总报错

Question

这是源码：
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
namespace OpencloseDB
{    public partial class kaiqi :System.Web.UI.Page
    {
        protected void Button1_Click(object sender, EventArgs e)
        {
            if (DropDownList1.SelectedValue.ToString() == "")
            {
                Response.Write("<script>alert('请选择操作机器！');</script>");
            }
            else
            {//更新语句
                string sql = string.Format("update TbCollector set  gprst= 1 where CollectNo={0},DropDownList.SelectedValue.ToString()");
                int result = 0;
                try
                {
                    SqlCommand command = new SqlCommand(sql, DBhelper.connection);
                    DBhelper.connection.open();
                    result = command.ExecuteNonquery();
                }
                catch (Exception ex)
                {
                }
                finally
                {
                    DBhelper.connection.close();
                }
                if (result < 1)
                {
                    Response.Write("<script>alert('开启成功！');</script>");
                }
                else
                {
                    Response.Write("<script>alert('开启失败！');</script>");
                }
            }        }
        protected void Button2_Click(object sender, EventArgs e)
        {
            if (DropDownList1.SelectedValue.ToString() == "")
            {
                Response.Write("<script>alert('请选择操作机器！');</script>");
            }
            else
            {//更新语句
                string sql = string.Format("update TbCollector set  gprst= 0 where CollectNo={0},DropDownList.SelectedValue.ToString()");
                int result = 0;
                try
                {
                    SqlCommand command = new SqlCommand(sql, DBhelper.connection);
                    DBhelper.connection.open();
                    result = command.ExecuteNonquery();
                }
                catch (Exception ex)
                {
                }
                finally
                {
                    DBhelper.connection.close();
                }
                if (result < 1)
                {
                    Response.Write("<script>alert('关闭成功！');</script>");
                }
                else
                {
                    Response.Write("<script>alert('关闭失败！');</script>");
                }
            }           }
    }
}错误提示：
错误 2 “ASP.kaiqi_aspx.GetTypeHashCode()”: 没有找到适合的方法来重写 c:\Users\xj\AppData\Local\Temp\Temporary ASP.NET Files\website2\2a8bc898\841d5049\App_Web_oi4odi5p.2.cs 481
错误 3 “ASP.kaiqi_aspx.ProcessRequest(System.Web.HttpContext)”: 没有找到适合的方法来重写 c:\Users\xj\AppData\Local\Temp\Temporary ASP.NET Files\website2\2a8bc898\841d5049\App_Web_oi4odi5p.2.cs 486
错误 4 “ASP.kaiqi_aspx”不实现接口成员“System.Web.IHttpHandler.IsReusable” c:\Users\xj\AppData\Local\Temp\Temporary ASP.NET Files\website2\2a8bc898\841d5049\App_Web_oi4odi5p.2.cs 150
错误 1 请确保此代码文件中定义的类与“inherits”属性匹配，并且该类扩展的基类(例如 Page 或 UserControl)是正确的。 D:\WebSite2\kaiqi.aspx.cs 19 33 D:\WebSite2\

Answer 1

报的错跟这个代码没关系    应该是别的地方的   这里调用出了问题！