本文实例为大家分享了ASP.net(C#)实现简易聊天室功能的具体代码，供大家参考，具体内容如下
1.搭建框架
<html ><head> <title>聊天系统</title></head> <frameset rows="80%,20%" > <frameset cols="20%,80%"> <frame src="Register.aspx" /> <frame src="main.aspx" /> </frameset> <frame src="login.aspx"/> </frameset><body ></body></html>
2.框架涉及三个页面
建立相应的页面布局：
1.login.asp
using System;using System.Collections;using System.Configuration;using System.Data;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Xml.Linq;public partial class login : System.Web.UI.Page{undefined protected void Page_Load(object sender, EventArgs e) {undefined } protected void LoginBtn_Click(object sendoQQhWjVer, EventArgs e) {undefined if (LoginID.Text.Trim() == string.Empty) {undefined Response.Write("<script>alert('请输入用户名！')</script>"); return; } if (LoginPwd.Text!= "123456") {undefined Response.Write("<script>alert('密码不正确，请重新输入')</script>"); return; } if (!IfLonined()) {undefined Response.Write("<script>alert('用户名已经存在')</script>"); return; } Session["username"] = LoginID.Text; if (Application["user"] == null) {undefined Application["user"] = Session["username"]; } else {undefined Application["user"] += "," + Session["username"]; } Response.Redirect("send.aspx"); } protected bool IfLonined() {undefined Application.Lock(); string users; string[]user; if (Application["user"]!=null) {undefined users = Application["user"].ToString(); user = users.Split(','); foreach(string s in user) {undefined if(s==LoginID.Text.Trim().ToString()) {undefined return false; } } } Application.UnLock(); return true; } protected void LoginPWD_TextChanged(object sender, EventArgs e) {undefined}}2.Register.asp
using System;using System.Collections;using System.Configuration;using System.Data;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Xml.Linq;public partial class Register : System.Web.UI.Page{undefined pwww.easck.comrotected ArrayList ItemList = new ArrayList(); protected void Page_Load(object sender, EventArgs e) {undefined Response.AddHeader("Refresh", "1"); Application.Lock(); string users; string[] user; if (Application["user"]!=null) {undefined users = Application["user"].ToString(); user = users.Split(','); for(int i=user.Length-1;i>=0;i--) {undefined ItemList.Add(user[i].ToString()); } UserList.DataSource = ItemList; UserList.DataBind(); } Application.UnLock(); } protected void UserList_SelectedIndexChanged(object sender, EventArgs e) {undefined }}3.send.asp
using System;using System.Collections;using System.Configuration;using System.Data;using System.Linq;using SystoQQhWjVem.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Xml.Linq;public partial class send : System.Web.UI.Page{undefined protected void Page_Load(object sender, EventArgs e) {undefined if (Session["username"] != null) {undefined Username.Text = Session["username"].ToString() + "说:"; } else {undefined Response.Redirect("login.aspx"); } } protected void SendBtn_Click(object sender, EventArgs e) {undefined string message; message = "<font color='blue'>" + Session["username"].ToString() + "</font>说:"; message += Message.Text; message += "(<i>" + DateTime.Now.ToString() + "</i>)"; message += "<br>"; Application.Lock(); if (chk.Checked) Application["chatcontent"] = (string)Application["chatcontent"] + message + "<img src=image/00.gif>" + "<img src=image/01.gif>"; else Application["chatcontent"] = (string)Application["chatcontent"] + message; Application.UnLock(); Message.Text = null; } protected void LoginBtn_Click(object sender, EventArgs e) {undefined Response.Redirect("login.aspx")www.easck.com; } protected void LoginOutBtn_Click(object sender, EventArgs e) {undefined Application.Lock(); if (Application["user"] != null) {undefined string users; string[] user; users = Application["user"].ToString(); Application["user"] = null; user = users.Split(','); foreach (string s in user) {undefined if (s != Session["username"].ToString()) {undefined if (Application["user"] == null) {undefined Application["user"] = s; } else {undefined Application["uesr"] = Application["user"] + "," + s; } } } } if (Session["username"] != null) {undefined Session["username"] = null; } Application.UnLock(); Response.Redirect("login.aspx"); } protected void CheckBox1_CheckedChanged(object sender, EventArgs e) {undefined }}以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。
