remove multiple rows in a batch

[Technik]

Hi,
i want to remove a batch of rows with a single confirmation dialog. Currently im using the RowsChaning event, but this fires for every deleted row, so the confirmation dialog pops up every time.

Is it possible to do a batch remove with a single dialog?

Winforms Q3 2009
Grid settings: MultipleSelect=true
Event used currently: RowsChaning
Datasource = bindinglist(of ...)

Here is my code:
----------------------

 

Private



Sub gvMails_RowsChanging(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.GridViewCollectionChangingEventArgs) Handles gvMails.RowsChanging






If



e.Action = Telerik.WinControls.Data.NotifyCollectionChangedAction.Remove Then






If gvMails.SelectedRows.Count = 1 Then




e.Cancel =

Not DeleteMessageBox(gvMails.SelectedRows(0).DataBoundItem)






Else




e.Cancel =

Not DeleteMessageBox()






End If






End If












End Sub




Private



Function DeleteMessageBox() As Boolean






If MsgBox("Delete all?", MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then



    For



Each itm In gvMails.SelectedRows






        ' delete single msg
    Next
    return True





End If






Return False



End



Function













Private





Function DeleteMessageBox(ByVal msg As Message) As Boolean






If MsgBox("Delete single """ & msg.Subject & """?", MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then




 ' delete single msg
    return True

End If






Return False






End Function

 

 

 

 

 

 

 

 

 

Greetings Falk

[Martin Vasilev]

Hi Falk Wegener,

Thank you for writing. You can use custom grid behavior and override ProcessDeleteKey to include confirmation dialog. Please, consider the following code:

this.radGridView1.GridBehavior = new CustomGridBehavior();

public class CustomGridBehavior : BaseGridBehavior
{

    protected override bool ProcessDeleteKey(KeyEventArgs keys)
    {
            DialogResult dr = MessageBox.Show("Selected row(s) will be deleted! Are you sure?", "Delete", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
            if (dr == DialogResult.Yes)
            {
                return base.ProcessDeleteKey(keys);
            }
        return true;
    }
}

I hope this helps. Do not hesitate to contact me again if you have any other questions.

All the best,
Martin Vasilev
the Telerik team

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[Technik]

Hi Martin,
it works like a charm. Thank you.

Greetings
Falk