ASP.net(C#)实现简易聊天室功能

Glenna ·

更新时间:2024-11-13

· 331 次阅读

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 sender, 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
    protected 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 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 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");
    }
    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
    }
}

ASP 聊天室 C# ASP.NET net

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