ToolStripControlHost.Validating Event
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Occurs while the hosted control is validating.
public:
event System::ComponentModel::CancelEventHandler ^ Validating;public event System.ComponentModel.CancelEventHandler Validating;public event System.ComponentModel.CancelEventHandler? Validating;member this.Validating : System.ComponentModel.CancelEventHandler Public Custom Event Validating As CancelEventHandler 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 Validating 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 ToolStripControlHost named ToolStripControlHost1. Then ensure that the event handler is associated with the Validating event.
private void ToolStripControlHost1_Validating(Object sender, CancelEventArgs e) {
System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "Cancel", e.Cancel );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "Validating Event" );
}
Private Sub ToolStripControlHost1_Validating(sender as Object, e as CancelEventArgs) _
Handles ToolStripControlHost1.Validating
Dim messageBoxVB as New System.Text.StringBuilder()
messageBoxVB.AppendFormat("{0} = {1}", "Cancel", e.Cancel)
messageBoxVB.AppendLine()
MessageBox.Show(messageBoxVB.ToString(),"Validating Event")
End Sub
Remarks
For more information about handling events, see Handling and Raising Events.
