一、 POP3协议简介 1、什么是POP3协议:
邮局协议（Post Office Protocol，简称POP）是TCP/IP协议族中的一员，由RFC 1939 定义。本协议主要用于支持使用客户端远程管理在服务器上的电子邮件。最新版本为POP3，全名“Post Office Protocol - Version 3”，而提供了SSL加密的POP3协议被称为POP3S。
2、POP3协议具体过程：
POP 协议支持“离线”邮件处理。其具体过程是：邮件发送到服务器上，电子邮件客户端调用邮件客户机程序以连接服务器，并下载所有未阅读的电子邮件。这种离线访问模式是一种存储转发服务，将邮件从邮件服务器端送到个人终端机器上，一般是PC机或 MAC。一旦邮件发送到 PC 机或MAC上，邮件服务器上的邮件将会被删除。但目前的POP3邮件服务器大都可以“只下载邮件，服务器端并不删除”，也就是改进的POP3协议。
3、电子邮件系统的基本网络结构
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二、 运用C#实现POP3接收邮件的三种方法 【C#利用Lumisoft组件实现收邮解析邮件功能】1、 利用Socket组件
socket本质是编程接口，是对TCP/IP的封装。TCP/IP是传输层的协议。POP3是应用层的协议，是基于TCP/IP协议的。所以，使用socket实现上述几种协议的客户端，其实是对借助socket对TCP/IP数据传输的封装基础，再往上封装一层的。
POP3只需要建立一个连接，客户端向服务器发命令，服务器向客户端返回数据就行了。具体就是通过socket发命令，再通过socket接数据 。
具体实现如下图（实现代码不再详细阐述）：
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该POP3客户端主要实现的就是接收邮件功能了，然而并没有实现邮件内容解析功能。
并且在连接过程中，163、126、sina等邮箱均可以登录至相应的pop服务器，唯独QQ邮箱受阻，提示信息为：-err login fail a secure connection is required(such as ssl)，所以需要建立ssl的相关安全连接才可以登录至pop服务器，因此放弃该方法，所以选择方法三。
2、 利用OpenPop组件
这是一款可以支持 SSL 收发邮件的控件，和LumiSoft组件类似，自己在使用LumiSoft之前对OpenPop组件进行了测试，其中邮件解析的各项数据较全。但是OpenSmtp组件连接不了ssl，这个只对pop协议适用，而LumiSoft对所有的邮件传输协议均适用，所以选择了方法三。
运行效果如下图：
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3、 利用LumiSoft组件
LumiSoft.Net是非常强大的开源组件，不仅仅发送邮件，同样也可用于接收邮件，在这周的学习时间里是个人找到的最好的开源组件了。阅读LumiSoft.Net的源代码，可以看到LumiSoft.Net编程严格遵循了RFC（Request For Comments）定义的协议规范。通过阅读这些源码对于了解RFC和其中关于邮件网络协议规范也是非常有帮助的。
如果要查阅RFC文档可以通过LumiSoft组件链接网站查询。
运行效果如下图：
主界面：
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解析：
文章图片
三、 运用LumiSoft组件实现接收邮件 1、 运用的命名空间
using System
using System.Windows.Forms;
using System.IO;
using LumiSoft.Net;
using LumiSoft.Net.Mail;
using LumiSoft.Net.POP3.Client;
using LumiSoft.Net.MIME;
2、 连接并获取信息部分
（1）、连接到POP3服务器
POP3_Client.Connect函数主要是连接pop服务器，端口，是否用ssl
POP3_Client.Authenticate函数主要验证邮箱和邮箱授权码（通常为16位）
private void btn_connect_Click(object sender, EventArgs e)
{
if (txt_username.Text == "")
{
MessageBox.Show(this, "Please fill user name !", "Error:", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}POP3_Client pop3 = new POP3_Client();
try
{
pop3.Connect(txt_server.Text, (int)number_port.Value, cb_isSSL.Checked);
pop3.Authenticate(txt_username.Text, txt_password.Text, true);
m_pPop3 = pop3;
this.DialogResult = DialogResult.OK;
FillMessagesList();
}
catch (Exception x)
{
MessageBox.Show(this, "POP3 server returned: " + x.Message + " !", "Error:", MessageBoxButtons.OK, MessageBoxIcon.Error);
pop3.Dispose();
}
}
（2）、获取邮件头信息函数FillMessagesList()
通过POP3_ClientMessage、Mail_Message获取信息，并写进ListViewItem的项内，然后传递给lst_message的Item，以达到在窗体中显示的目的。
private void FillMessagesList()
{
this.Cursor = Cursors.WaitCursor;
try
{
foreach (POP3_ClientMessage message in m_pPop3.Messages)
{
Mail_Message mime = Mail_Message.ParseFromByte(message.HeaderToByte());
Mail_Message mime2 = Mail_Message.ParseFromByte(message.MessageToByte());
ListViewItem item = new ListViewItem();
if (mime.From != null)
{
item.Text = mime.From.ToString();
}
else
{
item.Text = "";
}if (string.IsNullOrEmpty(mime.Subject))
{
item.SubItems.Add("");
}
else
{
item.SubItems.Add(mime.Subject);
}
item.SubItems.Add(mime.Date.ToString());
item.SubItems.Add(((decimal)(message.Size / (decimal)1000)).ToString("f2") + " kb");
