userlogin.aspx.cs

ASP.NET网络编程从入门到精通书的源代码资料

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.Data.SqlClient;

public partial class Desktop_UserLogin : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
	protected void SureBtn_Click(object sender,EventArgs e)
	{
		if (UserName.Text == null || UserName.Text == "" || UserName.Text.Length <= 0)
		{
			ShowMessage("用户名称为空，请输入用户名称！");
			return;
		}

		if (Password.Text == null || Password.Text == "" || Password.Text.Length <= 0)
		{
			ShowMessage("用户密码为空，请输入用户密码！");
			return;
		}

		String userId = "";

		///定义类并获取用户的登陆信息            
		User user = new User();
		SqlDataReader recu = user.GetUserLogin(UserName.Text.Trim(),Password.Text.Trim());

		///判断用户是否合法
		if (recu.Read())
		{
			userId = recu["UserID"].ToString();
		}
		recu.Close();

		///验证用户合法性，并跳转到系统平台
		if ((userId != null) && (userId != ""))
		{
			Session["UserID"] = userId;
			Session["UserName"] = UserName.Text;

			//跳转到登录后的第一个页面
			Response.Redirect("~/Desktop/Product.aspx");
		}
		else
		{
			///显示错误信息
			ShowMessage("你输入的用户名称/密码有误，请重新输入！");
		}
	}

	private void ShowMessage(string sMsg)
	{
		///显示操作结果信息
		Response.Write("<script>window.alert('" + sMsg + "')</script>");
	}
}