Increment an Editor Using Custom Input

The WinEditorMaskedControlBase is able to increment/decrement its value on the up/down arrow key input. In order to allow this functionality for other forms of input, we can use the PerformAction() method to perform the appropriate up or down arrow key action.

Note that the editor must be in edit mode in order to spin, and if a spin is attempted while out of edit mode an InvalidOperationException is thrown. This scenario can be defended against by checking the editor’s Focused property.

The following code demonstrates a MouseWheel event handler causing the editor to increment/decrement according to the mouse wheel input.

In C#

private void MouseWheelIncrement(object sender, MouseEventArgs e)
{
    var editor = (UltraWinEditorMaskedControlBase)sender;

    // ignore if editor is not in edit mode
    if (!editor.Focused)
        return;

    MaskedEditAction action;
    bool positiveRoll = e.Delta > 0;
    if (positiveRoll)
        action = MaskedEditAction.UpKeyAction;
    else
        action = MaskedEditAction.DownKeyAction;

    editor.PerformAction(action, false, false);
}

In VB

Private Sub MouseWheelIncrement(sender As Object, e As MouseEventArgs)
	Dim editor = DirectCast(sender, UltraWinEditorMaskedControlBase)

	' ignore if editor is not in edit mode
	If Not editor.Focused Then
		Return
	End If

	Dim action As MaskedEditAction
	Dim positiveRoll As Boolean = e.Delta > 0
	If positiveRoll Then
		action = MaskedEditAction.UpKeyAction
	Else
		action = MaskedEditAction.DownKeyAction
	End If

	editor.PerformAction(action, False, False)
End Sub

Windows Forms | Help Topics

Increment an Editor Using Custom Input