login.aspx.cs

这是一个课程设计

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 Login : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    //用户登录验证
    protected void Button1_Click(object sender, EventArgs e)
    {

        //搜索用户信息并实例化
        string strSql = "SELECT [userID],[userLoginID],[userPwd],[userName],[userStauts],[scID] FROM [userInfo] WHERE [userLoginID] ='" + userID.Text + "'";
        UserInfo userinfo = new UserInfo();
        userinfo = DBHelper.sqllogin(strSql);

        //进行登录验证，用户信息为空则用户不存在
        if (userinfo == null)
        {

            ErrorMessage.Text = "用户不存在！";

        }

        //用户信息不为空，则进行密码验证，密码不一致则提示错误信息
        else if (userinfo.UserPwd.Equals(password.Text))
        {

            //利用Session传递用户编号至下一页面
            Session["uid"] = userinfo.UserID;

            //根据用户身份，将用户传递各自的页面
            if (userinfo.UserStauts == 0)
            {

                Response.Redirect("Manager.aspx");

            }
            else if (userinfo.UserStauts == 1)
            {

                Response.Redirect("Student.aspx");

            }
            else if (userinfo.UserStauts == 2)
            {

                Response.Redirect("Teacher.aspx");

            }

        }
        else
        {

            ErrorMessage.Text = "您的密码错误！";

        }

    }

    //重置按钮
    protected void Button2_Click(object sender, EventArgs e)
    {

        userID.Text = "";
        password.Text = "";

    }
}