ToolStripMenuItem.CheckStateChanged Event
Definition
Important
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Occurs when the value of the CheckState property changes.
public:
event EventHandler ^ CheckStateChanged;public event EventHandler CheckStateChanged;public event EventHandler? CheckStateChanged;member this.CheckStateChanged : EventHandler Public Custom Event CheckStateChanged As EventHandler Event Type
Examples
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 void ToolStripMenuItem1_CheckStateChanged(Object sender, EventArgs e) {
MessageBox.Show("You are in the ToolStripMenuItem.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
Remarks
For more information about handling events, see Handling and Raising Events.
