实例介绍
【实例简介】
C#接收邮件示例
【实例截图】
【核心代码】
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.Sockets;
using System.IO;
namespace PopEmailManager
{
public partial class Form1 : Form
{
public TcpClient Server;
public StreamReader sr;
public StreamWriter sw;
public string Data, content;
public string CRLF = "\r\n";
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
this.listBox1.Items.Clear();
this.listBox2.Items.Clear();
try
{
Server = new TcpClient(this.textBox1.Text, 110);
sr = new StreamReader(Server.GetStream(), System.Text.Encoding.ASCII);
sw = new StreamWriter(Server.GetStream(), System.Text.Encoding.ASCII);
this.listBox2.Items.Add(sr.ReadLine());
Data = "USER " this.textBox2.Text;
sw.WriteLine(Data);
sw.Flush();
this.listBox2.Items.Add(sr.ReadLine());
Data = "PASS " this.textBox3.Text;
sw.WriteLine(Data);
sw.Flush();
this.listBox2.Items.Add(sr.ReadLine());
Data = "STAT";
sw.WriteLine(Data);
sw.Flush();
string str = sr.ReadLine();
this.listBox2.Items.Add(str);
str = str.Substring(4, str.IndexOf(" ", 5) - 4);
int count = Int32.Parse(str);
if (count > 0)
{
this.listBox1.Enabled = true;
this.button4.Enabled = true;
this.button3.Enabled = true;
this.listBox1.Items.Clear();
for (int i = 0; i < count; i )
{
this.listBox1.Items.Add("第" (i 1) "封邮件");
}
this.listBox1.SelectedIndex = 0;
}
else
{
this.listBox1.Items.Add("没有新邮件");
this.listBox1.Enabled = false;
this.button3.Enabled = false;
this.button4.Enabled = false;
}
this.button1.Enabled = false;
this.button2.Enabled = true;
}
catch
{
this.listBox2.Items.Add("有错误发生,请检查");
Server.Close();
sw.Close();
sr.Close();
this.button3.Enabled = false;
this.button4.Enabled = false;
button1.Enabled = true;
button2.Enabled = false;
}
}
private void button2_Click(object sender, EventArgs e)
{
try
{
Data = "QUIT";
sw.WriteLine(Data);
sw.Flush();
this.listBox2.Items.Add(sr.ReadLine());
sw.Close();
sr.Close();
this.richTextBox1.Clear();
this.listBox1.Items.Clear();
this.listBox1.Enabled = false;
this.button3.Enabled = false;
this.button4.Enabled = false;
button1.Enabled = true;
button2.Enabled = false;
Server.Close();
}
catch
{
sw.Close();
sr.Close();
this.richTextBox1.Clear();
this.listBox1.Items.Clear();
this.listBox1.Enabled = false;
this.button3.Enabled = false;
this.button4.Enabled = false;
button1.Enabled = true;
button2.Enabled = false;
Server.Close();
}
}
private void button3_Click(object sender, EventArgs e)
{
String strTemp;
content = "";
this.richTextBox1.Clear();
try
{
string str = this.listBox1.SelectedItem.ToString();
str = str.Substring(1, str.IndexOf("封") - 1);
Data = "RETR " str;
sw.WriteLine(Data);
sw.Flush();
strTemp = sr.ReadLine();
if (strTemp[0] != '-')
{
while (strTemp != ".")
{
content = strTemp CRLF;
strTemp = sr.ReadLine();
}
}
else
{
this.listBox2.Items.Add(strTemp);
}
char[] seperator = { '\n' };
string[] str1 = content.Trim().Split(seperator);
for (int i = 0; i <= 9; i )
{
if (str1.Length != 0)
{
if (str1[0].Substring(0, 2).ToLower() == "to")
{
this.richTextBox1.Text = "发送到" str1[0].Substring(2, str1.Length - 2);
}
if (str1[1].Substring(0, 4).ToLower() == "from")
{
this.richTextBox1.Text = "来自" str1[1].Substring(4, str1.Length - 4);
}
if (str1[2].Substring(0, 7).ToLower() == "subject")
{
this.richTextBox1.Text = "标题" str1[20].Substring(7, str1.Length - 7);
}
if (str1[3].Substring(0, 4).ToLower() == "date")
{
this.richTextBox1.Text = "日期" str1[3].Substring(4, str1.Length - 4);
}
}
}
this.richTextBox1.Text = "内容: " CRLF;
for (int j = 12; j < str1.Length; j )
{
if (str1[j].Trim().Length != 0)
{
this.richTextBox1.Text = str1[j];
}
}
}
catch
{
this.listBox2.Items.Add("ERROR!");
}
}
private void button4_Click(object sender, EventArgs e)
{
this.richTextBox1.Clear();
try
{
string str = this.listBox1.SelectedItem.ToString();
str = str.Substring(1, str.IndexOf("封") - 1);
Data = "DELE " str;
sw.WriteLine(Data);
sw.Flush();
this.listBox2.Items.Add(sr.ReadLine());
int i = this.listBox1.SelectedIndex;
this.listBox1.Items.Remove(this.listBox1.Items.ToString());
MessageBox.Show("删除成功", "操作成功");
}
catch
{
this.listBox1.Items.Add("ERROR!");
}
}
public static string FromUnicodeByteArray(byte[] characters)
{
UnicodeEncoding encoding = new UnicodeEncoding();
string constructedString = encoding.GetString(characters);
return (constructedString);
}
public static string FromASCIIByteArray(byte[] characters)
{
ASCIIEncoding encoding = new ASCIIEncoding();
string constructedString = encoding.GetString(characters);
return (constructedString);
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
try
{
sr.Close();
sw.Close();
Server.Close();
}
catch
{
}
}
}
}
标签: 邮件
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