form1.vb

电子邮件发送和接收程序,里面有实现代码的全过程

Imports System.Web
'引入Web类
Imports System.Data
'引入数据管理类
Imports System.Drawing
'引入图形访问类
Imports System.Web.Mail
'引入Mail类，构造和发送消息
Imports System.Collections
'引入接口类
Imports System.Windows.Forms
Imports System.ComponentModel

Public Class Form1
    Inherits System.Windows.Forms.Form
    Dim message As New MailMessage
    '定义一个新的邮件消息
    Dim sendTo As String
    '定义存取发送目的地址
    Dim sendFrom As String
    '定义存取发送原址
    Dim Subject As String
    '定义邮件标题
    Dim Attachs As MailAttachment
    '定义邮件附件，注意，在这里一次只能添加一个附件
    Dim proity As MailPriority
    '定义信件的优先级

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写 dispose 以清理组件列表。
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents GroupBox1 As System.Windows.Forms.GroupBox
    Friend WithEvents GroupBox2 As System.Windows.Forms.GroupBox
    Friend WithEvents GroupBox3 As System.Windows.Forms.GroupBox
    Friend WithEvents GroupBox4 As System.Windows.Forms.GroupBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents Label5 As System.Windows.Forms.Label
    Friend WithEvents Label6 As System.Windows.Forms.Label
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox3 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox4 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox5 As System.Windows.Forms.TextBox
    Friend WithEvents RadioButton1 As System.Windows.Forms.RadioButton
    Friend WithEvents RadioButton2 As System.Windows.Forms.RadioButton
    Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox
    Friend WithEvents RichTextBox1 As System.Windows.Forms.RichTextBox
    Friend WithEvents OpenFileDialog1 As System.Windows.Forms.OpenFileDialog
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.GroupBox1 = New System.Windows.Forms.GroupBox
        Me.GroupBox3 = New System.Windows.Forms.GroupBox
        Me.RichTextBox1 = New System.Windows.Forms.RichTextBox
        Me.GroupBox2 = New System.Windows.Forms.GroupBox
        Me.TextBox5 = New System.Windows.Forms.TextBox
        Me.TextBox4 = New System.Windows.Forms.TextBox
        Me.TextBox3 = New System.Windows.Forms.TextBox
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.Label5 = New System.Windows.Forms.Label
        Me.Label4 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label1 = New System.Windows.Forms.Label
        Me.Button3 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Button1 = New System.Windows.Forms.Button
        Me.GroupBox4 = New System.Windows.Forms.GroupBox
        Me.ComboBox1 = New System.Windows.Forms.ComboBox
        Me.RadioButton2 = New System.Windows.Forms.RadioButton
        Me.RadioButton1 = New System.Windows.Forms.RadioButton
        Me.Label6 = New System.Windows.Forms.Label
        Me.OpenFileDialog1 = New System.Windows.Forms.OpenFileDialog
        Me.GroupBox1.SuspendLayout()
        Me.GroupBox3.SuspendLayout()
        Me.GroupBox2.SuspendLayout()
        Me.GroupBox4.SuspendLayout()
        Me.SuspendLayout()
        '
        'GroupBox1
        '
        Me.GroupBox1.Controls.Add(Me.GroupBox3)
        Me.GroupBox1.Controls.Add(Me.GroupBox2)
        Me.GroupBox1.Dock = System.Windows.Forms.DockStyle.Fill
        Me.GroupBox1.Location = New System.Drawing.Point(0, 0)
        Me.GroupBox1.Name = "GroupBox1"
        Me.GroupBox1.Size = New System.Drawing.Size(544, 406)
        Me.GroupBox1.TabIndex = 0
        Me.GroupBox1.TabStop = False
        '
        'GroupBox3
        '
        Me.GroupBox3.Controls.Add(Me.RichTextBox1)
        Me.GroupBox3.Location = New System.Drawing.Point(8, 248)
        Me.GroupBox3.Name = "GroupBox3"
        Me.GroupBox3.Size = New System.Drawing.Size(528, 152)
        Me.GroupBox3.TabIndex = 1
        Me.GroupBox3.TabStop = False
        Me.GroupBox3.Text = "信件正文"
        '
        'RichTextBox1
        '
        Me.RichTextBox1.Location = New System.Drawing.Point(8, 17)
        Me.RichTextBox1.Name = "RichTextBox1"
        Me.RichTextBox1.Size = New System.Drawing.Size(512, 128)
        Me.RichTextBox1.TabIndex = 0
        Me.RichTextBox1.Text = ""
        '
        'GroupBox2
        '
        Me.GroupBox2.Controls.Add(Me.TextBox5)
        Me.GroupBox2.Controls.Add(Me.TextBox4)
        Me.GroupBox2.Controls.Add(Me.TextBox3)
        Me.GroupBox2.Controls.Add(Me.TextBox2)
        Me.GroupBox2.Controls.Add(Me.TextBox1)
        Me.GroupBox2.Controls.Add(Me.Label5)
        Me.GroupBox2.Controls.Add(Me.Label4)
        Me.GroupBox2.Controls.Add(Me.Label3)
        Me.GroupBox2.Controls.Add(Me.Label2)
        Me.GroupBox2.Controls.Add(Me.Label1)
        Me.GroupBox2.Controls.Add(Me.Button3)
        Me.GroupBox2.Controls.Add(Me.Button2)
        Me.GroupBox2.Controls.Add(Me.Button1)
        Me.GroupBox2.Controls.Add(Me.GroupBox4)
        Me.GroupBox2.Location = New System.Drawing.Point(8, 17)
        Me.GroupBox2.Name = "GroupBox2"
        Me.GroupBox2.Size = New System.Drawing.Size(520, 231)
        Me.GroupBox2.TabIndex = 0
        Me.GroupBox2.TabStop = False
        Me.GroupBox2.Text = "收发地址"
        '
        'TextBox5
        '
        Me.TextBox5.Location = New System.Drawing.Point(96, 144)
        Me.TextBox5.Name = "TextBox5"
        Me.TextBox5.Size = New System.Drawing.Size(264, 21)
        Me.TextBox5.TabIndex = 13
        Me.TextBox5.Text = ""
        '
        'TextBox4
        '
        Me.TextBox4.Location = New System.Drawing.Point(96, 112)
        Me.TextBox4.Name = "TextBox4"
        Me.TextBox4.Size = New System.Drawing.Size(264, 21)
        Me.TextBox4.TabIndex = 12
        Me.TextBox4.Text = ""
        '
        'TextBox3
        '
        Me.TextBox3.Location = New System.Drawing.Point(96, 80)
        Me.TextBox3.Name = "TextBox3"
        Me.TextBox3.Size = New System.Drawing.Size(264, 21)
        Me.TextBox3.TabIndex = 11
        Me.TextBox3.Text = ""
        '
        'TextBox2
        '
        Me.TextBox2.Location = New System.Drawing.Point(96, 48)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(264, 21)
        Me.TextBox2.TabIndex = 10
        Me.TextBox2.Text = ""
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(96, 16)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(264, 21)
        Me.TextBox1.TabIndex = 9
        Me.TextBox1.Text = ""
        '
        'Label5
        '
        Me.Label5.Location = New System.Drawing.Point(16, 152)
        Me.Label5.Name = "Label5"
        Me.Label5.Size = New System.Drawing.Size(64, 24)