login.aspx.cs

一个 用Ajax实现聊天室的简单例子 不全的地方指点

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 ChatBLL;
using ChatModel;

public partial class Login : System.Web.UI.Page
{
    UserService usc = new UserService();

    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void imgBtnLogin_Click(object sender, ImageClickEventArgs e)
    {
        string userName=txtUserName.Text;
        string pass=txtPass.Text;
        if ("".Equals(userName) || "".Equals(pass))
            Page.ClientScript.RegisterStartupScript(GetType(), "", "<script>alert(\"用户名或密码不能为空\")</script>");
        else
        {
            User user=usc.isLogin(userName, pass);
            if (null == user)
                Page.ClientScript.RegisterStartupScript(GetType(), "", "<script>alert(\"用户名或密码不正确\")</script>");
            else
            {
                Session["userID"] = user.ID;
                lblName.Text = "您好："+user.name;
                System.Threading.Thread.Sleep(3000);
                if (user.name.Equals("管理员"))
                    imgBtnManage.Visible = true;
                div1.Style.Add("display", "none");
                div2.Style.Add("display", "block");
            }
        }
         
    }
    protected void imgBtnRegister_Click(object sender, ImageClickEventArgs e)
    {
        Response.Redirect("Errol.aspx");
    }
    protected void imgBtnManage_Click(object sender, ImageClickEventArgs e)
    {

    }
    protected void imgBtnChat_Click(object sender, ImageClickEventArgs e)
    {
        Response.Redirect("Chat.aspx");
    }
}