if (mime.Cc != null)
{
item.SubItems.Add(Convert.ToString(mime.Cc));
}
else
{
item.SubItems.Add("");
}
if (mime.Bcc != null)
{
item.SubItems.Add(Convert.ToString(mime.Bcc));
}
else
{
item.SubItems.Add("");
}
item.SubItems.Add(mime.ContentTransferEncoding);
item.SubItems.Add(mime.MessageID);
item.SubItems.Add(mime.MimeVersion);
item.SubItems.Add(Convert.ToString(mime.Received));
item.SubItems.Add(mime2.BodyHtmlText);
item.SubItems.Add(Convert.ToString(mime.ContentType));
item.SubItems.Add(Convert.ToString(mime.IsDisposed));
item.SubItems.Add(Convert.ToString(mime.IsModified));
item.Tag = message;
lst_messages.Items.Add(item);
}
}
catch (Exception x)
{
MessageBox.Show(this, "Error: " + x.Message, "Error:", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
this.Cursor = Cursors.Default;
}
（3）、SSL判断函数
通过WellKnownPorts方法自动获取各个邮件服务器所在ssl或者非ssl状态下对应的端口。
private void cb_isSSL_CheckedChanged_1(object sender, EventArgs e)
{
if (cb_isSSL.Checked)
{
number_port.Value = https://www.it610.com/article/WellKnownPorts.POP3_SSL;
}
else
{
number_port.Value = WellKnownPorts.POP3;
}
}3、 通过窗体获取具体解析的信息部分
（1）、邮件列表内点击行为
通过点击邮件列表内的邮件项这一选择行为，会相应地在下面附件栏和正文栏显示出对应的信息，并把邮件头解析信息返回至txt_Header，其中用到了POP3_ClientMessage、Mail_Message、MIME_Entity方法。
private void lst_messages_SelectedIndexChanged(object sender, EventArgs e)
{
this.Cursor = Cursors.WaitCursor;
try
{
toolStrip1.Items["save"].Enabled = false;
toolStrip1.Items["delete"].Enabled = false;
if (lst_messages.SelectedItems.Count > 0)
{
lst_attachment.Items.Clear();
txt_Body.Text = "";
POP3_ClientMessage message = (POP3_ClientMessage)lst_messages.SelectedItems[0].Tag;
Mail_Message mime = Mail_Message.ParseFromByte(message.MessageToByte());
string Sender = mime.From == null ? "Sender is null" : mime.From[0].DisplayName;
string senderAddress = mime.From == null ? "senderAddress is null" : mime.From[0].Address;
string subject = mime.Subject ?? "subject is null";
string recDate = mime.Date == DateTime.MinValue ? "date not specified" : mime.Date.ToString();
string content = mime.BodyText ?? "content is null";
foreach (MIME_Entity entity in mime.Attachments)
{
ListViewItem item = new ListViewItem();
if (entity.ContentDisposition != null && entity.ContentDisposition.Param_FileName != null)
{
item.Text = entity.ContentDisposition.Param_FileName;
}
else
{
item.Text = "untitled";
}
item.Tag = entity;
lst_attachment.Items.Add(item);
}if (mime.BodyText != null)
{
txt_Body.Text = mime.BodyText;
}
if (mime.Header != null)
{
txt_Header.Text = Convert.ToString(mime.Header);
}
toolStrip1.Items["save"].Enabled = true;
toolStrip1.Items["delete"].Enabled = true;
}
}
catch (Exception x)
{
MessageBox.Show(this, "Error: " + x.Message, "Error:", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
this.Cursor = Cursors.Default;
}
（2）、邮件列表内保存及删除行为
在toolStrip上生成两个button，分别对应保存及删除。
private void toolStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
if (string.Equals(e.ClickedItem.Name, "save"))
{
SaveFileDialog dlg = new SaveFileDialog();
dlg.FileName = "message.eml";
if (dlg.ShowDialog() == DialogResult.OK)
{
this.Cursor = Cursors.WaitCursor;
POP3_ClientMessage message = (POP3_ClientMessage)lst_messages.SelectedItems[0].Tag;
File.WriteAllBytes(dlg.FileName, message.MessageToByte());
