private void BT_SendAddFriendMessage_Click(object sender, RoutedEventArgs e)
        {
            ContentControl bt  = sender as ContentControl;
            long           num = Convert.ToInt64(bt.Tag);

            SocketTool.GetClientUDP().SendToServer(TheMessageModel.MAKEFRIEND(UserSource.UloginNumber ?? 0, num, Model.MessageContent.MakeFriendType.SendStart));
        }
        private void MENUITEM_Friends_Click(object sender, RoutedEventArgs e)
        {
            MenuItem item         = (sender as MenuItem);
            User     SelectedUser = item.DataContext as User;

            switch (item.Tag.ToString().ToUpper())
            {
            case "DELETEFRIEND":
                SocketTool.GetClientUDP().SendToServer(TheMessageModel.MAKEFRIEND(UserSource.UloginNumber ?? 0, SelectedUser.UloginNumber ?? 0, MakeFriendType.Delete))
                ; break;
            }
        }