I have created a user control (uctxt) and an application to test that user control. Suppose the application lies in folder D:\snt\TestOcx on my local machine. And its exe will be created in D:\snt\TestOcx\TestOcx\bin\debug\TestOcx.exe and the dll of the usercontrol (uctxt.dll) to be tested will also be lying in the same above mentioned folder. Now I am putting this TestOcx.exe and uctxt.dll in the wwwroot folder of the server. But when I try to run this exe from server, a FileNotFoundException is generated indicating that the uctxt.dll file is not found. So where should I locate this dll?