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Invalidate Method
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ToolStripItem.Invalidate Method

Invalidates the entire surface of the ToolStripItem and causes it to be redrawn.

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

public void Invalidate()

The following code example demonstrates how to use the Invalidate method for custom rendering. This code example is part of a larger example provided for the ToolStripItem class.


// This method defines the behavior of the MouseEnter event.
// It sets the state of the rolloverValue field to true and
// tells the control to repaint.
protected override void OnMouseEnter(EventArgs e)
{
    base.OnMouseEnter(e);

    this.rolloverValue = true;

    this.Invalidate();
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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