModel = New ReceiverModel(pState)
-        ElementModel = New ElementModel(pState)
-        HistoryModel = New HistoryModel(pState)
-        UserModel = New UserModel(pState)
-    End Sub
-
 #Region "Public"
     Public Function CreateEnvelope() As Envelope
         Dim oEnvelope As New Envelope() With {
@@ -114,9 +82,7 @@ Public Class EnvelopeEditorController
 
     Public Function CleanupEnvelope() As Boolean
         If Envelope.Status = Common.Constants.EnvelopeStatus.Created Then
-            'TODO: Delete Documents and Receivers and elements
+            Return DeleteEnvelope(Envelope)
-            Return EnvelopeModel.Delete(Envelope)
-
         Else
             Return True
         End If
@@ -141,14 +107,17 @@ Public Class EnvelopeEditorController
         End Try
     End Function
 
-    Public Function DeleteDocument(pDocument As EnvelopeDocument) As Boolean
+    Public Overloads Function DeleteDocument(pDocument As EnvelopeDocument) As Boolean
-        Dim oSql = "DELETE FROM [dbo].[TBSIG_ENVELOPE_DOCUMENT] WHERE FILENAME = @FILENAME AND ENVELOPE_ID = @ENVELOPE_ID"
+        Dim oConnection As SqlConnection = Database.GetConnection
-        Dim oCommand As New SqlCommand(oSql)
+        Dim oTransaction As SqlTransaction = oConnection.BeginTransaction
-        oCommand.Parameters.Add("FILENAME", SqlDbType.NVarChar).Value = pDocument.Filename
-        oCommand.Parameters.Add("ENVELOPE_ID", SqlDbType.Int).Value = Envelope.Id
-        'TODO: delete document file, from temp and from documentpath
 
-        Return Database.ExecuteNonQuery(oCommand)
+        If DeleteDocument(pDocument, oTransaction) = True Then
+            oTransaction.Commit()
+            Return True
+        Else
+            oTransaction.Rollback()
+            Return False
+        End If
     End Function
 
     Public Function SaveEnvelopeDocumentsToFilesystem(pEnvelope As Envelope) As Boolean
@@ -206,28 +175,21 @@ Public Class EnvelopeEditorController
         End Try
     End Function
 
-    Public Function CreateEnvelopeReceivers(pReceivers As List(Of EnvelopeReceiver)) As Boolean
+    Public Function CreateEnvelopeReceivers(pCurrentReceivers As List(Of EnvelopeReceiver)) As Boolean
-        Dim oExistingReceivers As List(Of EnvelopeReceiver) = ReceiverModel.ListReceivers(pReceivers)
+        Dim oExistingReceivers As List(Of EnvelopeReceiver) = ReceiverModel.ListReceivers(pCurrentReceivers)
         Dim oExistingAddresses = oExistingReceivers.Select(Function(r) r.Email)
 
-        Dim oNewReceivers = pReceivers.
+        Dim oNewReceivers = pCurrentReceivers.
                 Where(Function(r) Not oExistingAddresses.Contains(r.Email)).ToList()
 
-        Dim oOldReceivers = pReceivers.
+        For Each oReceiver In oNewReceivers
-                Where(Function(r) oExistingAddresses.Contains(r.Email)).ToList()
+            oReceiver.Id = 0
-
-        For Each oReceiver In oOldReceivers
-            oReceiver.Id = oExistingReceivers.
-                    Where(Function(r) r.Email = oReceiver.Email).
-                    Select(Function(r) r.Id).
-                    FirstOrDefault()
         Next
 
         Dim oConnection = Database.GetConnection()
         Dim oTransaction = oConnection.BeginTransaction()
 
         Try
-
             If InsertReceivers(oNewReceivers, oTransaction) = False Then
                 Throw New ApplicationException("Could not insert receivers!")
             End If
@@ -261,16 +223,35 @@ Public Class EnvelopeEditorController
         End Try
     End Function
 
-    Private Function DeleteReceiver(pReceiver As EnvelopeReceiver) As Boolean
+    Public Function DeleteReceiver(pReceiver As EnvelopeReceiver) As Boolean
+        Dim oConnection As SqlConnection = Database.GetConnection()
+        Dim oTransaction As SqlTransaction = oConnection.BeginTransaction()
+
         Try
+            If ReceiverModel.Delete(pReceiver.Id, Envelope.Id, oTransaction) = True Then
+                Dim oResult = Envelope.Documents.
+                    Select(Function(d) ElementModel.DeleteElements(pReceiver.Id, d.Id, oTransaction)).
+                    All(Function(pResult) pResult = True)
+
+                If oResult = False Then
+                    Throw New ApplicationException("Could not delete elements!")
+                End If
+            Else
+                Throw New ApplicationException("Could not delete receiver!")
+            End If
+
+            oTransaction.Commit()
+            Return True
 
         Catch ex As Exception
-
+            Logger.Error(ex)
+            oTransaction.Rollback()
+            Return False
         End Try
     End Function
 
-    Public Function ElementsExist(pDocumentId As Integer, pReceiverId As Integer) As Boolean
+    Public Function ElementsExist(pReceiverId As Integer) As Boolean
-        Return ElementModel.ElementsExist(pDocumentId, pReceiverId)
+        Return ElementModel.ElementsExist(Envelope.Id, pReceiverId)
     End Function
 
     Private Function InsertReceivers(pReceivers As List(Of EnvelopeReceiver), pTransaction As SqlTransaction) As Boolean

EnvelopeGenerator.Form/Controllers/EnvelopeListController.vb

@@ -1,22 +1,18 @@
-Imports DigitalData.Modules.Base
+Imports EnvelopeGenerator.Common
-Imports DigitalData.Modules.Database
-Imports EnvelopeGenerator.Common
 
 Public Class EnvelopeListController
-    Inherits BaseClass
+    Inherits BaseController
-    Private ReadOnly Database As MSSQLServer
-    Private ReadOnly State As State
-    Private ReadOnly EnvelopeModel As EnvelopeModel
 
     Public Sub New(pState As State)
-        MyBase.New(pState.LogConfig)
+        MyBase.New(pState)
-        Database = pState.Database
-        State = pState
-        EnvelopeModel = New EnvelopeModel(pState)
     End Sub
 
     Public Function ListEnvelopes() As IEnumerable(Of Envelope)
         Return EnvelopeModel.List()
     End Function
 
+    Public Overloads Function DeleteEnvelope(pEnvelope As Envelope) As Boolean
+        Return MyBase.DeleteEnvelope(pEnvelope)
+    End Function
+
 End Class

EnvelopeGenerator.Form/Controllers/FieldEditorController.vb

@@ -1,38 +1,75 @@
-Imports DigitalData.Modules.Base
+Imports EnvelopeGenerator.Common
-Imports DigitalData.Modules.Database
-Imports EnvelopeGenerator.Common
 Imports GdPicture14.Annotations
 