this.Cursor = Cursors.Default;
}
}
else if (string.Equals(e.ClickedItem.Name, "delete"))
{
if (MessageBox.Show(this, "Do you want to delete selected message ?", "Confirm Delete:", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
POP3_ClientMessage message = (POP3_ClientMessage)lst_messages.SelectedItems[0].Tag;
message.MarkForDeletion();
lst_messages.SelectedItems[0].Remove();
}
}
}（3）、附件列表内点击行为
通过鼠标右键点击“Save”可以把附件下载至本地
1、右键点击生成菜单函数：
private void lst_attachment_MouseClick(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right && lst_attachment.SelectedItems.Count > 0)
{
ContextMenuStrip menu = new ContextMenuStrip();
menu.Items.Add("Save");
menu.ItemClicked += new ToolStripItemClickedEventHandler(menu_ItemClicked);
menu.Show(Control.MousePosition);
}
}2、点击“Save”保存函数：
private void menu_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
MIME_Entity entity = (MIME_Entity)lst_attachment.SelectedItems[0].Tag;
SaveFileDialog dlg = new SaveFileDialog();
dlg.FileName = lst_attachment.SelectedItems[0].Text;
if (dlg.ShowDialog(this) == DialogResult.OK)
{
File.WriteAllBytes(dlg.FileName, ((MIME_b_SinglepartBase)entity.Body).Data);
}
}
Mail.Designer.cs
namespace POP_Email
{
partial class Mail
{
///
/// 必需的设计器变量。
///
private System.ComponentModel.IContainer components = null;
///
/// 清理所有正在使用的资源。
///
/// 如果应释放托管资源，为 true；否则为 false。
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}#region Windows 窗体设计器生成的代码///
/// 设计器支持所需的方法 - 不要修改
/// 使用代码编辑器修改此方法的内容。
///
private void InitializeComponent()
{
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Mail));
this.delete = new System.Windows.Forms.ToolStripButton();
this.save = new System.Windows.Forms.ToolStripButton();
this.columnHeader4 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader3 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader2 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader1 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.tabControl1 = new System.Windows.Forms.TabControl();
this.tabPage1 = new System.Windows.Forms.TabPage();
this.label6 = new System.Windows.Forms.Label();
this.label5 = new System.Windows.Forms.Label();
this.txt_Body = new System.Windows.Forms.TextBox();
this.lst_attachment = new System.Windows.Forms.ListView();
this.lst_messages = new System.Windows.Forms.ListView();
this.columnHeader5 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader6 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader7 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader10 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader8 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader9 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader11 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader12 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader16 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.columnHeader17 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.toolStrip1 = new System.Windows.Forms.ToolStrip();
this.label1 = new System.Windows.Forms.Label();
this.number_port = new System.Windows.Forms.NumericUpDown();
this.label2 = new System.Windows.Forms.Label();
this.txt_password = new System.Windows.Forms.TextBox();
this.label4 = new System.Windows.Forms.Label();
