ToolStripMenuItem.CheckStateChanged Event


Occurs when the value of the CheckState property changes.

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

Public Event CheckStateChanged As EventHandler

For more information about handling events, see Handling and Raising Events.

The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the CheckStateChanged event. This report helps you to learn when the event occurs and can assist you in debugging. To report on multiple events or on events that occur frequently, consider replacing MessageBox.Show with Console.WriteLine or appending the message to a multiline TextBox.

To run the example code, paste it into a project that contains an instance of type ToolStripMenuItem named ToolStripMenuItem1. Then ensure that the event handler is associated with the CheckStateChanged event.

Private Sub ToolStripMenuItem1_CheckStateChanged(sender as Object, e as EventArgs) _ 
     Handles ToolStripMenuItem1.CheckStateChanged

   MessageBox.Show("You are in the ToolStripMenuItem.CheckStateChanged event.")

End Sub

.NET Framework
Available since 2.0
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