private void Write_Board(object sender, RoutedEventArgs e)
        {
            string mainlabel = "게시판 글쓰기";

            StudentBoardConnet writeboard = new StudentBoardConnet(service, name, id, mainlabel, 3);
            writeboard.ShowDialog();
        }
        private void SelectList_Click(object sender, SelectionChangedEventArgs e)
        {
            if (boardlist.SelectedIndex != -1)
            {
                var selectindex = (boardlist.SelectedItem as BoardInfo).Number - 1;
                string str = studentboardlist[selectindex].ToString();

                string[] submistlist = new string[6];
                submistlist = str.Split('\a');

                string mainlabel = "게시물 확인";
                StudentBoardConnet boardcheck = new StudentBoardConnet(service, submistlist, mainlabel, id, 3);
                boardcheck.DataContext = boardlist.SelectedItem;
                boardcheck.ShowDialog();

                service.ReadStudentBoardWrite(id, submistlist[0], submistlist[5]); // 읽은파일 기록 표시
            }

            boardlist.SelectedIndex = -1;
        }