 Public Class FieldEditorController
-    Inherits BaseClass
+    Inherits BaseController
 
-    Private ReadOnly ElementModel As ElementModel
-
-    Private ReadOnly Database As MSSQLServer
     Private ReadOnly Document As EnvelopeDocument
     Public Property Elements As New List(Of EnvelopeDocumentElement)
 
+    Public Class ElementInfo
+        Public ReceiverId As Integer
+        Public Page As Integer
+        Public Guid As Integer
+    End Class
+
     Public Sub New(pState As State, pDocument As EnvelopeDocument)
-        MyBase.New(pState.LogConfig)
+        MyBase.New(pState)
-        Database = pState.Database
         Document = pDocument
 
         ElementModel = New ElementModel(pState)
     End Sub
 
-    Public Sub AddOrUpdateElement(pAnnotation As AnnotationStickyNote)
+    Public Function GetElementInfo(pAnnotationTag As String) As ElementInfo
-        Dim oTag As String() = pAnnotation.Tag.Split("|"c)
+        Dim oTag As String() = pAnnotationTag.Split("|"c)
         Dim oReceiverId = Integer.Parse(oTag(0))
         Dim oPage = Integer.Parse(oTag(1))
-        Dim oIndex = Integer.Parse(oTag(2))
+        Dim oGuid = Integer.Parse(oTag(2))
-        Dim oELement = Elements.Where(Function(e) e.AnnotationIndex = oIndex And e.Page = oPage And e.ReceiverId = oReceiverId).SingleOrDefault()
 
-        If oELement IsNot Nothing Then
+        Return New ElementInfo With {
-            oELement.Height = pAnnotation.Height
+            .Guid = oGuid,
-            oELement.Width = pAnnotation.Width
+            .Page = oPage,
-            oELement.X = pAnnotation.Left
+            .ReceiverId = oReceiverId
-            oELement.Y = pAnnotation.Top
+        }
+    End Function
+
+    Private Function GetElementByPosition(pAnnotation As AnnotationStickyNote, pPage As Integer, pReceiverId As Integer) As EnvelopeDocumentElement
+        Dim oElement = Elements.
+            Where(Function(e)
+                      Return e.Left = CSng(Math.Round(pAnnotation.Left, 5)) And
+                      e.Top = CSng(Math.Round(pAnnotation.Top, 5)) And
+                      e.Page = pPage And
+                      e.ReceiverId = pReceiverId
+                  End Function).SingleOrDefault()
+        Return oElement
+    End Function
+
+    Private Function GetElementByGuid(pGuid As Integer) As EnvelopeDocumentElement
+        Dim oElement = Elements.Where(Function(e) pGuid = e.Id).SingleOrDefault()
+        Return oElement
+    End Function
+
+    Public Function GetElement(pAnnotation As AnnotationStickyNote) As EnvelopeDocumentElement
+        Dim oInfo = GetElementInfo(pAnnotation.Tag)
+
+        If oInfo.Guid = -1 Then
+            Return GetElementByPosition(pAnnotation, oInfo.Page, oInfo.ReceiverId)
         Else
+            Return GetElementByGuid(oInfo.Guid)
+        End If
+    End Function
+
+    Public Sub AddOrUpdateElement(pAnnotation As AnnotationStickyNote)
+        Dim oElement = GetElement(pAnnotation)
+
+        If oElement IsNot Nothing Then
+            oElement.Height = pAnnotation.Height
+            oElement.Width = pAnnotation.Width
+            oElement.X = pAnnotation.Left
+            oElement.Y = pAnnotation.Top
+        Else
+            Dim oInfo = GetElementInfo(pAnnotation.Tag)
+
             Elements.Add(New EnvelopeDocumentElement() With {
                 .ElementType = Common.Constants.ElementType.Signature.ToString,
                 .Height = pAnnotation.Height,
@@ -40,13 +77,18 @@ Public Class FieldEditorController
                 .X = pAnnotation.Left,
                 .Y = pAnnotation.Top,
                 .DocumentId = Document.Id,
-                .ReceiverId = oReceiverId,
+                .ReceiverId = oInfo.ReceiverId,
-                .AnnotationIndex = oIndex,
+                .Page = oInfo.Page
-                .Page = oPage
             })
         End If
     End Sub
 
+    Public Function ClearElements(pPage As Integer, pReceiverId As Integer) As IEnumerable(Of EnvelopeDocumentElement)
+        Return Elements.
+            Where(Function(e) e.Page <> pPage And e.ReceiverId <> pReceiverId).
+            ToList()
+    End Function
+
     Public Function LoadElements() As Boolean
         Elements = ElementModel.List(Document.Id)
 
@@ -77,4 +119,20 @@ Public Class FieldEditorController
         End Try
     End Function
 
+    Public Function DeleteElement(pElement As EnvelopeDocumentElement) As Boolean
+        Try
+            ' Element aus Datenbank löschen
+            If ElementModel.DeleteElement(pElement) Then
+                Dim oElement = New List(Of EnvelopeDocumentElement)() From {pElement}
+                Elements = Elements.Except(oElement).ToList()
+                Return True
+            Else
+                Logger.Error("Element [{0}] could not be deleted!", pElement.Id)
+                Return False
+            End If
+        Catch ex As Exception
+            Logger.Error(ex)
+            Return False
+        End Try
+    End Function
 End Class

EnvelopeGenerator.Form/EnvelopeGenerator.Form.vbproj

@@ -105,6 +105,7 @@
     <Compile Include="Controllers\EnvelopeEditorController.vb" />
     <Compile Include="Controllers\EnvelopeListController.vb" />
     <Compile Include="Controllers\FieldEditorController.vb" />
+    <Compile Include="Controllers\BaseController.vb" />
     <Compile Include="frmEnvelopeEditor.vb">
       <SubType>Form</SubType>
     </Compile>

