login.aspx.cs

一个电子商务网源码

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

namespace web
{
	/// <summary>
	/// Login 的摘要说明。
	/// </summary>
	public partial class Login : System.Web.UI.Page
	{
	
		protected CustomerDAO customerDAO = new CustomerDAO();

		protected void Page_Load(object sender, System.EventArgs e)
		{
			this.ImageButton1.Attributes.Add("onclick", "return checkEmpty(LoginName)&&checkEmpty(LoginPwd)");
		}

		#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.ImageButton1.Click += new System.Web.UI.ImageClickEventHandler(this.ImageButton1_Click);

		}
		#endregion

		private void ImageButton1_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			string loginName = LoginName.Text.Trim();
			string loginPwd = LoginPwd.Text.Trim();
			if( customerDAO.checkIsExist( loginName,loginPwd ) != 0 )
			{
				if( !customerDAO.isLogin(loginName) )
				{
					customerDAO.Login(loginName);
					Session["LoginName"] = loginName;
				}
				if(Request.Params["Return"] != null)
				{
					Response.Redirect(Request.Params["Return"].ToString());
				}
				else
				{
					Response.Redirect("Index.aspx");
				}
			}
			else
			{
				Response.Write("<script>alert('用户不存在或者密码错误!')</script>");
			}
		}
	}
}