C#客户端服务器与多客户端服务器C#

有人能给我解释一下c#中单客户端服务器和多客户端服务器的区别吗

例如，如果我想同时与多个客户端建立聊天室，我不确定我是否理解正确，但我们是否只为每个客户端分配新的IP，然后服务器读取它们

这是客户端代码

        public Form1()
    {
        //
        // Required for Windows Form Designer support
        //
        InitializeComponent();
        read=new Thread(new ThreadStart(RunClient));
        read.Start();
    }

    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    protected override void Dispose( bool disposing )
    {
        if( disposing )
        {
            if (components != null) 
            {
                components.Dispose();
            }
        }
        base.Dispose( disposing );
    }

    #region Windows Form Designer generated code
    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
        System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
        //this.axSkin1 = new AxACTIVESKINLib.AxSkin();
        this.tmsg = new System.Windows.Forms.TextBox();
        this.bsend = new System.Windows.Forms.Button();
        this.groupBox1 = new System.Windows.Forms.GroupBox();
        this.tchat = new System.Windows.Forms.RichTextBox();
        this.Message = new System.Windows.Forms.GroupBox();
        this.Box1 = new System.Windows.Forms.PictureBox();
        //((System.ComponentModel.ISupportInitialize)(this.axSkin1)).BeginInit();
        this.groupBox1.SuspendLayout();
        this.SuspendLayout();
        // 
        // axSkin1
        // 
        //this.axSkin1.Enabled = true;
        //this.axSkin1.Location = new System.Drawing.Point(368, 272);
        //this.axSkin1.Name = "axSkin1";
        //this.axSkin1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axSkin1.OcxState")));
        //this.axSkin1.Size = new System.Drawing.Size(32, 32);
        //this.axSkin1.TabIndex = 0;
        //// 
        // tmsg
        // 
        this.tmsg.ForeColor = System.Drawing.Color.Coral;
        this.tmsg.Location = new System.Drawing.Point(32, 268);
        this.tmsg.Name = "tmsg";
        this.tmsg.Size = new System.Drawing.Size(336, 20);
        this.tmsg.TabIndex = 0;
        this.tmsg.Text = "";
        this.tmsg.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.tmsg_KeyPress);
        // 
        // bsend
        // 
        this.bsend.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
        this.bsend.ForeColor = System.Drawing.Color.OrangeRed;
        this.bsend.Location = new System.Drawing.Point(168, 311);
        this.bsend.Name = "bsend";
        this.bsend.Size = new System.Drawing.Size(64, 24);
        this.bsend.TabIndex = 3;
        this.bsend.Text = "&send";
        this.bsend.Click += new System.EventHandler(this.bsend_Click);
        // 
        // groupBox1
        // 
        this.groupBox1.Controls.Add(this.tchat);
        this.groupBox1.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(178)));
        this.groupBox1.ForeColor = System.Drawing.Color.Black;
        this.groupBox1.Location = new System.Drawing.Point(24, 56);
        this.groupBox1.Name = "groupBox1";
        this.groupBox1.Size = new System.Drawing.Size(352, 176);
        this.groupBox1.TabIndex = 4;
        this.groupBox1.TabStop = false;
        this.groupBox1.Text = "Message Exchange";
        // 
        // tchat
        // 
        this.tchat.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(178)));
        this.tchat.Location = new System.Drawing.Point(16, 24);
        this.tchat.Name = "tchat";
        this.tchat.ScrollBars = System.Windows.Forms.RichTextBoxScrollBars.ForcedVertical;
        this.tchat.Size = new System.Drawing.Size(320, 136);
        this.tchat.TabIndex = 0;
        this.tchat.Text = "";
        // 
        // Message
        // 
        this.Message.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(178)));
        this.Message.ForeColor = System.Drawing.Color.Black;
        this.Message.Location = new System.Drawing.Point(24, 244);
        this.Message.Name = "Message";
        this.Message.Size = new System.Drawing.Size(352, 56);
        this.Message.TabIndex = 5;
        this.Message.TabStop = false;
        this.Message.Text = "Message";
        // 
        // Box1
        // 
        this.Box1.Location = new System.Drawing.Point(299, 3);
        this.Box1.Name = "Box1";
        this.Box1.Size = new System.Drawing.Size(72, 51);
        this.Box1.TabIndex = 6;
        this.Box1.TabStop = false;
        // 
        // Form1
        // 
        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.BackColor = System.Drawing.SystemColors.ControlLightLight;
        this.ClientSize = new System.Drawing.Size(400, 342);
        this.Controls.Add(this.Box1);
        this.Controls.Add(this.bsend);
        this.Controls.Add(this.tmsg);
        //this.Controls.Add(this.axSkin1);
        this.Controls.Add(this.groupBox1);
        this.Controls.Add(this.Message);
        this.Location = new System.Drawing.Point(432, 408);
        this.MaximumSize = new System.Drawing.Size(408, 376);
        this.MinimumSize = new System.Drawing.Size(408, 376);
        this.Name = "Form1";
        this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
        this.Text = "Client";
        this.Closing += new System.ComponentModel.CancelEventHandler(this.Form1_Closing);
        this.Load += new System.EventHandler(this.Form1_Load);
        //((System.ComponentModel.ISupportInitialize)(this.axSkin1)).EndInit();
        this.groupBox1.ResumeLayout(false);
        this.ResumeLayout(false);

