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ToolStripButton.CheckedChanged Event

Occurs when the value of the Checked property changes.

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

public event EventHandler CheckedChanged

For more information about handling events, see Consuming Events.

The following code example sets the CheckOnClick property to true and uses the Checked property in a CheckedChanged event to change the font of the button text to bold when the button is clicked.

		internal ToolStripButton boldButton;

		private void InitializeBoldButton()
			boldButton = new ToolStripButton();
			boldButton.Text = "B";
			boldButton.CheckOnClick = true;


		private void boldButton_CheckedChanged(object sender, EventArgs e)
			if (boldButton.Checked)
				this.Font = new Font(this.Font, FontStyle.Bold);
				this.Font = new Font(this.Font, FontStyle.Regular);


.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.