this.txt_username = new System.Windows.Forms.TextBox();
this.label3 = new System.Windows.Forms.Label();
this.btn_cancel = new System.Windows.Forms.Button();
this.btn_connect = new System.Windows.Forms.Button();
this.cb_isSSL = new System.Windows.Forms.CheckBox();
this.txt_server = new System.Windows.Forms.TextBox();
this.skinEngine1 = new Sunisoft.IrisSkin.SkinEngine(((System.ComponentModel.Component)(this)));
this.tabPage2 = new System.Windows.Forms.TabPage();
this.txt_Header = new System.Windows.Forms.TextBox();
this.tabControl1.SuspendLayout();
this.tabPage1.SuspendLayout();
this.toolStrip1.SuspendLayout();
((System.ComponentModel.ISupportInitialize)(this.number_port)).BeginInit();
this.tabPage2.SuspendLayout();
this.SuspendLayout();
//
// delete
//
this.delete.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image;
this.delete.Image = ((System.Drawing.Image)(resources.GetObject("delete.Image")));
this.delete.ImageTransparentColor = System.Drawing.Color.Magenta;
this.delete.Name = "delete";
this.delete.RightToLeft = System.Windows.Forms.RightToLeft.No;
this.delete.Size = new System.Drawing.Size(23, 29);
this.delete.Tag = "delete";
this.delete.Text = "Delete";
//
// save
//
this.save.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image;
this.save.Image = ((System.Drawing.Image)(resources.GetObject("save.Image")));
this.save.ImageTransparentColor = System.Drawing.Color.Magenta;
this.save.Name = "save";
this.save.Size = new System.Drawing.Size(23, 29);
this.save.Tag = "save";
this.save.Text = "Save";
//
// columnHeader4
//
this.columnHeader4.Text = "大小";
this.columnHeader4.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
this.columnHeader4.Width = 115;
//
// columnHeader3
//
this.columnHeader3.Text = "时间";
this.columnHeader3.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
this.columnHeader3.Width = 121;
//
// columnHeader2
//
this.columnHeader2.Text = "主题";
this.columnHeader2.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
this.columnHeader2.Width = 200;
//
// columnHeader1
//
this.columnHeader1.Text = "发件人";
this.columnHeader1.Width = 131;
//
// tabControl1
//
this.tabControl1.Controls.Add(this.tabPage1);
this.tabControl1.Controls.Add(this.tabPage2);
this.tabControl1.Location = new System.Drawing.Point(15, 89);
this.tabControl1.Name = "tabControl1";
this.tabControl1.SelectedIndex = 0;
this.tabControl1.Size = new System.Drawing.Size(860, 538);
this.tabControl1.TabIndex = 35;
//
// tabPage1
//
this.tabPage1.Controls.Add(this.label6);
this.tabPage1.Controls.Add(this.label5);
this.tabPage1.Controls.Add(this.txt_Body);
this.tabPage1.Controls.Add(this.lst_attachment);
this.tabPage1.Controls.Add(this.lst_messages);
this.tabPage1.Controls.Add(this.toolStrip1);
this.tabPage1.Location = new System.Drawing.Point(4, 22);
this.tabPage1.Name = "tabPage1";
this.tabPage1.Padding = new System.Windows.Forms.Padding(3);
this.tabPage1.Size = new System.Drawing.Size(852, 512);
this.tabPage1.TabIndex = 0;
this.tabPage1.Text = "接收端";
this.tabPage1.UseVisualStyleBackColor = true;
//
// label6
//
this.label6.AutoSize = true;
this.label6.Location = new System.Drawing.Point(3, 335);
this.label6.Name = "label6";
this.label6.Size = new System.Drawing.Size(41, 12);
this.label6.TabIndex = 5;
