The Module Dll1.dll was loaded but the entry point DllRegisterserver was not found

[C# Programming]

Hi All,
I was create a Dll by using c# it works correctly with application. i want to register it's but regsvr command generate error .

error is given below.
The Module Dll1.dll was loaded but the entry point DllRegisterserver was not found.

Make sure that Dll1.dll is a valid Dll or OCX File and then try again.

so what is the problem behind it.


Thanks in advance

If you can think then I Can.