Fire event on textbox lose focus

Question

I'm trying to call a method as soon as a TextBox on my screen gets 'un-focused' if that makes any sense? The user types in a username and as soon as that textbox loses focus I want to fire an event that checks if that username is indeed available.

Thanks!

Solution 1

There is a Control.Leave in C#, which I think is perfect for your purpose.

you can go to events of the textbox in visual studio, and find the Leave event.

The code generated will be like :

private void txtbox_Leave(object sender, EventArgs e)
{
            //Check for available operation Code
} 

Solution 2

Please explore the LostFocus event in a textbox. Hope it helps

Comments

[Admin]

Ah perfect! Thank you very much, in Windows Phone it's called TextBox_LostFocus. But all the same. Thanks again

[willy wonka]

I can't see the LostFocus event into the list of events of the Properties panel in MS C# Express 2008. I can only see Leave event.