charge.aspx.cs

有关购物的程序

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.OleDb;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace shopping.受保护窗体
{
	/// <summary>
	/// charge 的摘要说明。
	/// </summary>
	public class charge : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.HyperLink HyperLink1;
		protected System.Web.UI.WebControls.Label Label7;
		protected System.Web.UI.WebControls.Label list;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.TextBox TextBox1;
		protected System.Web.UI.WebControls.Label Label6;
		protected System.Web.UI.WebControls.Label payout;
		protected System.Web.UI.WebControls.Label Label4;
		protected System.Web.UI.WebControls.Label paynow;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.Label goodsnum;
		protected System.Web.UI.WebControls.Label Label5;
		protected System.Web.UI.WebControls.Label goodsName;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.Label goodsID;
		protected System.Web.UI.WebControls.Label Label1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(!Page.IsPostBack)
			{
				list.Text="尊敬的"+Session["username"].ToString()+"客户！你的帐单〉〉";
				this.goodsID.Text=Page.Request["check"].ToString();
				string str="Provider=Microsoft.Jet.OleDb.4.0;";
				str+=@"Data Source=";
				str+=Server.MapPath("usergoods.mdb");
				OleDbConnection conn=new OleDbConnection(str);
				conn.Open();
				string strsql="select 商品名称 from shopping where 客户名='"+Session["username"].ToString()+"' and 商品ID='"+Page.Request["check"].ToString()+"'";
				OleDbCommand comm=new OleDbCommand(strsql,conn);
				comm.CommandType=CommandType.Text;
				this.goodsName.Text=comm.ExecuteScalar().ToString();
				comm.CommandText="select 数量 from shopping where 客户名='"+Session["username"].ToString()+"' and 商品ID='"+Page.Request["check"].ToString()+"'";
				this.goodsnum.Text=comm.ExecuteScalar().ToString();
				comm.CommandText="select 应付金额 from shopping where 客户名='"+Session["username"].ToString()+"' and 商品ID='"+Page.Request["check"].ToString()+"'";
				this.paynow.Text=comm.ExecuteScalar().ToString();
				comm.CommandText="select 已付金额 from shopping where 客户名='"+Session["username"].ToString()+"' and 商品ID='"+Page.Request["check"].ToString()+"'";
				this.payout.Text=comm.ExecuteScalar().ToString();
				conn.Close();
			}
		}

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button1_Click(object sender, System.EventArgs e)
		{
			if(this.TextBox1.Text==null)
			{
				Response.Write("<script language=javascript>alert('请输入金额！')</script>");
			}
			else
			{
				
				string str="Provider=Microsoft.Jet.OleDb.4.0;";
				str+=@"Data Source=";
				str+=Server.MapPath("usergoods.mdb");
				OleDbConnection conn=new OleDbConnection(str);
				conn.Open();
				int yourPay=int.Parse(this.payout.Text)+int.Parse(this.TextBox1.Text);
				string strsql="update shopping set 已付金额="+yourPay.ToString()+" where 客户名='"+Session["username"].ToString()+"' and 商品ID='"+Page.Request["check"].ToString()+"'";
				OleDbCommand comm=new OleDbCommand(strsql,conn);
				comm.CommandType=CommandType.Text;
				comm.ExecuteNonQuery();
				this.Label7.Text="付款成功！";
				comm.CommandText="select 已付金额 from shopping where 客户名='"+Session["username"].ToString()+"' and 商品ID='"+Page.Request["check"].ToString()+"'";
				this.payout.Text=comm.ExecuteScalar().ToString();
				conn.Close();
			}
		}
	}
}