private void DataGrid1_CurrentCellChanged(object sender, System.EventArgs e)
        {
            DataGrid1.Select(DataGrid1.CurrentRowIndex);

            textBox_Committee_ID.Text     = DataGrid1[DataGrid1.CurrentRowIndex, 0].ToString();
            textBox_Committee_Name.Text   = conn.Committee_IDtoWhat(textBox_Committee_ID.Text, "Committee_Name");
            comboBox_QuXian.SelectedValue = (int.Parse(conn.Office_IDtoWhat(conn.Committee_IDtoWhat(textBox_Committee_ID.Text, "Office_ID"), "QuXian_ID_OfficeIn")));

            //按数据库里边存储的办事处绑定下拉列表
            string errorstring = conn.BindComboBox("Select * from Office Where QuXian_ID_OfficeIn=" + comboBox_QuXian.SelectedValue.ToString(), comboBox_Office, "Office_ID", "Office_Name");

            if (errorstring != "OK")
            {
                MessageBox.Show("请检查数据库!" + errorstring, "提醒!",
                                MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
                button1.Enabled = false;
                return;
            }
            comboBox_Office.SelectedValue = (int.Parse(conn.Committee_IDtoWhat(textBox_Committee_ID.Text, "Office_ID")));
            button1.Enabled = true;
        }