I have an \[code\]ASP.NET Webform (C#)\[/code\] that has a textbox on it. I would like to know if there is a way to fire an event when the user tabs off the textbox without entering a value?I set \[code\]Autopostback=True\[/code\] and \[code\]CauseValidation=true\[/code\]. If i enter anything in the textbox it fires the \[code\]TextChanged\[/code\] event which is fine. But if they tab without entering anything nothing happens.Any Ideas?thank you