Admin/XiaoShou.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;

public partial class XiaoShou : System.Web.UI.Page
{
  
        protected void Page_Load(object sender, EventArgs e)
        {
           
            if (!IsPostBack)
            {
                string SQL = "select * from tb_Goods";
                DataSet ds = DBHelper.GetDataSet(SQL);
                this.DropDownList1.DataSource = ds;
                this.DropDownList1.DataTextField = "GoodsName";
                this.DropDownList1.DataValueField = "Price";
                this.DropDownList1.DataBind(); GetDrop();
               
            }
        }
 

        protected void Button1_Click(object sender, EventArgs e)
        {
            
            string SQL = "";
           bool iRet=false;

           if (Request["ID"] != null)
           {//当有参数传入的时候默认为修改信息，并且拼接对应的数据库语句
               int ID = int.Parse(Request["ID"].ToString());
               SQL = "update TB_XiaoShou set GoodsName='" + this.DropDownList1.SelectedItem.Text.Trim() + "',JiaGe='" + TextBox1.Text + "',ShuLiang='" + TextBox2.Text + "' where ID=" + ID;
               iRet = DBHelper.ExecSql(SQL);

           }
           else
           {
               //当没有参数传入的时候默认为添加信息，并且拼接对应的数据库语句
               SQL = "insert into TB_XiaoShou(GoodsName,JiaGe,ShuLiang,XiaoSHouRen) values('" + this.DropDownList1.SelectedItem.Text.Trim() + "','" + TextBox1.Text + "','" + TextBox2.Text + "','" +Session["username"].ToString() + "')";
               SQL = SQL + ";update tb_Goods set sales=sales" + this.TextBox2.Text + " where GoodsName='" + this.DropDownList1.SelectedItem.Text.Trim() + "'";
               iRet = DBHelper.ExecSql(SQL);

           }

          
            

            if (iRet)
            {
                 
                Response.Write("<script>alert('恭喜您，操作成功！');document.location=document.location;</script>");
            }