SharePoint autocomplete lookup field with AJAX

Project Description
Taking my inspiration from Jan Tielen's control http://www.codeplex.com/smarttools/Wiki/View.aspx?title=Autocomplete%20Text%20Field, I decided to build my own with the difference that

- The field is a lookup field (derived from SPFieldLookup)
- You don't need to install the ASP.NET AJAX Framework

I did it that way because in some environments, it's often tricky to change the production system by installing the AJAX framework and/or some service packs. This component embedds "manual" AJAX calls towards the SharePoint Web Service so that you don't need to install anything special to make it working.

Here are a few screenshots illustrating how to use the component. You just add the field to a list as you would with a standard SharePoint field



When creating a list item, you use the textbox to start typing your keyword, the AJAX query (performed after each typing) returns maximum 10 relevant items.



Update in V2

The returned list is a dynamic HTML table instead of a HTML Select tag


Additional Notes:

Note that this field behaves the same way than the standard SharePoint lookup field except that:

- It cannot be multi-valuated
- the target lookup field is frozen and always the Title field