private void BtnRemotePrint_Click(object sender, RoutedEventArgs e) { if (isStarted && isLoggedIn) { //send file for remote print pdf if (txtCallID.Text.Length > 0 && txtFile.Content.ToString().Length > 0) { sdk.XFileSend(txtCallID.Text, mainModel.FileName, System.IO.Path.GetFileName(mainModel.FileName)); } } }