DataGridView.ProcessDialogKey Method

Note: This method is new in the .NET Framework version 2.0.

Processes keys, such as the TAB, ESCAPE, RETURN, and ARROW keys, used to control dialog boxes.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in

protected override bool ProcessDialogKey (
	Keys keyData
protected boolean ProcessDialogKey (
	Keys keyData
protected override function ProcessDialogKey (
	keyData : Keys
) : boolean



A bitwise combination of Keys values that represents the key or keys to process.

Return Value

true if the key was processed; otherwise, false.

Exception typeCondition


The key pressed would cause the control to enter edit mode, but the EditType property of the current cell does not indicate a class that derives from Control and implements IDataGridViewEditingControl.


This action would commit a cell value or enter edit mode, but an error in the data source prevents the action and either there is no handler for the DataError event or the handler has set the DataGridViewDataErrorEventArgs.ThrowException property to true.

If a key press is determined to not be an input key, it will be sent to the dialog box by this method.

Notes to Inheritors When overriding this method, a control should return true to indicate that it has processed the key. For keys that are not processed by the control, return the result of the base version of this method.

  • UIPermission  for using all windows and user events. Demand value: LinkDemand. Permission value: AllWindows
  • UIPermission  for using all windows and user events when the TAB key is pressed. Demand value: Demand. Permission value: AllWindows

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0