This is our Ajax TextBox Control which basically is identical to the ASP.NET TextBox except that instead of creating postbacks it creates Ajax Callbacks. Like most of the Ajax Controls in Gaia it inherits from the ASP.NET counterpart and thereby behaves mostly identical in all other manners to the ASP.NET TextBox version. Don't be tricked by its simplicity though, like all of the "native controls" in Gaia their power comes from the ease of combining them together to form more "complex controls" when put together. Our Ajax TextBox is for instance the foundation of our Ajax AutoCompleter Control and our Ajax DateTimePicker Control.
Server-side code is run when focus is lost.
Server-side code is called every 0.2 seconds (if you're typing).
As you can see in the above two examples the TextBox can be a quite versatile Ajax Control. As with everything else on the web; it just needs a little bit of Ajaxifying to dassle you all over again ;)