EnvelopeGenerator.Form/My Project/licenses.licx

@@ -1,9 +1,10 @@
-DevExpress.XtraEditors.SearchLookUpEdit, DevExpress.XtraGrid.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
 DevExpress.XtraEditors.Repository.RepositoryItemLookUpEdit, DevExpress.XtraEditors.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
-DevExpress.XtraBars.Ribbon.RibbonControl, DevExpress.XtraBars.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
 DevExpress.XtraLayout.LayoutControl, DevExpress.XtraLayout.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
-DevExpress.XtraEditors.Repository.RepositoryItemComboBox, DevExpress.XtraEditors.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
-DevExpress.XtraEditors.TextEdit, DevExpress.XtraEditors.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
-DevExpress.XtraGrid.GridControl, DevExpress.XtraGrid.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
 DevExpress.XtraBars.BarManager, DevExpress.XtraBars.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
+DevExpress.XtraGrid.GridControl, DevExpress.XtraGrid.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
+DevExpress.XtraEditors.SearchLookUpEdit, DevExpress.XtraGrid.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
+DevExpress.XtraEditors.TextEdit, DevExpress.XtraEditors.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
+DevExpress.XtraBars.Ribbon.RibbonControl, DevExpress.XtraBars.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
+DevExpress.XtraEditors.PictureEdit, DevExpress.XtraEditors.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
+DevExpress.XtraEditors.Repository.RepositoryItemComboBox, DevExpress.XtraEditors.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a
 DevExpress.XtraEditors.Repository.RepositoryItemTextEdit, DevExpress.XtraEditors.v21.2, Version=21.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a

EnvelopeGenerator.Form/frmEnvelopeEditor.Designer.vb

@@ -29,10 +29,11 @@ Partial Public Class frmEnvelopeEditor
     Private Sub InitializeComponent()
         Me.components = New System.ComponentModel.Container()
         Dim resources As System.ComponentModel.ComponentResourceManager = New System.ComponentModel.ComponentResourceManager(GetType(frmEnvelopeEditor))
-        Dim TableColumnDefinition2 As DevExpress.XtraEditors.TableLayout.TableColumnDefinition = New DevExpress.XtraEditors.TableLayout.TableColumnDefinition()
+        Dim TableColumnDefinition1 As DevExpress.XtraEditors.TableLayout.TableColumnDefinition = New DevExpress.XtraEditors.TableLayout.TableColumnDefinition()
-        Dim TableRowDefinition3 As DevExpress.XtraEditors.TableLayout.TableRowDefinition = New DevExpress.XtraEditors.TableLayout.TableRowDefinition()
+        Dim TableRowDefinition1 As DevExpress.XtraEditors.TableLayout.TableRowDefinition = New DevExpress.XtraEditors.TableLayout.TableRowDefinition()
-        Dim TableRowDefinition4 As DevExpress.XtraEditors.TableLayout.TableRowDefinition = New DevExpress.XtraEditors.TableLayout.TableRowDefinition()
+        Dim TableRowDefinition2 As DevExpress.XtraEditors.TableLayout.TableRowDefinition = New DevExpress.XtraEditors.TableLayout.TableRowDefinition()
-        Dim TileViewItemElement2 As DevExpress.XtraGrid.Views.Tile.TileViewItemElement = New DevExpress.XtraGrid.Views.Tile.TileViewItemElement()
+        Dim TileViewItemElement1 As DevExpress.XtraGrid.Views.Tile.TileViewItemElement = New DevExpress.XtraGrid.Views.Tile.TileViewItemElement()
+        Dim SplashScreenManager1 As DevExpress.XtraSplashScreen.SplashScreenManager = New DevExpress.XtraSplashScreen.SplashScreenManager(Me, Nothing, True, True)
         Me.colFilename = New DevExpress.XtraGrid.Columns.TileViewColumn()
         Me.RibbonControl1 = New DevExpress.XtraBars.Ribbon.RibbonControl()
         Me.btnSave = New DevExpress.XtraBars.BarButtonItem()
@@ -41,11 +42,13 @@ Partial Public Class frmEnvelopeEditor
         Me.btnDeleteFile = New DevExpress.XtraBars.BarButtonItem()
         Me.BarButtonItem1 = New DevExpress.XtraBars.BarButtonItem()
         Me.btnEditFields = New DevExpress.XtraBars.BarButtonItem()
+        Me.btnDeleteReceiver = New DevExpress.XtraBars.BarButtonItem()
         Me.RibbonPage1 = New DevExpress.XtraBars.Ribbon.RibbonPage()
         Me.RibbonPageGroup1 = New DevExpress.XtraBars.Ribbon.RibbonPageGroup()
         Me.RibbonPageGroup2 = New DevExpress.XtraBars.Ribbon.RibbonPageGroup()
         Me.RibbonPageGroup3 = New DevExpress.XtraBars.Ribbon.RibbonPageGroup()
         Me.RibbonPageGroup4 = New DevExpress.XtraBars.Ribbon.RibbonPageGroup()
+        Me.RibbonPageGroup5 = New DevExpress.XtraBars.Ribbon.RibbonPageGroup()
         Me.SplitContainerControl1 = New DevExpress.XtraEditors.SplitContainerControl()
         Me.GridDocuments = New DevExpress.XtraGrid.GridControl()
         Me.ViewDocuments = New DevExpress.XtraGrid.Views.Tile.TileView()
@@ -67,8 +70,6 @@ Partial Public Class frmEnvelopeEditor
         Me.FrmEditorBindingSource = New System.Windows.Forms.BindingSource(Me.components)
         Me.EnvelopeDocumentBindingSource = New System.Windows.Forms.BindingSource(Me.components)
         Me.OpenFileDialog1 = New System.Windows.Forms.OpenFileDialog()
-        Me.RibbonPageGroup5 = New DevExpress.XtraBars.Ribbon.RibbonPageGroup()
-        Me.btnDeleteReceiver = New DevExpress.XtraBars.BarButtonItem()
         CType(Me.RibbonControl1, System.ComponentModel.ISupportInitialize).BeginInit()
         CType(Me.SplitContainerControl1, System.ComponentModel.ISupportInitialize).BeginInit()
         CType(Me.SplitContainerControl1.Panel1, System.ComponentModel.ISupportInitialize).BeginInit()
@@ -163,6 +164,12 @@ Partial Public Class frmEnvelopeEditor
         Me.btnEditFields.ImageOptions.SvgImage = CType(resources.GetObject("btnEditFields.ImageOptions.SvgImage"), DevExpress.Utils.Svg.SvgImage)
         Me.btnEditFields.Name = "btnEditFields"
         '
+        'btnDeleteReceiver
+        '
+        Me.btnDeleteReceiver.Caption = "Empfänger löschen"
+        Me.btnDeleteReceiver.Id = 8
+        Me.btnDeleteReceiver.Name = "btnDeleteReceiver"
+        '
         'RibbonPage1
         '
         Me.RibbonPage1.Groups.AddRange(New DevExpress.XtraBars.Ribbon.RibbonPageGroup() {Me.RibbonPageGroup1, Me.RibbonPageGroup2, Me.RibbonPageGroup3, Me.RibbonPageGroup4, Me.RibbonPageGroup5})
@@ -196,6 +203,12 @@ Partial Public Class frmEnvelopeEditor
         Me.RibbonPageGroup4.Name = "RibbonPageGroup4"
         Me.RibbonPageGroup4.Text = "RibbonPageGroup4"
         '
+        'RibbonPageGroup5
+        '
+        Me.RibbonPageGroup5.ItemLinks.Add(Me.btnDeleteReceiver)
+        Me.RibbonPageGroup5.Name = "RibbonPageGroup5"
+        Me.RibbonPageGroup5.Text = "RibbonPageGroup5"
+        '
         'SplitContainerControl1
         '
         Me.SplitContainerControl1.Dock = System.Windows.Forms.DockStyle.Fill
@@ -233,18 +246,18 @@ Partial Public Class frmEnvelopeEditor
         Me.ViewDocuments.GridControl = Me.GridDocuments
         Me.ViewDocuments.Name = "ViewDocuments"
         Me.ViewDocuments.OptionsTiles.ItemSize = New System.Drawing.Size(248, 202)
-        Me.ViewDocuments.TileColumns.Add(TableColumnDefinition2)
+        Me.ViewDocuments.TileColumns.Add(TableColumnDefinition1)
-        TableRowDefinition3.Length.Value = 152.0R
+        TableRowDefinition1.Length.Value = 152.0R
-        TableRowDefinition4.Length.Value = 34.0R
+        TableRowDefinition2.Length.Value = 34.0R
-        Me.ViewDocuments.TileRows.Add(TableRowDefinition3)
+        Me.ViewDocuments.TileRows.Add(TableRowDefinition1)
-        Me.ViewDocuments.TileRows.Add(TableRowDefinition4)
+        Me.ViewDocuments.TileRows.Add(TableRowDefinition2)
-        TileViewItemElement2.Column = Me.colFilename
+        TileViewItemElement1.Column = Me.colFilename
-        TileViewItemElement2.ImageOptions.ImageAlignment = DevExpress.XtraEditors.TileItemContentAlignment.MiddleCenter
+        TileViewItemElement1.ImageOptions.ImageAlignment = DevExpress.XtraEditors.TileItemContentAlignment.MiddleCenter
-        TileViewItemElement2.ImageOptions.ImageScaleMode = DevExpress.XtraEditors.TileItemImageScaleMode.Squeeze
+        TileViewItemElement1.ImageOptions.ImageScaleMode = DevExpress.XtraEditors.TileItemImageScaleMode.Squeeze
-        TileViewItemElement2.RowIndex = 1
+        TileViewItemElement1.RowIndex = 1
-        TileViewItemElement2.Text = "colFilename"
+        TileViewItemElement1.Text = "colFilename"
-        TileViewItemElement2.TextAlignment = DevExpress.XtraEditors.TileItemContentAlignment.MiddleCenter
+        TileViewItemElement1.TextAlignment = DevExpress.XtraEditors.TileItemContentAlignment.MiddleCenter
-        Me.ViewDocuments.TileTemplate.Add(TileViewItemElement2)
+        Me.ViewDocuments.TileTemplate.Add(TileViewItemElement1)
         '
         'SplitContainerControl2
         '
@@ -405,17 +418,9 @@ Partial Public Class frmEnvelopeEditor
         Me.OpenFileDialog1.FileName = "OpenFileDialog1"
         Me.OpenFileDialog1.Filter = "PDF Files|*.pdf"
         '
-        'RibbonPageGroup5
+        'SplashScreenManager1
         '
-        Me.RibbonPageGroup5.ItemLinks.Add(Me.btnDeleteReceiver)
+        SplashScreenManager1.ClosingDelay = 500
-        Me.RibbonPageGroup5.Name = "RibbonPageGroup5"
-        Me.RibbonPageGroup5.Text = "RibbonPageGroup5"
-        '
-        'btnDeleteReceiver
-        '
-        Me.btnDeleteReceiver.Caption = "Empfänger löschen"
-        Me.btnDeleteReceiver.Id = 8
-        Me.btnDeleteReceiver.Name = "btnDeleteReceiver"
         '
         'frmEnvelopeEditor
         '

