<p>Has anyone used jQuery to populate an autocomplete list on a textbox using ASP.NET webforms? If so, can anyone recommend a good method? From my reading so far, it seems like most people are using delimited lists rather than JSON to bring the items back. I'm open to any ideas that will get me up and running rather quickly. </p>

There are many, many examples on the web. I've used this one before, and if I recall you only need to create an aspx that will return matching terms as a
```
<BR/>
```
separated list:
http://www.dyve.net/jquery/?autocomplete
The documentation shows php in the example, but there's no difference in the way the plugin itself works and I didn't have to do anything special as a result.
From the documentation:
```
```
> $("#input_box").autocomplete("my_autocomplete_backend.php");
```
```
In the above example, Autocomplete
  expects an input element with the id
  "input_box" to exist. When a user
  starts typing in the input box, the
  autocompleter will request
  my_autocomplete_backend.php with a GET
  parameter named q that contains the
  current value of the input box. Let's
  assume that the user has typed
  "foo"(without quotes). Autocomplete
  will then request
  my_autocomplete_backend.php?q=foo.
The backend should output possible
  values for the autocompleter, each on
  a single line. Output cannot contain
  the pipe symbol "|", since that is
  considered a separator (more on that
  later).
An appropiate simple output would be:
  foo 
  fool 
  foot 
  footloose 
  foo fighters
  food fight