jj: clear form designer propertygrid on form closing

app/DD_PM_WINDREAM/frmFormDesigner.vb

@@ -1,4 +1,5 @@
-Imports DD_LIB_Standards
+Imports System.ComponentModel
+Imports DD_LIB_Standards
 
 Public Class frmFormDesigner
     Public ProfileId As Integer
@@ -92,6 +93,9 @@ Public Class frmFormDesigner
 
         ' Setzt den typ des SQL-Befehls für frmSQL_DESIGNER
         CURRENT_DESIGN_TYPE = "FINAL_INDEX"
+
+        ' Beim Schließen das PropertyGrid leeren
+        pgControls.SelectedObject = Nothing
     End Sub
 
     ''' <summary>