private void tsmiOpen_Click(object sender, EventArgs e)
        {
            this.tbControl.TabPages.Clear();
            OpenFileDialog dialog = new OpenFileDialog();

            dialog.Filter           = "Excel file (*.xlsx)|*.xls;*.xlsx";
            dialog.InitialDirectory = System.AppDomain.CurrentDomain.BaseDirectory;//Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory);
            dialog.Title            = "请选择规范的数据文件";
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                ExcelHandler excelHandler = new ExcelHandler(dialog.FileName);
                MapData = excelHandler.ExcelToTable();
                foreach (KeyValuePair <string, DataTable> kv in MapData)
                {
                    this.tbControl.TabPages.Add(kv.Key, kv.Key);
                    TableLayoutPanel tb1 = new TableLayoutPanel();
                    this.tbControl.TabPages[kv.Key].Controls.Add(tb1);
                    tb1.Dock = DockStyle.Fill;
                    DataGridView grdUpload = new DataGridView();
                    grdUpload.DataSource = kv.Value;
                    grdUpload.Dock       = DockStyle.Fill;
                    tb1.Controls.Add(grdUpload, 0, 0);
                    grdUpload.ReadOnly = true;
                }
            }
        }