EnvelopeGenerator.Form/frmEnvelopeEditor.vb

@@ -1,4 +1,6 @@
 Imports System.ComponentModel
+Imports System.Threading.Tasks
+Imports DevExpress.XtraSplashScreen
 Imports DigitalData.Modules.Logging
 Imports EnvelopeGenerator.Common
 
@@ -69,23 +71,30 @@ Partial Public Class frmEnvelopeEditor
     End Sub
 
     Private Sub btnEditFields_ItemClick(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles btnEditFields.ItemClick
-        If ViewDocuments.GetSelectedRows().Count > 0 Then
+        Dim oHandle = SplashScreenManager.ShowOverlayForm(Me)
-            Dim oDocument As EnvelopeDocument = DirectCast(ViewDocuments.GetFocusedRow(), EnvelopeDocument)
-            Dim oGDPictureKey As String = "21182889975216572111813147150675976632"
 
+        Try
+            If ViewDocuments.GetSelectedRows().Count > 0 Then
+                Dim oDocument As EnvelopeDocument = DirectCast(ViewDocuments.GetFocusedRow(), EnvelopeDocument)
+                Dim oGDPictureKey As String = "21182889975216572111813147150675976632"
 
-            If SaveEnvelope() Then
+                If SaveEnvelope() Then
-                Dim oForm As New frmFieldEditor() With {
+                    Dim oForm As New frmFieldEditor() With {
-                    .Document = Controller.Envelope.Documents.
+                        .Document = Controller.Envelope.Documents.
-                        Where(Function(d) d.Filename = oDocument.Filename).
+                            Where(Function(d) d.Filename = oDocument.Filename).
-                        SingleOrDefault(),
+                            SingleOrDefault(),
-                    .GDPictureKey = oGDPictureKey,
+                        .GDPictureKey = oGDPictureKey,
-                    .Receivers = Receivers.ToList,
+                        .Receivers = Receivers.ToList,
-                    .State = State
+                        .State = State
-                }
+                    }
-                oForm.ShowDialog()
+                    oForm.Show()
+                End If
             End If
-        End If
+        Catch ex As Exception
+            Logger.Error(ex)
+        Finally
+            SplashScreenManager.CloseOverlayForm(oHandle)
+        End Try
     End Sub
 
     Private Function SaveEnvelope() As Boolean
@@ -95,16 +104,10 @@ Partial Public Class frmEnvelopeEditor
         ' Ensure all receivers are saved
         ViewReceivers.CloseEditor()
 
-        Dim oReceivers = Receivers.ToList
-        If Controller.CreateEnvelopeReceivers(Receivers.ToList) = False Then
-            MsgBox("Fehler beim Speichern der Empfänger!", MsgBoxStyle.Critical, Text)
-            Return False
-        End If
-
         Dim oEnvelope = Controller.Envelope
         oEnvelope.Subject = oSubject
         oEnvelope.Message = oMessage
-        oEnvelope.Receivers = oReceivers
+        oEnvelope.Receivers = Receivers.ToList
         oEnvelope.Documents = Documents.ToList
 