this.label6.Text = "正文：";
//
// label5
//
this.label5.AutoSize = true;
this.label5.Location = new System.Drawing.Point(3, 237);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(41, 12);
this.label5.TabIndex = 4;
this.label5.Text = "附件：";
this.label5.Click += new System.EventHandler(this.label5_Click);
//
// txt_Body
//
this.txt_Body.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.txt_Body.Location = new System.Drawing.Point(5, 359);
this.txt_Body.Multiline = true;
this.txt_Body.Name = "txt_Body";
this.txt_Body.ScrollBars = System.Windows.Forms.ScrollBars.Both;
this.txt_Body.Size = new System.Drawing.Size(841, 136);
this.txt_Body.TabIndex = 3;
//
// lst_attachment
//
this.lst_attachment.Location = new System.Drawing.Point(3, 252);
this.lst_attachment.Name = "lst_attachment";
this.lst_attachment.Size = new System.Drawing.Size(844, 67);
this.lst_attachment.TabIndex = 2;
this.lst_attachment.UseCompatibleStateImageBehavior = false;
this.lst_attachment.View = System.Windows.Forms.View.SmallIcon;
this.lst_attachment.MouseClick += new System.Windows.Forms.MouseEventHandler(this.lst_attachment_MouseClick_2);
//
// lst_messages
//
this.lst_messages.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.lst_messages.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
this.columnHeader1,
this.columnHeader2,
this.columnHeader3,
this.columnHeader4,
this.columnHeader5,
this.columnHeader6,
this.columnHeader7,
this.columnHeader10,
this.columnHeader8,
this.columnHeader9,
this.columnHeader11,
this.columnHeader12,
this.columnHeader16,
this.columnHeader17});
this.lst_messages.FullRowSelect = true;
this.lst_messages.HideSelection = false;
this.lst_messages.Location = new System.Drawing.Point(5, 38);
this.lst_messages.MultiSelect = false;
this.lst_messages.Name = "lst_messages";
this.lst_messages.Size = new System.Drawing.Size(844, 186);
this.lst_messages.TabIndex = 1;
this.lst_messages.UseCompatibleStateImageBehavior = false;
this.lst_messages.View = System.Windows.Forms.View.Details;
this.lst_messages.SelectedIndexChanged += new System.EventHandler(this.lst_messages_SelectedIndexChanged_2);
//
// columnHeader5
//
this.columnHeader5.Text = "抄送";
this.columnHeader5.Width = 114;
//
// columnHeader6
//
this.columnHeader6.Text = "密送";
this.columnHeader6.Width = 97;
//
// columnHeader7
//
this.columnHeader7.Text = "编码";
//
// columnHeader10
//
this.columnHeader10.Text = "MessageID";
this.columnHeader10.Width = 300;
//
// columnHeader8
//
this.columnHeader8.Text = "MimeVersion";
this.columnHeader8.Width = 200;
//
// columnHeader9
//
this.columnHeader9.Text = "Received";
this.columnHeader9.Width = 200;
//
// columnHeader11
//
this.columnHeader11.Text = "BodyHtmlText";
this.columnHeader11.Width = 200;
//
// columnHeader12
//
this.columnHeader12.Text = "ContentType";
this.columnHeader12.Width = 200;
//
// columnHeader16
//
this.columnHeader16.Text = "IsDisposed";
this.columnHeader16.Width = 200;
//
// columnHeader17
//
this.columnHeader17.Text = "IsModified";
this.columnHeader17.Width = 200;
//
// toolStrip1
//
this.toolStrip1.AutoSize = false;
this.toolStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
this.save,
this.delete});
this.toolStrip1.Location = new System.Drawing.Point(3, 3);
