Could not load file or assembly 'AjaxControlToolkit' or one of its dependencies. The system cannot find the file specified

Question

I am working on sharepoint 2010. I have created a simple visual web part which contain one text box and I have added calendarextender to it. I have added ajaxcontrolto

Answer 1

Even you tried above and it wont work, Just add another Page/MasterPage and add ToolKitScriptManager on it.It will create Bin Folder at required path. If still there is Error check the Register Assembly line on newly added page/MasterPage and copy that Register Assembly line to other pages wherever your error is.