/// <summary>
/// Function Name : SftpRename()
/// Description : SftpRename function used for renaming a file on server
/// </summary>
/// <param name="NewName">New name of the file</param>
/// <param name="OldName">Old file name</param>
public void SftpRename(String NewName, String OldName)
{
Thread.Sleep(5000);
_objSftpClient.Rename(NewName, OldName);
}