this.toolStrip1.Name = "toolStrip1";
this.toolStrip1.Size = new System.Drawing.Size(846, 32);
this.toolStrip1.TabIndex = 0;
this.toolStrip1.Text = "tool_Messages";
this.toolStrip1.ItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler(this.toolStrip1_ItemClicked);
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(10, 17);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(53, 12);
this.label1.TabIndex = 24;
this.label1.Text = "服务器：";
//
// number_port
//
this.number_port.Location = new System.Drawing.Point(50, 51);
this.number_port.Maximum = new decimal(new int[] {
1000,
0,
0,
0});
this.number_port.Name = "number_port";
this.number_port.Size = new System.Drawing.Size(43, 21);
this.number_port.TabIndex = 27;
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(13, 55);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(41, 12);
this.label2.TabIndex = 26;
this.label2.Text = "端口：";
//
// txt_password
//
this.txt_password.Location = new System.Drawing.Point(553, 12);
this.txt_password.Name = "txt_password";
this.txt_password.PasswordChar = '*';
this.txt_password.Size = new System.Drawing.Size(211, 21);
this.txt_password.TabIndex = 31;
//
// label4
//
this.label4.AutoSize = true;
this.label4.Location = new System.Drawing.Point(518, 15);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(41, 12);
this.label4.TabIndex = 30;
this.label4.Text = "密码：";
//
// txt_username
//
this.txt_username.Location = new System.Drawing.Point(306, 12);
this.txt_username.Name = "txt_username";
this.txt_username.Size = new System.Drawing.Size(195, 21);
this.txt_username.TabIndex = 29;
//
// label3
//
this.label3.AutoSize = true;
this.label3.Location = new System.Drawing.Point(256, 15);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(53, 12);
this.label3.TabIndex = 28;
this.label3.Text = "用户名：";
//
// btn_cancel
//
this.btn_cancel.Location = new System.Drawing.Point(477, 49);
this.btn_cancel.Name = "btn_cancel";
this.btn_cancel.Size = new System.Drawing.Size(73, 21);
this.btn_cancel.TabIndex = 34;
this.btn_cancel.Text = "取消";
this.btn_cancel.UseVisualStyleBackColor = true;
this.btn_cancel.Click += new System.EventHandler(this.btn_cancel_Click_1);
//
// btn_connect
//
this.btn_connect.Location = new System.Drawing.Point(383, 49);
this.btn_connect.Name = "btn_connect";
this.btn_connect.Size = new System.Drawing.Size(73, 21);
this.btn_connect.TabIndex = 33;
this.btn_connect.Text = "连接";
this.btn_connect.UseVisualStyleBackColor = true;
this.btn_connect.Click += new System.EventHandler(this.btn_connect_Click);
//
// cb_isSSL
//
this.cb_isSSL.AutoSize = true;
this.cb_isSSL.Location = new System.Drawing.Point(127, 52);
this.cb_isSSL.Name = "cb_isSSL";
this.cb_isSSL.Size = new System.Drawing.Size(66, 16);
this.cb_isSSL.TabIndex = 32;
this.cb_isSSL.Text = "使用SSL";
this.cb_isSSL.UseVisualStyleBackColor = true;
this.cb_isSSL.CheckedChanged += new System.EventHandler(this.cb_isSSL_CheckedChanged_1);
//
// txt_server
//
this.txt_server.Location = new System.Drawing.Point(61, 12);
this.txt_server.Name = "txt_server";
this.txt_server.Size = new System.Drawing.Size(179, 21);
this.txt_server.TabIndex = 25;
//
// skinEngine1
//
this.skinEngine1.SerialNumber = "";
this.skinEngine1.SkinFile = null;
//
// tabPage2
//
