Common: Improve BaseForms and ErrorHandler

GUIs.Common/Base/BaseErrorHandler.vb

@@ -14,9 +14,14 @@ Namespace Base
             _Form = Form
         End Sub
 
-        Public Sub ShowErrorMessage(Exception As Exception)
+        Public Sub ShowErrorMessage(Exception As Exception, Origin As String)
+            Dim oMessage = GetMessage(Exception, Origin)
+            ShowErrorMessage(Exception, Origin, oMessage)
+        End Sub
+
+        Public Sub ShowErrorMessage(Exception As Exception, Origin As String, Message As String)
             _Logger.Error(Exception)
-            MessageBox.Show(GetMessage(Exception), _Form.Text, MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
+            MessageBox.Show(Message, _Form.Text, MessageBoxButtons.OK, MessageBoxIcon.Error)
         End Sub
 
         Public Sub ShowInfoMessage(Text As String)
@@ -24,8 +29,7 @@ Namespace Base
             MessageBox.Show(Text, _Form.Text, MessageBoxButtons.OK, MessageBoxIcon.Information)
         End Sub
 
-        Private Function GetMessage(Exception As Exception) As String
-            Dim oCallingClass = LogConfig.GetClassFullName(IncludeMethodNames:=True, Parts:=2)
+        Private Function GetMessage(Exception As Exception, Origin As String) As String
             Dim oMessage As String = String.Empty
 
             If TypeOf Exception Is SqlClient.SqlException Then
@@ -37,13 +41,13 @@ Namespace Base
             ElseIf TypeOf Exception Is NoNullAllowedException Then
                 oMessage = "Einige benötigte Felder wurde nicht ausgefüllt."
             Else
-                oMessage = $"Es ist ein unerwarteter Fehler in {oCallingClass} aufgetreten. Mehr Informationen finden Sie im Log."
+                oMessage = $"An unhandled exception occurred in {Origin}: " & vbNewLine &
+                    Exception.Message & vbNewLine & vbNewLine &
+                    "More information can be found in the Application Log."
             End If
 
             If _LogConfig.Debug Then
-                oMessage &= vbNewLine & vbNewLine & "== Debug Informationen =="
-                oMessage &= vbNewLine & vbNewLine & "Die ursprüngliche Fehlermeldung lautet:"
-                oMessage &= vbNewLine & Exception.Message
+                oMessage &= vbNewLine & vbNewLine & "=== Debug Information ==="
                 oMessage &= vbNewLine & vbNewLine & "Stacktrace:"
                 oMessage &= vbNewLine & Exception.StackTrace
             End If

GUIs.Common/Base/BaseForm.vb

@@ -0,0 +1,51 @@
+
+Imports DevExpress.XtraEditors
+Imports DigitalData.Modules.Logging
+
+Namespace Base
+    Public Class BaseForm
+        Inherits XtraForm
+
+        Private ReadOnly _Logger As Logger
+        Private ReadOnly _ErrorHandler As BaseErrorHandler
+
+        Protected ReadOnly Property Logger As Logger
+            Get
+                Return _Logger
+            End Get
+        End Property
+
+        Public Sub New()
+        End Sub
+
+        Public Sub New(LogConfig As LogConfig)
+            ' Get the full name of the inheriting form
+            ' so the log messages have the right classname
+            Dim oClassName = [GetType]().FullName
+
+            ' My.LogConfig is undefined in the designer
+            _Logger = LogConfig.GetLogger(oClassName)
+            _ErrorHandler = New BaseErrorHandler(LogConfig, _Logger, Me)
+
+            ' When you add something, be careful if it 
+            ' depends on a global var like My.LogConfig
+            ' you might need to check for its existence with ?
+        End Sub
+
+        ''' ============== PUBLIC METHODS ==============
+        Public Sub ShowInfoMessage(Message As String)
+            _ErrorHandler.ShowInfoMessage(Message)
+        End Sub
+
+        Public Sub ShowErrorMessage(Exception As Exception)
+            Dim oCallingClass = LogConfig.GetClassFullName(IncludeMethodNames:=True, Parts:=2)
+            _ErrorHandler.ShowErrorMessage(Exception, oCallingClass)
+        End Sub
+
+        Public Sub ShowErrorMessage(ErrorMessage As String)
+            Dim oCallingClass = LogConfig.GetClassFullName(IncludeMethodNames:=True, Parts:=2)
+            _ErrorHandler.ShowErrorMessage(New ApplicationException(ErrorMessage), oCallingClass)
+        End Sub
+    End Class
+End Namespace
+

GUIs.Common/Base/BaseRibbonForm.vb

@@ -5,14 +5,16 @@ Imports DigitalData.Modules.Logging
 Namespace Base
     ''' <summary>
     ''' This BaseClass is used to provide common functionality like the Logger or ErrorHandler to all Forms
-    ''' To use it, create a form and change the `Inherits` statement in FormName.Designer.vb to this form, eg.:
+    ''' </summary>
+    ''' <example>
+    ''' To use it, create a form and change the `Inherits` statement in FormName.Designer.vb to this form.
     ''' 
     ''' Partial Class frmExample
     '''     Inherits BaseRibbonForm
     '''     
     '''     ... 
     ''' End Class
-    ''' </summary>
+    ''' </example>
     Public Class BaseRibbonForm
         Inherits RibbonForm
 
@@ -43,13 +45,18 @@ Namespace Base
         End Sub
 
         ''' ============== PUBLIC METHODS ==============
+        Public Sub ShowInfoMessage(Message As String)
+            _ErrorHandler.ShowInfoMessage(Message)
+        End Sub
 
         Public Sub ShowErrorMessage(Exception As Exception)
-            _ErrorHandler.ShowErrorMessage(Exception)
+            Dim oCallingClass = LogConfig.GetClassFullName(IncludeMethodNames:=True, Parts:=2)
+            _ErrorHandler.ShowErrorMessage(Exception, oCallingClass)
         End Sub
 
         Public Sub ShowErrorMessage(ErrorMessage As String)
-            _ErrorHandler.ShowErrorMessage(New ApplicationException(ErrorMessage))
+            Dim oCallingClass = LogConfig.GetClassFullName(IncludeMethodNames:=True, Parts:=2)
+            _ErrorHandler.ShowErrorMessage(New ApplicationException(ErrorMessage), oCallingClass)
         End Sub
     End Class
 End Namespace

GUIs.Common/Common.vbproj

@@ -89,6 +89,9 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Base\BaseErrorHandler.vb" />
+    <Compile Include="Base\BaseForm.vb">
+      <SubType>Form</SubType>
+    </Compile>
     <Compile Include="Base\BaseResult.vb" />
     <Compile Include="Base\BaseRibbonForm.vb">
       <SubType>Form</SubType>