form1.cs

visual c# 网络编程技术与实践实例包括几个源码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net.Mail;

namespace EmailApp
{
    //声明向列表窗体添加字符串的委托
    public delegate void SetMyListBox(string mylistvalue);
    //声明获得信件消息的委托
    public delegate string GetMyMessage();

    public partial class Form1 : Form
    {     
        //初始化字符串共有变量SMTP服务器 POP3服务器 用户名和密码
        public string smtpserver="";
        public string pop3server="";
        public string name="";
        public string password="";

        public Form1()
        {
            InitializeComponent();
        }
        //在文本框改变后使用改变后的数据更新公有变量
        private void pop3Box_TextChanged(object sender, EventArgs e)
        {
            pop3server = pop3Box.Text.ToString();
        }
        private void userBox_TextChanged(object sender, EventArgs e)
        {
            name = nameBox.Text.ToString();
        }
        private void smtpBox_TextChanged(object sender, EventArgs e)
        {
            smtpserver = smtpBox.Text.ToString();
        }
        private void passBox_TextChanged(object sender, EventArgs e)
        {
            password = passBox.Text.ToString();
        }
        private void SendMailBtn_Click(object sender, EventArgs e)
        {
            //若SMTP服务器信息为空 弹出错误对话框 并返回
            if ("" == smtpserver)
            {
                MessageBox.Show("服务器未设置");
                return;
            }

            //若用户名和密码信息为空 弹出错误对话框 并返回
            if (("" == name) || ("" == password))
            {
                MessageBox.Show("用户名和密码不能为空！");
                return;
            }

            //初始化SendMail实例 并将发送邮件所必需的信息作为参数传递进实例
            SendMail form = new SendMail(smtpserver,name,password);
            //显示发送窗体
            form.Show();
        }

        private void ReceMailBtn_Click(object sender, EventArgs e)
        {
            //若POP3服务器信息为空 弹出错误对话框 并返回
            if ("" == pop3server)
            {
                MessageBox.Show("服务器未设置");
                return;
            }
            //若用户名和密码信息为空 弹出错误对话框 并返回
            if (("" == name) || ("" == password))
            {
                MessageBox.Show("用户名和密码不能为空！");
                return;
            }
            //初始化receiveMail实例 并将接收邮件所必需的信息作为参数传递进实例
            receiveMail form = new receiveMail(pop3server,name,password);
            //显示接收窗体
            form.Show();
        }

        private void Form1_Activated(object sender, EventArgs e)
        {
            //设置主窗口文本框中值为Form1类中的相应变量
            pop3Box.Text = pop3server;
            smtpBox.Text = smtpserver;
            nameBox.Text = name;
            passBox.Text = password;
        }
    }
}