关于我的PP0.1聊天软件（客户端）

登陆界面：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Xml;

namespace PP0._1
{
    public partial class Login : Form
    {
        public Login()
        {
            InitializeComponent();
        }
        public static String ip;
        public static int port;
        bool formMove = false;//窗体是否移动
        Point formPoint;//记录窗体的位置
        private void Login_Load(object sender, EventArgs e)
        {
            initServiseInfo();
        }
        public void initServiseInfo()
        {
            XmlDocument doc = new XmlDocument();
            doc.Load("ServiseInfo.xml");
            XmlNode root = doc.DocumentElement;
            foreach(XmlNode item in root.ChildNodes){
                switch (item.Name)
                {
                    case "ip":
                        ip = item.InnerText;
                        break;
                    case "port":
                        port = Convert.ToInt32(item.InnerText);
                        break;
                }
            }
        }

        private void btnLogin_Click(object sender, EventArgs e)
        {
            LoginNow();
        }
        public void LoginNow()
        {
            if (txtName.Text!="" && txtPwd.Text!="")
            {
                byte[] byteOrder = new byte[1024];
                String userInfo = "name:" + txtName.Text + "pwd:" + txtPwd.Text + "type:1";//1为登陆
                Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                socket.Connect(new IPEndPoint(IPAddress.Parse(ip), port));
                socket.Send(Encoding.ASCII.GetBytes(userInfo));
                String order = Encoding.ASCII.GetString(byteOrder, 0, socket.Receive(byteOrder));
                if (order == "loginSucceed")
                {
                    this.Hide();
                    PPMian main = new PPMian();
                    main.Show();
                }
                else if (order == "noUser")
                {
                    DialogResult result = MessageBox.Show("未存在此用户，是否跳转，注册页面？", "", MessageBoxButtons.YesNo);
                    if (result == DialogResult.Yes)
                    {
                        this.Hide();
                        Register register = new Register();
                        register.Show();
                    }
                }
                else if (order=="pwdErro")
                {
                    MessageBox.Show("密码错误");
                }
            }
            else if (txtName.Text=="")
            {
                MessageBox.Show("用户名不能为空");
            }
            else if (txtPwd.Text=="")
            {
                MessageBox.Show("密码不能为空");
            }
           
        }

        private void linkLabRegister_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            Register register = new Register();
            register.Show();
            this.Hide();
        }

        private void labLogin_Click(object sender, EventArgs e)
        {

        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {

        }
        
        private void Login_MouseDown(object sender, MouseEventArgs e)
        {
            formPoint = new Point();
            int xOffset;
            int yOffset;
            if (e.Button == MouseButtons.Left)
            {
                xOffset = -e.X - SystemInformation.FrameBorderSize.Width;
                yOffset = -e.Y - SystemInformation.CaptionHeight - SystemInformation.FrameBorderSize.Height;
                formPoint = new Point(xOffset, yOffset);
                formMove = true;//开始移动
            }
        }

        private void Login_MouseMove(object sender, MouseEventArgs e)
        {
            if (formMove == true)
            {
                Point mousePos = Control.MousePosition;
                mousePos.Offset(formPoint.X, formPoint.Y);
                Location = mousePos;
            }
        }

        private void Login_MouseUp(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)//按下的是鼠标左键
            {
                formMove = false;//停止移动
            }
        }

        private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)//按下的是鼠标左键
            {
                formMove = false;//停止移动
            }
        }

        private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
            if (formMove == true)
            {
                Point mousePos = Control.MousePosition;
                mousePos.Offset(formPoint.X, formPoint.Y);
                Location = mousePos;
            }
        }

        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
        {
            formPoint = new Point();
            int xOffset;
            int yOffset;
            if (e.Button == MouseButtons.Left)
            {
                xOffset = -e.X - SystemInformation.FrameBorderSize.Width;
                yOffset = -e.Y - SystemInformation.CaptionHeight - SystemInformation.FrameBorderSize.Height;
                formPoint = new Point(xOffset, yOffset);
                formMove = true;//开始移动
            }
        }

        private void btnExit_Click(object sender, EventArgs e)
        {
            DialogResult result= MessageBox.Show("是否确定退出？","",MessageBoxButtons.YesNo);
            if (result==DialogResult.Yes)
            {
                System.Environment.Exit(0);
            }
        }
    }
}