this.tabPage2.Controls.Add(this.txt_Header);
this.tabPage2.Location = new System.Drawing.Point(4, 22);
this.tabPage2.Name = "tabPage2";
this.tabPage2.Size = new System.Drawing.Size(852, 418);
this.tabPage2.TabIndex = 1;
this.tabPage2.Text = "Header";
this.tabPage2.UseVisualStyleBackColor = true;
//
// txt_Header
//
this.txt_Header.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.txt_Header.Location = new System.Drawing.Point(6, 3);
this.txt_Header.Multiline = true;
this.txt_Header.Name = "txt_Header";
this.txt_Header.ScrollBars = System.Windows.Forms.ScrollBars.Both;
this.txt_Header.Size = new System.Drawing.Size(841, 550);
this.txt_Header.TabIndex = 7;
//
// Mail
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(904, 644);
this.Controls.Add(this.tabControl1);
this.Controls.Add(this.label1);
this.Controls.Add(this.number_port);
this.Controls.Add(this.label2);
this.Controls.Add(this.txt_password);
this.Controls.Add(this.label4);
this.Controls.Add(this.txt_username);
this.Controls.Add(this.label3);
this.Controls.Add(this.btn_cancel);
this.Controls.Add(this.btn_connect);
this.Controls.Add(this.cb_isSSL);
this.Controls.Add(this.txt_server);
this.Name = "Mail";
this.Text = "POP3接收端";
this.Load += new System.EventHandler(this.Mail_Load);
this.tabControl1.ResumeLayout(false);
this.tabPage1.ResumeLayout(false);
this.tabPage1.PerformLayout();
this.toolStrip1.ResumeLayout(false);
this.toolStrip1.PerformLayout();
((System.ComponentModel.ISupportInitialize)(this.number_port)).EndInit();
this.tabPage2.ResumeLayout(false);
this.tabPage2.PerformLayout();
this.ResumeLayout(false);
this.PerformLayout();
}#endregionprivate System.Windows.Forms.ToolStripButton delete;
private System.Windows.Forms.ToolStripButton save;
private System.Windows.Forms.ColumnHeader columnHeader4;
private System.Windows.Forms.ColumnHeader columnHeader3;
private System.Windows.Forms.ColumnHeader columnHeader2;
private System.Windows.Forms.ColumnHeader columnHeader1;
private System.Windows.Forms.TabControl tabControl1;
private System.Windows.Forms.TabPage tabPage1;
private System.Windows.Forms.Label label6;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.TextBox txt_Body;
private System.Windows.Forms.ListView lst_attachment;
private System.Windows.Forms.ListView lst_messages;
private System.Windows.Forms.ToolStrip toolStrip1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.NumericUpDown number_port;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox txt_password;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.TextBox txt_username;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Button btn_cancel;
private System.Windows.Forms.Button btn_connect;
private System.Windows.Forms.CheckBox cb_isSSL;
private System.Windows.Forms.TextBox txt_server;
private System.Windows.Forms.ColumnHeader columnHeader5;
private System.Windows.Forms.ColumnHeader columnHeader6;
private System.Windows.Forms.ColumnHeader columnHeader7;
private System.Windows.Forms.ColumnHeader columnHeader10;
private System.Windows.Forms.ColumnHeader columnHeader8;
private System.Windows.Forms.ColumnHeader columnHeader9;
private System.Windows.Forms.ColumnHeader columnHeader11;
private System.Windows.Forms.ColumnHeader columnHeader12;
