asp:Textbox off focus?

Question

I want to save the contents of a multline textbox when off focus - i.e. user has finished typing and clicks outside the textbox so it goes off focus.

I can handle the saving- thats no problem, but is there an off focus function? I don't mind a javascript version. I must be using asp:TextBox though.

I tried with onFocus, OnServerChange, onKeyUp, but it is not exactly how I want it. If any of you use Facebook, then it is like the textbox displayed right below the profile picture.

Answer 1

OnBlur :)

<asp:TextBox runat="server" onblur="alert(1);" />

(I can't recall, off the top of my head, if it will write any unknown server property to the client, I think it does, but if it doesn't, you'll need to add it as an attribute, in code).

-- Edit:

Confirmed that it does, indeed, happily write out unknown properties (onblur is not a property of TextBox control, but it will render in the HTML, so it works).

Answer 2

A multiline textbox should render to a textarea element. Assign an event handler to its onBlur event, and you should be good.