read and files in class library gives me an error

[sasire18]

hi in the class library i am using filereaders,fileinfo,filestreams for reading and writing files for source and destination paths but i am getting error near the filereaders,filestreams "namespace or assembly missing" .Even if i use System.IO it still gives me an error. Any solution for the above problem sasi

[Guffa]

Look at the error message, it will tell you exactly what class it has problems with. Then you look up the class in MSDN Library[^], there you will see what namespace the class is in. --- b { font-weight: normal; }