BusyIndicator with uncommited new row in Datagrid throws exception

[xceedsoftware]

Abhijeet_Bhamare[CodePlex]
Hi,
In my View
I have a datagrid and a 'Undo' button. On 'Undo' I am showing a BusyIndicator.
Suppose,

1. I try to add a new row in the datagrid
2. Datagrid row goes into the error state because of some validation failure
3. While datagrid is in edit mode, without loosing focus on the datagrid, I presses a shortcut 'Ctrl+Z' to Undo changes
   nbsp
   Following exception occurs:-
   System.Windows.Media.Animation.AnimationException: Cannot animate the 'IsEnabled' property on a 'System.Windows.Controls.ContentControl' using a 'System.Windows.Media.Animation.ObjectAnimationUsingKeyFrames'. For details see the inner exception. ---gt System.InvalidOperationException:
   'NewItemPlaceholderPosition' is not allowed during a transaction begun by 'AddNew'.
   nbsp
   Actually on DataGrid LostkeyboardFocus i explicitly CommitEdit and CommitNew for the datagrid. So, if I press the 'Undo' button with mouse everything works fine.
   nbsp
   But if I presses a shortcut while datagrid is in edit mode and focus is still in the datagrid, then the BusyIndicator tries to change IsEnabled of the datagrid and the exception occurs.
   nbsp
   Please help me if anyone has a solution

[xceedsoftware]

BoucherS[CodePlex]
Hi,

Can you submit a sample of the bug ? Does it happens only with a DataGrid and a BusyIndicator ? Are you using the Xceed WPF DataGrid or the Microsoft DataGrid ?

[xceedsoftware]

edmolko[CodePlex]
Hi,

Can you please show me your code for the CommitUIChanges method then?

Thanks in advance

[xceedsoftware]

edmolko[CodePlex]
Hi,

Can you please show me the code for CommitUIChanges then?

Thanks in advance

[xceedsoftware]

Abhijeet_Bhamare[CodePlex]
The only solution I found is to explicitly call DATAGRID.CommitEdit() if the bounded collectionView of the datagrid is EditingItem or AddingNewItem. And then do the Undo work.

To do this thru ViewModel- In the Undo functionality on first line I raised an event 'CommitUIChanges()'. This event is handled by the View. View will check if the current keyboard focus is inside the DataGrid and if the datagrid is Editing or Adding then call
DATAGRID.CommitEdit().

Let me know if you need code for CommitUIChanges

[xceedsoftware]

edmolko[CodePlex]
I'm experiencing the same symptoms. Any solution so far?