Your slashes are in the wrong direction. On windows you should use back slashes. E.g.
string rootFolderPath = @"F:\model_RCCMREC\";
string destinationPath = @"F:\model_RCCMrecTransfered\";
Your slashes are in the wrong direction. On windows you should use back slashes. E.g.
string rootFolderPath = @"F:\model_RCCMREC\";
string destinationPath = @"F:\model_RCCMrecTransfered\";