How to skip deleting the cell text of an exclusive ComboBox cell in WinForms GridControl?
Skip the deleting cell in grid
When you set the ComboBox in a WinForms GridControl and assign the dropdown style as exclusive, the cell text is removed from the ComboBox cell while pressing delete key or backspace key.
Solution
To overcome this problem, you can use the CurrentCellKeyDown event to handle the Delete & BackSpace keys.
C#
// On Form load
this.gridControl1.CurrentCellKeyDown += new KeyEventHandler(gridControl1_CurrentCellKeyDown);
void gridControl1_CurrentCellKeyDown(object sender, KeyEventArgs e)
{
GridCurrentCell cc = this.gridControl1.CurrentCell;
if (cc.Renderer.StyleInfo.CellType == "ComboBox" && cc.Renderer.StyleInfo.DropDownStyle == GridDropDownStyle.Exclusive)
{
// Pressing delete key or backspacekey
if (e.KeyCode == Keys.Back || e.KeyCode == Keys.Delete)
{
// not remove the cell content
e.Handled = true;
}
}
}
VB
‘On Form load AddHandler gridControl1.CurrentCellKeyDown, AddressOf gridControl1_CurrentCellKeyDown ' to perform action while pressing key Private Sub gridControl1_CurrentCellKeyDown(ByVal sender As Object, ByVal e As KeyEventArgs) Dim cc As GridCurrentCell = Me.gridControl1.CurrentCell If cc.Renderer.StyleInfo.CellType Is "ComboBox" AndAlso cc.Renderer.StyleInfo.DropDownStyle = GridDropDownStyle.Exclusive Then ' Pressing delete key or backspacekey If e.KeyCode = Keys.Back OrElse e.KeyCode = Keys.Delete Then ' not remove the cell content e.Handled = True End If End If End Sub
Samples:
C#: DropdownStyle.Exclusive_C#.zip
VB: DropdownStyle.Exclusive_VB.zip
I hope you enjoyed learning about how to skip deleting the cell text of an exclusive ComboBox cell in WinForms GridControl.
You can refer to our WinForms GridControl’s feature tour page to know about its other groundbreaking feature representations. You can also explore our WinForms GridControl documentation to understand how to present and manipulate data.
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