private System.Windows.Forms.ColumnHeader columnHeader16;
private System.Windows.Forms.ColumnHeader columnHeader17;
private Sunisoft.IrisSkin.SkinEngine skinEngine1;
private System.Windows.Forms.TabPage tabPage2;
private System.Windows.Forms.TextBox txt_Header;
}
}Lumisoft下函数部分属性附表
AcceptLanguage获取或设置邮件发送方请求用于响应的语言。值null表示未指定。AllEntities 获取所有MIME实体作为列表。（继承自MIME_Message。）Attachments 获取此邮件附件。Bcc获取或设置密送收件人邮箱。值null表示未指定。Body获取或设置MIME实体主体。（继承自MIME_Entity。）BodyHtmlText 获取邮件体html文本。如果没有可用的正文html文本，则返回null。BodyText 获取邮件正文文本。如果没有可用的正文，则返回null。BodyTextEncoding 获取邮件正文文本编码。如果没有可用的正文，则返回null。Cc获取或设置抄送收件人邮箱。值null表示未指定。Comments 获取或设置有关邮件的其他注释。值null表示未指定。ContentAlternative 获取或设置邮件替代内容。值null表示标题字段不存在。（继承自MIME_Entity。）ContentBase 获取或设置用于解析此内容部分中的相对URI的基础。值null表示标题字段不存在。（继承自MIME_Entity。）ContentDescription 获取或设置邮件正文部分的描述。值null表示标题字段不存在。在RFC 2045中定义8。（继承自MIME_Entity。）ContentDisposition 获取或设置内容处置。值null表示标题字段不存在。（继承自MIME_Entity。）ContentDuration 获取或设置内容的持续时间。值null表示标题字段不存在。（继承自MIME_Entity。）Contentfeatures 获取或设置MIME正文部分的内容功能。值null表示标题字段不存在。（继承自MIME_Entity。）ContentID 获取或设置内容正文部件ID。值null表示标题字段不存在。在RFC 2045 7中定义。（继承自MIME_Entity。）ContentLanguage 获取或设置邮件内容的语言。值null表示标题字段不存在。（继承自MIME_Entity。）ContentLocation 获取或设置用于检索正文部分的URI。值null表示标题字段不存在。（继承自MIME_Entity。）ContentMD5 获取或设置内容MD5校验和。值null表示标题字段不存在。（继承自MIME_Entity。）ContentTransferEncoding 获取或设置内容传输编码。值null表示标题字段不存在。RFC定义的值在MIME_TransferEncodings中。在RFC 2045中定义6。（继承自MIME_Entity。）ContentType 获取或设置MIME内容类型。值null表示标题字段不存在。在RFC 2045中定义5。（继承自MIME_Entity。）Date获取或设置邮件日期和时间。值DateTime.MinValue表示未指定。DispositionNotificationOptions 获取或设置处置通知选项。值null表示未指定。DispositionNotificationTo 获取或设置邮箱发送处置通知邮件的位置。值null表示未指定。From获取或设置邮件作者。值null表示未指定。Header获取MIME实体头字段集合。（继承自MIME_Entity。）Importance 获取或设置邮件重要性。值null表示未指定。InReplyTo 获取或设置标识已回复的邮件。值null表示未指定。IsDisposed 获取是否释放此对象。（继承自MIME_Entity。）IsModified 获取此实体是否已加载后进行修改。（继承自MIME_Entity。）IsSigned 获取邮件是否包含签名数据。（继承自MIME_Message。）Keywords 获取或设置邮件关键字和/或短语。值null表示未指定。ListArchive 获取或设置邮件列表归档的URL。值null表示未指定。ListHelp 获取或设置邮件列表信息的URL。值null表示未指定。ListID获取或设置邮件列表标识符。值null表示未指定。ListOwner 获取或设置邮件列表所有者邮箱的URL。值null表示未指定。ListPost 获取或设置邮件列表发布的URL。值null表示未指定。ListSubscribe 获取或设置邮件列表订阅的URL。值null表示未指定。ListUnsubscribe 获取或设置邮件列表unsubscription的URL。值null表示未指定。MessageContext 获取或设置邮件的类型或上下文。值null表示未指定。MessageID获取或设置邮件标识符。值null表示未指定。MimeVersion 获取或设置MIME版本号。值null表示标题字段不存在。通常这个值是1.0。在RFC 2045第4节中定义。（继承自MIME_Entity。）OriginalMessageID 获取或设置原始邮件标识符。值null表示未指定。Parent获取此实体的父实体，如果这是根实体，则返回null。（继承自MIME_Entity。）PICSLabel 获取或设置PICS评级标签。值null表示未指定。Priority 获取或设置邮件优先级。值null表示未指定。Received 获取邮件传输跟踪信息。值null表示未指定。References 获取或设置相关的邮件标识符。值null表示未指定。ReplyTo 获取或设置邮箱回复的邮箱。值null表示未指定。ResentBcc 获取或设置重发时邮件被bcc的邮箱。值null表示未指定。ResentCc 获取或设置重新发送邮件的邮箱。值null表示未指定。ResentDate 获取或设置重新发送的日期和时间邮件。值DateTime.MinValue表示未指定。ResentFrom 获取或设置重新发送邮件的人的邮箱。值null表示未指定。ResentMessageID 获取或设置重新发送邮件的邮件标识符。值null表示未指定。ResentReplyTo 获取或设置重新发送的回复。值null表示未指定。ResentSender 获取或设置实际重新发送邮件的人的邮箱。值null表示未指定。ResentTo 获取或设置重新发送邮件的邮箱。值null表示未指定。ReturnPath这样 获取或设置邮件返回路径。值null表示未指定。Sender获取或设置邮件发件人。值null表示未指定。Subject获取或设置邮件主题。值null表示未指定。To获取或设置邮件主要收件人。值null表示未指定。
总结 1、QQ、163、sina等主流邮箱均可以登录。
2、通过解析可以获取邮件的基本信息，比如发件人、邮件正文编码方式、抄送人、主题、大小、时间、ip地址等等。
3、可以执行邮件的删除和下载行为，并可以下载附件，附件的格式没有影响，exe，jpg，pdf均可下载。
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