 读取xml文件，获取ip和端口

public void initServiseInfo()
{
XmlDocument doc = new XmlDocument();
doc.Load("ServiseInfo.xml");
XmlNode root = doc.DocumentElement;
foreach(XmlNode item in root.ChildNodes){
switch (item.Name)
{
case "ip":
ip = item.InnerText;
break;
case "port":
port = Convert.ToInt32(item.InnerText);
break;
}
}
}

登陆的判断操作

public void LoginNow()
{
if (txtName.Text!="" && txtPwd.Text!="")
{
byte[] byteOrder = new byte[1024];
String userInfo = "name:" + txtName.Text + "pwd:" + txtPwd.Text + "type:1";//1为登陆
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
socket.Connect(new IPEndPoint(IPAddress.Parse(ip), port));
socket.Send(Encoding.ASCII.GetBytes(userInfo));
String order = Encoding.ASCII.GetString(byteOrder, 0, socket.Receive(byteOrder));
if (order == "loginSucceed")
{
this.Hide();
PPMian main = new PPMian();
main.Show();
}
else if (order == "noUser")
{
DialogResult result = MessageBox.Show("未存在此用户，是否跳转，注册页面？", "", MessageBoxButtons.YesNo);
if (result == DialogResult.Yes)
{
this.Hide();
Register register = new Register();
register.Show();
}
}
else if (order=="pwdErro")
{
MessageBox.Show("密码错误");
}
}
else if (txtName.Text=="")
{
MessageBox.Show("用户名不能为空");
}
else if (txtPwd.Text=="")
{
MessageBox.Show("密码不能为空");
}

}

注册界面：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace PP0._1
{
    public partial class Register : Form
    {
        public Register()
        {
            InitializeComponent();
        }
        bool formMove = false;//窗体是否移动
        Point formPoint;//记录窗体的位置
        private void Register_MouseDown(object sender, MouseEventArgs e)
        {
            formPoint = new Point();
            int xOffset;
            int yOffset;
            if (e.Button == MouseButtons.Left)
            {
                xOffset = -e.X - SystemInformation.FrameBorderSize.Width;
                yOffset = -e.Y - SystemInformation.CaptionHeight - SystemInformation.FrameBorderSize.Height;
                formPoint = new Point(xOffset, yOffset);
                formMove = true;//开始移动
            }
        }

        private void Register_MouseMove(object sender, MouseEventArgs e)
        {
            if (formMove == true)
            {
                Point mousePos = Control.MousePosition;
                mousePos.Offset(formPoint.X, formPoint.Y);
                Location = mousePos;
            }
        }

        private void Register_MouseUp(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)//按下的是鼠标左键
            {
                formMove = false;//停止移动
            }
        }

        private void btnCancle_Click(object sender, EventArgs e)
        {
            this.Hide();
            Login login = new Login();
            login.Show();
        }

        private void btnRegister_Click(object sender, EventArgs e)
        {
            RegisterNow();
        }
        public void RegisterNow()
        {
            if (txtName.Text!="" && txtPwd.Text!="")
            {
                byte[] byteOrder=new byte[1024];
                String userInfo = "name:" + txtName.Text + "pwd" + txtPwd.Text+"type:2";//2为注册
                Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                socket.Connect(new IPEndPoint(IPAddress.Parse(Login.ip), Login.port));
                socket.Send(Encoding.ASCII.GetBytes(userInfo));
                String order;
                order = Encoding.ASCII.GetString(byteOrder,0,socket.Receive(byteOrder));
                if (order == "registerSucceed")
                {
                    MessageBox.Show("注册成功");
                    Login login = new Login();
                    this.Hide();
                    login.Show();
                }
                else if (order=="userLess")
                {
                    MessageBox.Show("用户名重名，请重新注册");
                }
            }else if(txtName.Text==""){
                MessageBox.Show("用户名不能为空");
            }
            else if (txtPwd.Text=="")
            {
                MessageBox.Show("密码不能为空");
            }
            
        }
        private void Register_Load(object sender, EventArgs e)
        {

        }
    }
}