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20 Feb

If a user is tabbing through the form and tabs from the text box, the validating/validated events are fired. Once the value is cached, the next time the user tabs through the box, the validating event will check to see if the _Cache is different from the . If so that is when I would like to raise the validating event to the parent form (as well as the validated event).

On Validating(Cancel Event Args) method also enables derived classes to handle the event without attaching a delegate.

Current;//获取当前Row View Customers Row cust Row = current Row View. Customers; //将Text Box的Text属性Binding到table的Customer ID列customer IDText Box.

Row as Customers Row;//类型转换为当前数据项 string company = cust Row.

Doing so can cause your application or the operating system to stop responding.

For more information, see the WM_KILLFOCUS topic in the "Keyboard Input Reference" section, and the "Message Deadlocks" section of the "About Messages and Message Queues" topic in the MSDN library at