    }
    #endregion

    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main() 
    {
        Application.Run(new Form1());
    }

    private void Form1_Load(object sender, System.EventArgs e)
    {
        //axSkin1.ApplySkin((int)Handle);
    }

    //---------------------------------------------------------
    public void RunClient()
    {
        try
        {
            this.Icon=new Icon("1.ico");
            this.Box1.Image=Image.FromFile("1.gif");
        }
        catch(Exception e)
        {
            MessageBox.Show(e.Message);
        }
        try
        {
            tchat.Text="trying to connect to the server";
            // Step 1: create TcpClient and connect to server
            client=new TcpClient();
            client.Connect("LocalHost",20000);
            // Step 2: get NetworkStream associated with TcpClient
            stream=client.GetStream();
            // create objects for writing and reading across stream
            reader=new BinaryReader(stream);
            writer=new BinaryWriter(stream);
            //send welcome to server
            writer.Write("Welcome server");
            tchat.Text+="\r\n Client :Welcome server";
            string reply;
            while(true)
            {
                //step 3: read message from server
                try
                {
                    reply=reader.ReadString();
                    int len=tchat.Text.Length;
                    tchat.AppendText("\r\nServer :"+reply);
                    tchat.Select(len,10+reply.Length);
                    tchat.SelectionColor=Color.Red;
                    tchat.ScrollToCaret();
                }
                //handle execption if the server terminate
                catch(Exception)
                {
                    //step 5:close connection
                    MessageBox.Show("Can not find server..!");
                    reader.Close();
                    writer.Close();
                    stream.Close();
                    client.Close();
                }
            }
        }
        catch(Exception)
        {
            MessageBox.Show(this,"Error while connecting to server",
                this.Text,MessageBoxButtons.OK,
                MessageBoxIcon.Error,
                MessageBoxDefaultButton.Button1);
        }

    }
    private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
    {
        System.Environment.Exit(System.Environment.ExitCode);
    }

    private void tmsg_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
    {
        if(e.KeyChar=='\r'&&client!=null)
        {

            writer.Write(tmsg.Text);
            int len=tchat.TextLength;
            tchat.AppendText("\r\nClient  :"+tmsg.Text);
            tchat.Select(len,10+tmsg.TextLength);
            tchat.SelectionColor=Color.Blue;
            tmsg.Clear();
        }
    }

    private void bsend_Click(object sender, System.EventArgs e)
    {
        if(client!=null)
        {
            writer.Write(tmsg.Text);
            int len=tchat.TextLength;
            tchat.AppendText("\r\nClient  :"+tmsg.Text);
            tchat.Select(len,10+tmsg.TextLength);
            tchat.SelectionColor=Color.Blue;
            tmsg.Clear();
        }

