Detecting column reorder with Visual Basic

[David]

Hello,

I'm trying to figure out how to use the Telerik.WinControls.Data.ObservableCollection.CollectionChanging event to detect when a user moves columns in the grid.  How can you do this in Visual Basic.NET?  I need to do this so I can detect if we need to save the layout for that user to the database or not.

Kind regards,

David

[Stefan]

Hi David,

Thank you for writing.

Here is how to subscribe to the event:

AddHandler radGridView1.Columns.CollectionChanged, AddressOf radGridView1_CollectionChanged

and here is how to identify the move operation:

Private Sub radGridView1_CollectionChanged(sender As Object, e As Telerik.WinControls.Data.NotifyCollectionChangedEventArgs)
    If e.Action = Telerik.WinControls.Data.NotifyCollectionChangedAction.Move Then
        'a column has been moved from  e.OldStartingIndex to  e.NewStartingIndex. The column can be accessed in e.NewItems(0)
    End If
End Sub

I hope that you find this information useful. Should you have any other questions, do not hesitate to contact us.

Regards,
Stefan
Telerik