Backspace key

[Natalija Ilic]

I have AutoComplete comboBox inside GridGrouping Control. When the cursor is inside the field it seems that Backspace and Delete doesn't work like with other text fields.
Do I need to override TableControlCurrentCellKeyDown event for Backspace and Delete keys? Do you have any examples?


Thanks a lot.

[haneefm]

Hi Natalia,

This can achieved by handling the CurrentCellKeyDown event and accordingly the Delete key is processed for the combobox cell to resolve this issue. The following is the code snippet.

private void gridTableControlCurrentCellKeyDown(object sender,GridTableControlKeyEventArgs e)
{
GridCurrentCell cc =e.TableControl.CurrentCell;
if(cc.Renderer.StyleInfo.CellType == GridCellTypeName.ComboBox )
{
if(e.KeyCode == Keys.Delete || e.KeyCode == Keys.Back)
{
e.Inner.Handled = true;
GridDropDownEditPartControl editControl = cc.Renderer.Control as GridDropDownEditPartControl;
int len = ( editControl.SelectionLength > 0 )? editControl.SelectionLength : 1;
int start = editControl.SelectionStart;
if( ( editControl.SelectionStart + len ) <= editControl.Text.Length)
cc.Renderer.ControlText = cc.Renderer.ControlText.Remove( editControl.SelectionStart,len);
editControl.SelectionStart = start;
}
}
}

Also refer this forum thread for more details.
http://www.syncfusion.com/Support/Forums/message.aspx?&MessageID=26118

Best Regards,
Haneef