private void ShowMessage()
        {
            TextBlock My_Message = new TextBlock()
            {
                TextWrapping        = TextWrapping.Wrap,
                FontSize            = 16,
                Margin              = new Thickness(10),
                MinWidth            = (this.Width * 0.7389) / 3,
                MaxWidth            = (this.Width * 0.7389) / 2,
                MinHeight           = (this.Height * 0.7205) / 10,
                HorizontalAlignment = HorizontalAlignment.Left,
                Padding             = new Thickness(5),
                Background          = new SolidColorBrush(Color.FromRgb(251, 180, 180))
            };

            My_Message.Inlines.Add(new Run(Text_Message.Text));
            My_Message.Inlines.Add(new Run(DateTime.Now.ToString().PadLeft(500))
            {
                Foreground = Brushes.Black, FontSize = 11
            });
            StackPanel_Messages.Children.Add(My_Message);
            ScrollViewer_Messages.PageDown();
        }
 private void UserClick(object sender, RoutedEventArgs e)
 {
     if (_adminOnline == false)
     {
         _user_Click = true;
         _toUserName = (sender as Button).Tag.ToString();
         ShowAllMessages();
         ChangeBackgroundUserClick();
         SendMessage_Button.Visibility  = Visibility.Visible;
         StackPanel_Messages.Visibility = Visibility.Visible;
         Text_Message.Visibility        = Visibility.Visible;
         ScrollViewer_Messages.PageDown();
     }
     else
     {
         _toUserName = (sender as Button).Tag.ToString();
         GetUserLog();
         Text_Message.Visibility       = Visibility.Hidden;
         SendMessage_Button.Visibility = Visibility.Hidden;
         DataGrid_Admin.Visibility     = Visibility.Visible;
         ChangeBackgroundUserClick();
     }
 }