         Dim oErrors = oEnvelope.Validate()
@@ -112,7 +115,14 @@ Partial Public Class frmEnvelopeEditor
             Dim oError = "Fehler beim Speichern des Umschlags:" & vbNewLine & vbNewLine & String.Join(vbNewLine, oErrors)
             MsgBox(oError, MsgBoxStyle.Exclamation, Text)
             Return False
-        ElseIf Controller.SaveEnvelope(oEnvelope) = False Then
+        End If
+
+        If Controller.CreateEnvelopeReceivers(oEnvelope.Receivers) = False Then
+            MsgBox("Fehler beim Speichern der Empfänger!", MsgBoxStyle.Critical, Text)
+            Return False
+        End If
+
+        If Controller.SaveEnvelope(oEnvelope) = False Then
             MsgBox("Fehler beim Speichern des Umschlags!", MsgBoxStyle.Critical, Text)
             Return False
         Else
@@ -120,22 +130,31 @@ Partial Public Class frmEnvelopeEditor
         End If
     End Function
 
-    Private Sub RibbonControl1_Click(sender As Object, e As EventArgs) Handles RibbonControl1.Click
-
-    End Sub
-
     Private Sub btnDeleteReceiver_ItemClick(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles btnDeleteReceiver.ItemClick
         If ViewReceivers.SelectedRowsCount = 0 Then
             Exit Sub
         End If
 
-        ' TODO: Delete receivers for ALL documents
+        Dim oReceiver As EnvelopeReceiver = ViewReceivers.GetFocusedRow()
+
+        If oReceiver Is Nothing Then
+            Exit Sub
+        End If
 
-        Dim oMessage2 = "Es gibt für diesen Empfänger bereits Elemente. Wollen Sie den Empfänger trotzdem löschen?"
         Dim oMessage = "Wollen Sie den ausgewählten Empfänger löschen?"
+        If Controller.ElementsExist(oReceiver.Id) Then
+            oMessage = "Es gibt für diesen Empfänger bereits Elemente. Wollen Sie den Empfänger trotzdem löschen?"
+        End If
+
         If MsgBox(oMessage, MsgBoxStyle.Question Or MsgBoxStyle.YesNo, Text) = MsgBoxResult.No Then
             Exit Sub
         End If
 
+        If Controller.DeleteReceiver(oReceiver) Then
+            Receivers.Remove(oReceiver)
+        Else
+            MsgBox("Empfänger konnte nicht entfernt werden.", MsgBoxStyle.Critical, Text)
+        End If
+
     End Sub
 End Class

EnvelopeGenerator.Form/frmFieldEditor.vb

@@ -1,8 +1,12 @@
-Imports DevExpress.XtraBars
+Imports System.Windows.Forms.VisualStyles.VisualStyleElement.Window
+Imports DevExpress.Utils
+Imports DevExpress.XtraBars
+Imports DevExpress.XtraBars.Ribbon.ViewInfo
 Imports DigitalData.Modules.Logging
 Imports EnvelopeGenerator.Common
 Imports GdPicture14
 Imports GdPicture14.Annotations
+Imports NLog.Fluent
 
 Partial Public Class frmFieldEditor
     Private LogConfig As LogConfig
@@ -63,23 +67,38 @@ Partial Public Class frmFieldEditor
 
     Private Function CreateBarItem(pReceiver As EnvelopeReceiver) As BarItem
         Dim oItem = New BarButtonItem(BarManager1, pReceiver.Name)
-        AddHandler oItem.ItemClick, AddressOf BarItem_Click
+        AddHandler oItem.ItemClick, AddressOf ReceiverItem_Click
         oItem.Tag = pReceiver
         Return oItem
     End Function
 
-    Private Sub BarItem_Click(sender As Object, e As ItemClickEventArgs)
+    Private Sub ReceiverItem_Click(sender As Object, e As ItemClickEventArgs)
-        AddElements()
+        Me.SuspendLayout()
+
+        Dim oReceiver As EnvelopeReceiver = e.Item.Tag
+        Dim oCurrentPage = GDViewer.CurrentPage
+        Dim oCurrentPosition = GDViewer.GetVScrollBarPosition()
+
+        If oReceiver.Id = SelectedReceiver.Id Then
+            Exit Sub
+        End If
+
+        AddElementsToController()
 
         If Controller.SaveElements(SelectedReceiver.Id) Then
-            Dim oReceiver As EnvelopeReceiver = e.Item.Tag
+
             SetReceiver(oReceiver)
             ClearAnnotations()
             LoadAnnotations(oReceiver.Id)
-            GDViewer.DisplayFirstPage()
+            DisplayPage(oCurrentPage)
+            GDViewer.SetVScrollBarPosition(oCurrentPosition)
+            GDViewer.Redraw()
+            TestViewerActionSuccessful("ReceiverItem_Click/Redraw")
         Else
             MsgBox("Elemente konnten nicht gespeichert werden!", MsgBoxStyle.Critical, Text)
         End If
+
+        Me.ResumeLayout()
     End Sub
 
     Private Sub SetReceiver(pReceiver As EnvelopeReceiver)
@@ -87,7 +106,14 @@ Partial Public Class frmFieldEditor
         SelectedReceiver = pReceiver
     End Sub
 
-    Private Sub BarButtonItem1_ItemClick(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles BarButtonItem1.ItemClick
+    Private Sub DisplayPage(pPage As Integer)
+        GDViewer.LockViewer = True
+        GDViewer.DisplayPage(pPage)
+        GDViewer.LockViewer = False
+    End Sub
+
+
+    Private Sub BarButtonItem1_ItemClick(sender As Object, e As ItemClickEventArgs) Handles BarButtonItem1.ItemClick
         If GDViewer IsNot Nothing Then
 
             AddHandler GDViewer.BeforeAnnotationAddedByUser, AddressOf Viewer_BeforeAnnotationAddedByUser
@@ -102,7 +128,7 @@ Partial Public Class frmFieldEditor
     Private Sub Viewer_AnnotationAddedByUser(pAnnotationIdx As Integer)
         Dim oAnnotation = GDViewer.GetAnnotationFromIdx(pAnnotationIdx)
         Dim oPage = GDViewer.CurrentPage
-        Dim oTag = GetAnnotationTag(SelectedReceiver.Id, oPage, pAnnotationIdx)
+        Dim oTag = GetAnnotationTag(SelectedReceiver.Id, oPage, -1)
 
         If TypeOf oAnnotation Is AnnotationStickyNote Then
             Dim oStickyNote As AnnotationStickyNote = oAnnotation
@@ -123,34 +149,67 @@ Partial Public Class frmFieldEditor
         'NOOP
     End Sub
 