    }
}

public Form1（）
{
//
//需要Windows窗体设计器支持
//
初始化组件（）；
read=新线程（新线程开始（RunClient））；
read.Start（）；
}
/// 
///清理所有正在使用的资源。
/// 
受保护的覆盖无效处置（布尔处置）
{
如果（处置）
{
if（组件！=null）
{
组件。Dispose（）；
}
}
基地。处置（处置）；
}
#区域Windows窗体设计器生成的代码
/// 
///设计器支持所需的方法-不修改
///此方法的内容与代码编辑器一起使用。
/// 
私有void InitializeComponent（）
{
System.Resources.ResourceManager Resources=新的System.Resources.ResourceManager（typeof（Form1））；
//this.axSkin1=新的AxACTIVESKINLib.AxSkin（）；
this.tmsg=new System.Windows.Forms.TextBox（）；
this.bsend=new System.Windows.Forms.Button（）；
this.groupBox1=new System.Windows.Forms.GroupBox（）；
this.tchat=new System.Windows.Forms.RichTextBox（）；
this.Message=new System.Windows.Forms.GroupBox（）；
this.Box1=new System.Windows.Forms.PictureBox（）；
//（（System.ComponentModel.ISupportInitialize）（this.axSkin1））.BeginInit（）；
this.groupBox1.SuspendLayout（）；
这个.SuspendLayout（）；
// 
//axSkin1
// 
//this.axSkin1.Enabled=true；
//this.axSkin1.Location=新系统图点（368272）；
//this.axSkin1.Name=“axSkin1”；
//this.axSkin1.OcxState=（（System.Windows.Forms.AxHost.State）（resources.GetObject（“axSkin1.OcxState”））；
//this.axSkin1.Size=新系统.Drawing.Size（32,32）；
//this.axSkin1.TabIndex=0；
//// 
//tmsg
// 
this.tmsg.ForeColor=System.Drawing.Color.Coral；
this.tmsg.Location=新系统图纸点（32268）；
this.tmsg.Name=“tmsg”；
this.tmsg.Size=新系统图纸尺寸（336,20）；
this.tmsg.TabIndex=0；
this.tmsg.Text=“”；
this.tmsg.KeyPress+=新的System.Windows.Forms.KeyPressEventHandler（this.tmsg_KeyPress）；
// 
//B结束
// 
this.bsend.FlatStyle=System.Windows.Forms.FlatStyle.Flat；
this.bsend.ForeColor=System.Drawing.Color.oranged；
this.bsend.Location=新系统图点（168，311）；
this.bsend.Name=“bsend”；
this.bsend.Size=新系统图尺寸（64,24）；
this.bsend.TabIndex=3；
this.bsend.Text=“&send”；
this.bsend.Click+=新建System.EventHandler（this.bsend\u Click）；
// 
//groupBox1
// 
this.groupBox1.Controls.Add（this.tchat）；
this.groupBox1.Font=new System.Drawing.Font（“Microsoft无衬线”，8.25F，System.Drawing.FontStyle.Regular，System.Drawing.GraphicsUnit.Point，（（System.Byte）（178））；
this.groupBox1.ForeColor=System.Drawing.Color.Black；
this.groupBox1.Location=新系统.图纸.点（24,56）；
this.groupBox1.Name=“groupBox1”；
this.groupBox1.Size=新系统图尺寸（352176）；
this.groupBox1.TabIndex=4；
this.groupBox1.TabStop=false；
this.groupBox1.Text=“消息交换”；
// 
//tchat
// 
this.tchat.Font=new System.Drawing.Font（“Microsoft Sans Serif”，8.25F，System.Drawing.FontStyle.Bold，System.Drawing.GraphicsUnit.Point，（（System.Byte）（178））；
this.tchat.Location=新系统图纸点（16,24）；
this.tchat.Name=“tchat”；
this.tchat.ScrollBars=System.Windows.Forms.RichTextBoxScrollBars.ForcedVertical；
this.tchat.Size=新系统图纸尺寸（320136）；
this.tchat.TabIndex=0；
this.tchat.Text=“”；
// 
//信息
// 
this.Message.Font=new System.Drawing.Font（“Microsoft Sans Serif”，8.25F，System.Drawing.FontStyle.Regular，System.Drawing.GraphicsUnit.Point，（（System.Byte）（178））；
this.Message.ForeColor=System.Drawing.Color.Black；
this.Message.Location=新系统图点（244）；
this.Message.Name=“Message”；
this.Message.Size=新系统.图纸.尺寸（352,56）；
this.Message.TabIndex=5；
this.Message.TabStop=false；
this.Message.Text=“Message”；
// 
//框1
// 
this.Box1.Location=新系统图纸点（299,3）；
this.Box1.Name=“Box1”；
this.Box1.Size=新系统图纸尺寸（72,51）；
this.Box1.TabIndex=6；
this.Box1.TabStop=false；
// 
//表格1
// 
this.AutoScaleBaseSize=新系统.图纸.尺寸（5,13）；
this.BackColor=System.Drawing.SystemColors.controllight；
this.ClientSize=新系统图尺寸（400342）；
this.Controls.Add（this.Box1）；
this.Controls.Add（this.bsend）；
this.Controls.Add（this.tmsg）；
//this.Controls.Add（this.axSkin1）；
this.Controls.Add（this.groupBox1）；
this.Controls.Add（this.Message）；
该位置=新系统图纸点（432408）；
this.MaximumSize=新系统图纸尺寸（408376）；
this.MinimumSize=新系统图纸尺寸（408376）；
this.Name=“Form1”；
this.StartPosition=System.Windows.Forms.FormStartPosition.CenterScreen；
this.Text=“Client”；
this.Closing+=new System.ComponentModel.CancelEventHandler（this.Form1\u Closing）；
此.Load+=新系统