DataGridView.OnCellValueNeeded(DataGridViewCellValueEventArgs) Method

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Source:: DataGridView.Methods.cs

Source:: DataGridView.Methods.cs

Source:: DataGridView.Methods.cs

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 -> unit

Protected Overridable Sub OnCellValueNeeded (e As DataGridViewCellValueEventArgs)

Parameters

e: DataGridViewCellValueEventArgs

A DataGridViewCellValueEventArgs that contains the event data.

Exceptions

ArgumentOutOfRangeException

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.

Applies to

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