ASP.NET2.0下含有DropDownList的GridView编辑、删除的完整例子！

ASP.NET2.0下含有DropDownList的GridView编辑、删除的完整例子！(7)     /// <summary>
    /// 删除记录过程
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        //得到单位编号
        string rowToDelete = GridView1.DataKeys[e.RowIndex].Values[0].ToString();
        //转换为整数
        //int ID=Convert.ToInt32(rowToDelete);
        //从数据库中删除
        string str = "DELETE FROM DB1 where DB1_1=" + "'" + rowToDelete + "'" + "";
      
        try
        {
        conn.RunSql(str);
        //重新绑定数据
        GridViewBind();
        }
        catch (Exception ex)
        {
        Response.Write("数据库错误，错误原因：" + ex.Message);
        Response.End();
        }

    }
    /// <summary>
    /// 更新记录过程
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        string ID = GridView1.DataKeys[e.RowIndex].Values[0].ToString();