TabbedMDIManager and CausesFormValidation

Hello, I am setting the CausesFormValidation property on the TabbedMDIManager during construction. My MDI child window in handling the Validating event and setting the Cancel property on the ValidatingEventArgs parameter. The handler is getting called, but setting the Cancel property is having no effect. Am I using the CausesFormValidation incorrectly?

Hi Frank, From what I can tell, you are using CausesFormValidation correctly. It appears that the Form validating event is preventing the current Form from losing focus, but not preventing the other Form from being displayed. I have entered this problem as Defect #351. Regards, Gregory Austin Syncfusion Inc.