DataGridView.OnMouseLeave(EventArgs) Method
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Raises the MouseLeave event.
protected:
override void OnMouseLeave(EventArgs ^ e);
protected override void OnMouseLeave (EventArgs e);
override this.OnMouseLeave : EventArgs -> unit
Protected Overrides Sub OnMouseLeave (e As EventArgs)
The following code example illustrates the use of this method. This example is part of a larger example available in How to: Customize Cells and Columns in the Windows Forms DataGridView Control by Extending Their Behavior and Appearance.
// Force the cell to repaint itself when the mouse pointer enters it.
protected override void OnMouseEnter(int rowIndex)
{
this.DataGridView.InvalidateCell(this);
}
// Force the cell to repaint itself when the mouse pointer leaves it.
protected override void OnMouseLeave(int rowIndex)
{
this.DataGridView.InvalidateCell(this);
}
' Force the cell to repaint itself when the mouse pointer enters it.
Protected Overrides Sub OnMouseEnter(ByVal rowIndex As Integer)
Me.DataGridView.InvalidateCell(Me)
End Sub
' Force the cell to repaint itself when the mouse pointer leaves it.
Protected Overrides Sub OnMouseLeave(ByVal rowIndex As Integer)
Me.DataGridView.InvalidateCell(Me)
End Sub
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnMouseLeave 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.
When overriding OnMouseLeave(EventArgs) in a derived class, be sure to call the base class's OnMouseLeave(EventArgs) method so that registered delegates receive the event.
Product | Versions |
---|---|
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9 |
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