-    Private Sub btnSave_ItemClick(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles btnSave.ItemClick
+    Private Sub btnSave_ItemClick(sender As Object, e As ItemClickEventArgs) Handles btnSave.ItemClick
-        'TODO: Save Annotations in Background
+        Dim oCurrentPage = GDViewer.CurrentPage
-        AddElements()
+
+        AddElementsToController()
 
         If Not Controller.SaveElements(SelectedReceiver.Id) Then
             MsgBox("Elemente konnten nicht gespeichert werden!", MsgBoxStyle.Critical, Text)
         End If
 
-        GDViewer.DisplayPage(GDViewer.CurrentPage)
+        UpdateAnnotationTag()
+        DisplayPage(oCurrentPage)
+        GDViewer.Redraw()
+        TestViewerActionSuccessful("btnSave_ItemClick/Redraw")
     End Sub
 
-    Private Sub AddElements()
+    Private Sub AddElementsToController()
         Dim oPageCount = GDViewer.PageCount
 
         For oPage = 1 To oPageCount
             GDViewer.DisplayPage(oPage)
-            Dim oAnnotationCount = GDViewer.GetAnnotationCount()
+            AddElementsToController(oPage)
+        Next
+    End Sub
 
+    Private Sub AddElementsToController(pPage As Integer)
+        Dim oAnnotationCount = GDViewer.GetAnnotationCount()
+
+        For oAnnotationIndex = 0 To oAnnotationCount - 1
+            Dim oAnnotation As Annotation = GDViewer.GetAnnotationFromIdx(oAnnotationIndex)
+            If TypeOf oAnnotation Is AnnotationStickyNote Then
+                Dim oStickyNote As AnnotationStickyNote = oAnnotation
+                Controller.AddOrUpdateElement(oStickyNote)
+            End If
+        Next
+    End Sub
+
+    Private Sub UpdateAnnotationTag()
+
+        Dim oPageCount = GDViewer.PageCount
+
+        For oPage = 1 To oPageCount
+            GDViewer.DisplayPage(oPage)
+
+            Dim oAnnotationCount = GDViewer.GetAnnotationCount()
             For oAnnotationIndex = 0 To oAnnotationCount - 1
                 Dim oAnnotation As Annotation = GDViewer.GetAnnotationFromIdx(oAnnotationIndex)
                 If TypeOf oAnnotation Is AnnotationStickyNote Then
                     Dim oStickyNote As AnnotationStickyNote = oAnnotation
-                    Controller.AddOrUpdateElement(oStickyNote)
+                    Dim oTag = oStickyNote.Tag
+                    Dim oInfo = Controller.GetElementInfo(oTag)
+
+                    If oInfo.Guid = -1 Then
+                        Dim oElement = Controller.GetElement(oStickyNote)
+                        oStickyNote.Tag = GetAnnotationTag(SelectedReceiver.Id, oPage, oElement.Id)
+                    End If
                 End If
             Next
         Next
     End Sub
 
+
     Private Sub ApplyAnnotationStyle(ByRef pAnnotation As Annotation)
         If TypeOf pAnnotation Is AnnotationStickyNote Then
             Dim oStickyNote As AnnotationStickyNote = pAnnotation
@@ -163,21 +222,36 @@ Partial Public Class frmFieldEditor
     End Sub
 
 
-    Private Sub BarButtonItem3_ItemClick_1(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles btnDelete.ItemClick
+    Private Sub btnDelete_ItemClick(sender As Object, e As ItemClickEventArgs) Handles btnDelete.ItemClick
         Dim oSelected = GDViewer.GetSelectedAnnotationIdx()
 
+        If TestViewerActionSuccessful("btnDelete_ItemClick/GetSelectedAnnotationIdx") = False Then
+            Logger.Warn("Selected Annotation could not be fetched!")
+            Exit Sub
+        End If
+
         If oSelected = -1 Then
             Exit Sub
         End If
 
         If MsgBox("Wollen Sie die Annotation löschen?", MsgBoxStyle.YesNo Or MsgBoxStyle.Question, Text) = DialogResult.Yes Then
+            Dim oAnnotation = GDViewer.GetAnnotationFromIdx(oSelected)
+            Dim oElement = Controller.GetElement(oAnnotation)
+
+            ' Delete Element if it was already saved to db
+            If oElement IsNot Nothing Then
+                Controller.DeleteElement(oElement)
+            End If
+
             GDViewer.DeleteAnnotation(oSelected)
+            If TestViewerActionSuccessful("btnDelete_ItemClick/DeleteAnnotation") = False Then
+                Logger.Warn("Annotation could not be deleted!")
+            End If
         End If
     End Sub
 
     Private Sub LoadAnnotation(pElement As EnvelopeDocumentElement, pReceiverId As Integer)
         Dim oAnnotation As AnnotationStickyNote = Manager.AddStickyNoteAnnot(0, 0, 0, 0, "SIGNATUR")
-        Dim oIndex = Manager.GetAnnotationIdx(oAnnotation)
         Dim oPage = pElement.Page
 
         If Manager.GetStat() = GdPictureStatus.OK Then
@@ -188,29 +262,54 @@ Partial Public Class frmFieldEditor
             oAnnotation.Fill = True
             oAnnotation.FillColor = Color.DarkRed
             oAnnotation.Text = "SIGNATUR"
-            oAnnotation.Tag = GetAnnotationTag(pReceiverId, oPage, oIndex)
+            oAnnotation.Tag = GetAnnotationTag(pReceiverId, oPage, pElement.Id)
-
+        Else
-            'If Manager.SaveAnnotationsToPage() = GdPictureStatus.OK Then
+            Dim oStatus = Manager.GetStat()
-            'End If
+            MsgBox(String.Format("GDViewer returned error [{0}] on action [{1}]", oStatus.ToString, "LoadAnnotation"))
+            Logger.Error("GDViewer returned error [{0}] on action [{1}]", oStatus.ToString, "LoadAnnotation")
         End If
     End Sub
 
     Private Sub ClearAnnotations()
         Dim oPageCount = GDViewer.PageCount
+
         For oPage = 1 To oPageCount
-            GDViewer.DisplayPage(oPage)
+            DisplayPage(oPage)
             Dim oAnnotationCount = GDViewer.GetAnnotationCount()
 
             For oAnnotationIndex = 0 To oAnnotationCount - 1
-                GDViewer.DeleteAnnotation(oAnnotationIndex)
+                ' We always delete the first item in the list of annotations,
+                ' because DeleteAnnotation expects and index, not an identifier
+                GDViewer.DeleteAnnotation(0)
+                If TestViewerActionSuccessful("ClearAnnotations") = False Then
+                    Logger.Warn("Annotation could not be cleared!")
+                End If
             Next
         Next
     End Sub
 
