LookupGrid: Update Datasource when new value is added

Controls.LookupGrid/LookupControl3.vb

@@ -229,6 +229,16 @@ Public Class RepositoryItemLookupControl3
                 If oResult = Windows.Forms.DialogResult.OK Then
                     Dim oValues = oForm.SelectedValues
                     UpdateSelectedValues(oValues)
+
+                    If oForm.NewValues.Count > 0 AndAlso TypeOf DataSource Is DataTable Then
+                        Dim oTable As DataTable = DirectCast(DataSource, DataTable)
+
+                        For Each oValue In oForm.NewValues
+                            Dim oRow = oTable.NewRow()
+                            oRow.Item(0) = oValue
+                            oTable.Rows.Add(oRow)
+                        Next
+                    End If
                 End If
             End Using
         End If

Controls.LookupGrid/frmLookupGrid.vb

@@ -9,6 +9,9 @@ Public Class frmLookupGrid
     Public Property PreventDuplicates As Boolean
     Public Property DataSource As DataTable
     Public Property SelectedValues As List(Of String)
+    Public Property NewValues As New HashSet(Of String)
+
+    Public Const COLUMN_SELECTED = "SELECTED"
 
     Private _DataColumn As Integer
     Private _DataSourceTemp As DataTable
@@ -29,7 +32,7 @@ Public Class frmLookupGrid
         End If
 
         If MultiSelect Then
-            If Not _DataSourceTemp.Columns.Contains("SELECTED") Then
+            If Not _DataSourceTemp.Columns.Contains(COLUMN_SELECTED) Then
                 Dim selectedColumn = New DataColumn() With {
                     .ColumnName = "SELECTED",
                     .DataType = GetType(Boolean),
@@ -96,7 +99,7 @@ Public Class frmLookupGrid
             For oIndex = 0 To viewLookup.DataRowCount - 1
                 Dim oRow As DataRow = _View.GetDataRow(oIndex)
                 Dim oSelected As Boolean = oRow.Item(0)
-                Dim oValue As Object = oRow.Item(1)
+                Dim oValue As Object = GetValueFromRow(oRow)
 
                 If oSelected Then
                     oValues.Add(oValue)
@@ -115,7 +118,7 @@ Public Class frmLookupGrid
             Dim oValues As New List(Of String)
 
             If oRow IsNot Nothing Then
-                Dim oValue = oRow.Item(0)
+                Dim oValue = GetValueFromRow(oRow)
                 oValues.Add(oValue)
             End If
 
@@ -123,6 +126,13 @@ Public Class frmLookupGrid
         End If
     End Sub
 
+    Private Function GetValueFromRow(pRow As DataRow) As String
+        If MultiSelect Then
+            Return pRow.Item(1)
+        Else
+            Return pRow.Item(0)
+        End If
+    End Function
 
     Private Sub SyncItemsWithView(view As GridView)
         ' Wenn Vorbelegungen existieren, werden diese angehakt
@@ -145,8 +155,6 @@ Public Class frmLookupGrid
                         End If
                     End If
                 End If
-
-
             Next
         End If
     End Sub
@@ -235,9 +243,15 @@ Public Class frmLookupGrid
     End Sub
 
     Private Sub viewLookup_ValidateRow(sender As Object, e As ValidateRowEventArgs) Handles viewLookup.ValidateRow
-        If MultiSelect And e.RowHandle = GridControl.NewItemRowHandle Then
-            Dim oRow As DataRowView = viewLookup.GetRow(e.RowHandle)
-            oRow.Row.Item("SELECTED") = True
+        If e.RowHandle = GridControl.NewItemRowHandle Then
+            Dim oRowView As DataRowView = viewLookup.GetRow(e.RowHandle)
+            Dim oValue = GetValueFromRow(oRowView.Row)
+            NewValues.Add(oValue)
+
+            ' Automatically select newly added row when MultiSelect is enabled
+            If MultiSelect Then
+                oRowView.Row.Item(COLUMN_SELECTED) = True
+            End If
         End If
     End Sub
 End Class