DataGridView.OnCellErrorTextNeeded Method (DataGridViewCellErrorTextNeededEventArgs)


Raises the CellErrorTextNeeded event.

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

protected virtual void OnCellErrorTextNeeded(
	DataGridViewCellErrorTextNeededEventArgs e

Exception Condition

The value of the ColumnIndex property of e is greater than the number of columns in the control minus one.


The value of the RowIndex property of e is greater than the number of rows in the control minus one.

Raising an event invokes the event handler through a delegate. For more information, see NIB: Raising an Event.

The OnCellErrorTextNeeded method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors:

When overriding OnCellErrorTextNeeded in a derived class, be sure to call the base class’s OnCellErrorTextNeeded method so that registered delegates receive the event.

.NET Framework
Available since 2.0
Return to top