SqlCommandBuilder SqlCommandBuilder=new SqlCommandBuilder (sqlDataAdapter);



Could you tell me why I join the above code error:
01000016 (TypeLoadException: Could not resolve the type with token from typeref, class/assembly System. The Data. SqlClient. SqlCommandBuilder, System. The Data. SqlClient, Version=3.0.3600.0, Culture=neutral, PublicKeyToken=3 be235df1c8d2ad3, Retargetable=Yes)