admin/adelete.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;

public partial class admin_adelete : System.Web.UI.Page
{
    String SqlStr;
    DataSet Ds = new DataSet();
    DB db = new DB();
    String Book_ID;
    public void DataListBind()
    {
        SqlStr = "select * from 手机表";
        Ds = db.GetDataTableBySql(SqlStr);
        try
        {
            this.DataList1.DataSource = Ds.Tables[0].DefaultView;
            this.DataList1.DataBind();
        }
        catch (Exception)
        {
            Response.Write("<script>alert('没有得到数据,请重试！')</script>");
        }
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Page.IsPostBack == false)
        {
            SqlStr = "select * from 手机表";
            Ds = db.GetDataTableBySql(SqlStr);
            try
            {
                if (Ds.Tables[0].Rows.Count != 0)
                {
                    this.DataList1.DataSource = Ds.Tables[0].DefaultView;
                    this.DataList1.DataBind();
                }
            }
            catch (Exception)
            {
                Response.Write("<script>alert('没有获得任何数据，请检查！')</script>");
            }
        }
    }
    protected void DataList1_DeleteCommand(object source, DataListCommandEventArgs e)
    {
        String book_id = this.DataList1.DataKeys[e.Item.ItemIndex].ToString();
        SqlStr = "delete from 手机表 where 手机编号='" + book_id + "'";
        Boolean Del_Result;
        Del_Result = db.UpdateDataBySql(SqlStr);
        if (Del_Result == true)
        {
            Response.Write("<script>alert('记录删除成功！')</script>");
            DataListBind();
        }
        else