Error rise When I build asp.net application 2012
Error 41 Could not copy "D:\Work Folder\*******\bin\Debug\BLL_DES.dll" to "bin\BLL_DES.dll". Exceeded retry count of 10. Failed. DES_ODS
and
Error 42 Unable to copy file "D:\Work Folde\*****\BLL_DES\bin\Debug\BLL_DES.dll" to "bin\BLL_DES.dll". The process cannot access the file 'bin\BLL_DES.dll' because it is being used by another process.
Please tell me about this error..............