+    Private Function TestViewerActionSuccessful(pAction As String) As Boolean
+        Dim oStatus = GDViewer.GetStat()
+        If oStatus = GdPictureStatus.OK Then
+            Return True
+        Else
+            MsgBox(String.Format("GDViewer returned error [{0}] on action [{1}]", oStatus.ToString, pAction))
+            Logger.Error("GDViewer returned error [{0}] on action [{1}]", oStatus.ToString, pAction)
+            Return False
+        End If
+    End Function
+
+
     Private Sub LoadAnnotations(pReceiverId As Integer)
         Dim oPageCount = GDViewer.PageCount
+
         For oPage = 1 To oPageCount
-            GDViewer.DisplayPage(oPage)
+            DisplayPage(oPage)
+
+            If TestViewerActionSuccessful("LoadAnnotations/DisplayPage") = False Then
+                Logger.Warn("Page could not be displayed!")
+            End If
+
             Dim oCurrentPage = oPage
             Dim oElements = Controller.Elements.
                 Where(Function(e) e.Page = oCurrentPage And e.ReceiverId = pReceiverId).
@@ -222,8 +321,8 @@ Partial Public Class frmFieldEditor
         Next
     End Sub
 
-    Private Function GetAnnotationTag(pReceiver As Integer, pPage As Integer, pIndex As Integer) As String
+    Private Function GetAnnotationTag(pReceiver As Integer, pPage As Integer, pGuid As Integer) As String
-        Return $"{pReceiver}|{pPage}|{pIndex}"
+        Return $"{pReceiver}|{pPage}|{pGuid}"
     End Function
 End Class
 

EnvelopeGenerator.Form/frmMain.Designer.vb

@@ -1,9 +1,9 @@
-<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
+<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()>
 Partial Class frmMain
     Inherits DevExpress.XtraBars.Ribbon.RibbonForm
 
     'Form overrides dispose to clean up the component list.
-    <System.Diagnostics.DebuggerNonUserCode()> _
+    <System.Diagnostics.DebuggerNonUserCode()>
     Protected Overrides Sub Dispose(ByVal disposing As Boolean)
         If disposing AndAlso components IsNot Nothing Then
             components.Dispose()
@@ -17,12 +17,14 @@ Partial Class frmMain
     'NOTE: The following procedure is required by the Windows Form Designer
     'It can be modified using the Windows Form Designer.  
     'Do not modify it using the code editor.
-    <System.Diagnostics.DebuggerStepThrough()> _
+    <System.Diagnostics.DebuggerStepThrough()>
     Private Sub InitializeComponent()
         Dim resources As System.ComponentModel.ComponentResourceManager = New System.ComponentModel.ComponentResourceManager(GetType(frmMain))
+        Dim SplashScreenManager1 As DevExpress.XtraSplashScreen.SplashScreenManager = New DevExpress.XtraSplashScreen.SplashScreenManager(Me, Nothing, True, True)
         Me.RibbonControl = New DevExpress.XtraBars.Ribbon.RibbonControl()
         Me.btnCreateEnvelope = New DevExpress.XtraBars.BarButtonItem()
         Me.btnEditEnvelope = New DevExpress.XtraBars.BarButtonItem()
+        Me.btnDeleteEnvelope = New DevExpress.XtraBars.BarButtonItem()
         Me.RibbonPage1 = New DevExpress.XtraBars.Ribbon.RibbonPage()
         Me.RibbonPageGroup1 = New DevExpress.XtraBars.Ribbon.RibbonPageGroup()
         Me.RibbonStatusBar = New DevExpress.XtraBars.Ribbon.RibbonStatusBar()
@@ -36,9 +38,9 @@ Partial Class frmMain
         'RibbonControl
         '
         Me.RibbonControl.ExpandCollapseItem.Id = 0
-        Me.RibbonControl.Items.AddRange(New DevExpress.XtraBars.BarItem() {Me.RibbonControl.ExpandCollapseItem, Me.RibbonControl.SearchEditItem, Me.btnCreateEnvelope, Me.btnEditEnvelope})
+        Me.RibbonControl.Items.AddRange(New DevExpress.XtraBars.BarItem() {Me.RibbonControl.ExpandCollapseItem, Me.RibbonControl.SearchEditItem, Me.btnCreateEnvelope, Me.btnEditEnvelope, Me.btnDeleteEnvelope})
         Me.RibbonControl.Location = New System.Drawing.Point(0, 0)
-        Me.RibbonControl.MaxItemId = 3
+        Me.RibbonControl.MaxItemId = 5
         Me.RibbonControl.Name = "RibbonControl"
         Me.RibbonControl.Pages.AddRange(New DevExpress.XtraBars.Ribbon.RibbonPage() {Me.RibbonPage1})
         Me.RibbonControl.Size = New System.Drawing.Size(1088, 158)
@@ -58,6 +60,13 @@ Partial Class frmMain
         Me.btnEditEnvelope.ImageOptions.SvgImage = CType(resources.GetObject("btnEditEnvelope.ImageOptions.SvgImage"), DevExpress.Utils.Svg.SvgImage)
         Me.btnEditEnvelope.Name = "btnEditEnvelope"
         '
+        'btnDeleteEnvelope
+        '
+        Me.btnDeleteEnvelope.Caption = "Umschlag löschen"
+        Me.btnDeleteEnvelope.Id = 4
+        Me.btnDeleteEnvelope.ImageOptions.SvgImage = CType(resources.GetObject("btnDeleteEnvelope.ImageOptions.SvgImage"), DevExpress.Utils.Svg.SvgImage)
+        Me.btnDeleteEnvelope.Name = "btnDeleteEnvelope"
+        '
         'RibbonPage1
         '
         Me.RibbonPage1.Groups.AddRange(New DevExpress.XtraBars.Ribbon.RibbonPageGroup() {Me.RibbonPageGroup1})
@@ -68,6 +77,7 @@ Partial Class frmMain
         '
         Me.RibbonPageGroup1.ItemLinks.Add(Me.btnCreateEnvelope)
         Me.RibbonPageGroup1.ItemLinks.Add(Me.btnEditEnvelope)
+        Me.RibbonPageGroup1.ItemLinks.Add(Me.btnDeleteEnvelope)
         Me.RibbonPageGroup1.Name = "RibbonPageGroup1"
         Me.RibbonPageGroup1.Text = "RibbonPageGroup1"
         '
@@ -94,6 +104,10 @@ Partial Class frmMain
         Me.ViewEnvelopes.GridControl = Me.GridEnvelopes
         Me.ViewEnvelopes.Name = "ViewEnvelopes"
         '
+        'SplashScreenManager1
+        '
+        SplashScreenManager1.ClosingDelay = 500
+        '
         'frmMain
         '
         Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
@@ -122,4 +136,5 @@ Partial Class frmMain
     Friend WithEvents GridEnvelopes As DevExpress.XtraGrid.GridControl
     Friend WithEvents ViewEnvelopes As DevExpress.XtraGrid.Views.Grid.GridView
     Friend WithEvents btnEditEnvelope As DevExpress.XtraBars.BarButtonItem
+    Friend WithEvents btnDeleteEnvelope As DevExpress.XtraBars.BarButtonItem
 End Class

