How To Create a DLL Form a C# Class

Go to Start > Visual Studio Command Prompt > Type F: and press enter
and ten type the path of your Classfile which You want to convert as DLL file.

E.G

F:\WebSite1>csc /t:library class1.cs

Explanation 1) csc --------- is a compilation command.
2) /t:library -- is a command to convert a class file to dll.
3) class.cs ---- is the file name or class name.