ASP.net(C#)实现简易聊天室功能

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

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("");
            return;
        }
        if (LoginPwd.Text!= "123456")
        {undefined
            Response.Write("");
            return;
        }
        if (!IfLonined())
        {undefined
            Response.Write("");
            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 = "" + Session["username"].ToString() + "说:";
        message += Message.Text;
        message += "(" + DateTime.Now.ToString() + ")";
        message += "
";
        Application.Lock();
        if (chk.Checked)
            Application["chatcontent"] = (string)Application["chatcontent"] + message + "" + "";
        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

    }

}

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脚本之家。