Admin/XsList.aspx.cs

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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;

public partial class Admin_XsList : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            //调用函数
            initDg();
        }
    }

    private void initDg()
    {
        //绑定学生列表
        this.GridView1.DataSource = db.GetData("SELECT * FROM dbo.学生 INNER JOIN dbo.班级 ON dbo.学生.班级代码 = dbo.班级.班级代码");
        this.GridView1.DataBind();
    }

    protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        string idKey = this.GridView1.DataKeys[Convert.ToInt32(e.CommandArgument)]["学号"].ToString();
        if (e.CommandName == "Mod")
        {
            //传递修改的标志 跳转页面
            Response.Redirect("XsEdit.aspx?ID=" + idKey);
        }
        else if (e.CommandName == "Del")
        {
            if (db.GetData("select * from 床位分配 where  学号='" + idKey + "'").Rows.Count > 0)
            {
                Page.RegisterClientScriptBlock("onload", "<script>alert('学号存在信息');</script>");
                return;
            }
            if (db.GetData("select * from 班级交费 where  学号='" + idKey + "'").Rows.Count > 0)
            {
                Page.RegisterClientScriptBlock("onload", "<script>alert('学号存在信息');</script>");
                return;
            }
            //删除指定路径下边的图片文件



            string DPath;
            if (Server.MapPath("").Substring(Server.MapPath("").Length - 1, 1) == @"\")
            {
                DPath = Server.MapPath("");
            }
            else