DataGridView.OnCellValueNeeded(DataGridViewCellValueEventArgs) Method
Definition
Important
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Raises the CellValueNeeded event.
protected:
virtual void OnCellValueNeeded(System::Windows::Forms::DataGridViewCellValueEventArgs ^ e);protected virtual void OnCellValueNeeded (System.Windows.Forms.DataGridViewCellValueEventArgs e);abstract member OnCellValueNeeded : System.Windows.Forms.DataGridViewCellValueEventArgs -> unit
override this.OnCellValueNeeded : System.Windows.Forms.DataGridViewCellValueEventArgs -> unitProtected Overridable Sub OnCellValueNeeded (e As DataGridViewCellValueEventArgs)Parameters
A DataGridViewCellValueEventArgs that contains the event data.
Exceptions
The value of the ColumnIndex property of e is less than zero or greater than the number of columns in the control minus one.
-or-
The value of the RowIndex property of e is less than zero or greater than the number of rows in the control minus one.
Remarks
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnCellValueNeeded 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 OnCellValueNeeded(DataGridViewCellValueEventArgs) in a derived class, be sure to call the base class's OnCellValueNeeded(DataGridViewCellValueEventArgs) method so that registered delegates receive the event.