EnvelopeGenerator.Form/frmMain.resx

@@ -153,6 +153,25 @@
         LDRMNCwxMnYxNWMwLDAuNSwwLjUsMSwxLDFoMjJjMC41LDAsMS0wLjUsMS0xVjEyTDE2LDR6IE0yNiwx
         My4xbC0xMCw2LjdMNiwxMy4xdjBsMTAtNi43TDI2LDEzLjEgICBMMjYsMTMuMXoiIGNsYXNzPSJZZWxs
         b3ciIC8+DQogIDwvZz4NCjwvc3ZnPgs=
+</value>
+  </data>
+  <data name="btnDeleteEnvelope.ImageOptions.SvgImage" type="DevExpress.Utils.Svg.SvgImage, DevExpress.Data.v21.2" mimetype="application/x-microsoft.net.object.bytearray.base64">
+    <value>
+        AAEAAAD/////AQAAAAAAAAAMAgAAAFlEZXZFeHByZXNzLkRhdGEudjIxLjIsIFZlcnNpb249MjEuMi40
+        LjAsIEN1bHR1cmU9bmV1dHJhbCwgUHVibGljS2V5VG9rZW49Yjg4ZDE3NTRkNzAwZTQ5YQUBAAAAHURl
+        dkV4cHJlc3MuVXRpbHMuU3ZnLlN2Z0ltYWdlAQAAAAREYXRhBwICAAAACQMAAAAPAwAAAKoCAAAC77u/
+        PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0nVVRGLTgnPz4NCjxzdmcgeD0iMHB4IiB5PSIwcHgi
+        IHZpZXdCb3g9IjAgMCAzMiAzMiIgdmVyc2lvbj0iMS4xIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcv
+        MjAwMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rIiB4bWw6c3Bh
+        Y2U9InByZXNlcnZlIiBpZD0iTGF5ZXJfMSIgc3R5bGU9ImVuYWJsZS1iYWNrZ3JvdW5kOm5ldyAwIDAg
+        MzIgMzIiPg0KICA8c3R5bGUgdHlwZT0idGV4dC9jc3MiPgoJLkJsdWV7ZmlsbDojMTE3N0Q3O30KCS5Z
+        ZWxsb3d7ZmlsbDojRkZCMTE1O30KCS5CbGFja3tmaWxsOiM3MjcyNzI7fQoJLkdyZWVue2ZpbGw6IzAz
+        OUMyMzt9CgkuUmVke2ZpbGw6I0QxMUMxQzt9Cgkuc3Qwe29wYWNpdHk6MC43NTt9Cgkuc3Qxe29wYWNp
+        dHk6MC41O30KPC9zdHlsZT4NCiAgPGcgaWQ9IlRyYXNoIj4NCiAgICA8cGF0aCBkPSJNOCwyN2MwLDAu
+        NSwwLjUsMSwxLDFoMTRjMC41LDAsMS0wLjUsMS0xVjEySDhWMjd6IiBjbGFzcz0iQmxhY2siIC8+DQog
+        ICAgPHBhdGggZD0iTTI1LDZoLTdWNWMwLTAuNS0wLjUtMS0xLTFoLTJjLTAuNSwwLTEsMC41LTEsMXYx
+        SDdDNi41LDYsNiw2LjUsNiw3djNoMjBWN0MyNiw2LjUsMjUuNSw2LDI1LDZ6IiBjbGFzcz0iQmxhY2si
+        IC8+DQogIDwvZz4NCjwvc3ZnPgs=
 </value>
   </data>
 </root>

EnvelopeGenerator.Form/frmMain.vb

@@ -5,6 +5,7 @@ Imports DigitalData.Modules.Logging
 Imports DigitalData.Modules.Base
 Imports DigitalData.GUIs.Common
 Imports EnvelopeGenerator.Common
+Imports DevExpress.XtraSplashScreen
 
 Public Class frmMain
     Private LogConfig As LogConfig
@@ -74,8 +75,16 @@ Public Class frmMain
     End Function
 
     Private Sub btnCreateEnvelope_ItemClick(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles btnCreateEnvelope.ItemClick
-        Dim oForm As New frmEnvelopeEditor() With {.State = State}
+        Dim oHandle = SplashScreenManager.ShowOverlayForm(Me)
-        oForm.ShowDialog()
+        Try
+            Dim oForm As New frmEnvelopeEditor() With {.State = State}
+            oForm.ShowDialog()
+            GridEnvelopes.DataSource = Controller.ListEnvelopes()
+        Catch ex As Exception
+            Logger.Error(ex)
+        Finally
+            SplashScreenManager.CloseOverlayForm(oHandle)
+        End Try
     End Sub
 
     Private Sub btnEditEnvelope_ItemClick(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles btnEditEnvelope.ItemClick
@@ -92,6 +101,20 @@ Public Class frmMain
         GridEnvelopes.DataSource = Controller.ListEnvelopes()
     End Sub
 
+    Private Sub DeleteEnvelope(pRowHandle As Integer)
+        Dim oEnvelope As Envelope = ViewEnvelopes.GetRow(pRowHandle)
+
+        If MsgBox("Wollen Sie diesen Umschlag wirklich löschen?", MsgBoxStyle.Question Or MsgBoxStyle.YesNo, Text) = MsgBoxResult.No Then
+            Exit Sub
+        End If
+
+        If Controller.DeleteEnvelope(oEnvelope) Then
+            GridEnvelopes.DataSource = Controller.ListEnvelopes()
+        Else
+            MsgBox("Umschlag konnte nicht gelöscht werden!", MsgBoxStyle.Critical, Text)
+        End If
+    End Sub
+
     Private Sub ViewEnvelopes_DoubleClick(sender As Object, e As EventArgs) Handles ViewEnvelopes.DoubleClick
         Dim oSelectedRows = ViewEnvelopes.GetSelectedRows()
         If oSelectedRows.Count > 0 Then
@@ -99,4 +122,10 @@ Public Class frmMain
         End If
     End Sub
 
+    Private Sub btnDeleteEnvelope_ItemClick_1(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles btnDeleteEnvelope.ItemClick
+        Dim oSelectedRows = ViewEnvelopes.GetSelectedRows()
+        If oSelectedRows.Count > 0 Then
+            DeleteEnvelope(oSelectedRows.First)
+        End If
+    End Sub
 End Class