Autocomplete Textbox

my autocomplete textbox is not working m using visual studio2008.i hav included AjaxControlToolkit.dll in my directory but still getting an erro开发者_如何转开发r like "Could not load file or assembly 'AjaxControlToolkit' or one of its dependencies. The system cannot find the file specified"

what does it mean m not getting

Is this local, or deployed to a server. If it is local make sure you add a reference to the DLL. If deployed make sure the reference has the "Copy Local" property set to true in order for it to be included when published.

Maybe the DLL is compiled the wrong way. If the DLL is an explicit x86 (or x64) build instead of an "All CPU" build you will also get these errors when you use that DLL in an application build for all CPU.

I have seen this happen with a dll compiled explicitly for x86 which was used in an application which was compiled with "all cpu" running on a x64 machine.