'**************************
'检查邮件例子
'作者：wgscd
' qq 153964481
'*************************
Imports System.Net
Imports System.Net.Sockets
Imports System.IO
Public Class Form1
Inherits System.Windows.Forms.Form
#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 Button1 As System.Windows.Forms.Button
Friend WithEvents Timer1 As System.Windows.Forms.Timer
Friend WithEvents ListBox1 As System.Windows.Forms.ListBox
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.components = New System.ComponentModel.Container
Me.Button1 = New System.Windows.Forms.Button
Me.Timer1 = New System.Windows.Forms.Timer(Me.components)
Me.ListBox1 = New System.Windows.Forms.ListBox
Me.SuspendLayout()
'
'Button1
'
Me.Button1.BackColor = System.Drawing.Color.FromArgb(CType(192, Byte), CType(192, Byte), CType(255, Byte))
Me.Button1.FlatStyle = System.Windows.Forms.FlatStyle.Flat
Me.Button1.Location = New System.Drawing.Point(16, 8)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing.Size(104, 40)
Me.Button1.TabIndex = 0
Me.Button1.Text = "checkMai"
'
'Timer1
'
Me.Timer1.Interval = 2000
'
'ListBox1
'
Me.ListBox1.BackColor = System.Drawing.Color.FromArgb(CType(255, Byte), CType(255, Byte), CType(192, Byte))
Me.ListBox1.HorizontalScrollbar = True
Me.ListBox1.ItemHeight = 12
Me.ListBox1.Location = New System.Drawing.Point(16, 64)
Me.ListBox1.Name = "ListBox1"
Me.ListBox1.Size = New System.Drawing.Size(104, 100)
Me.ListBox1.TabIndex = 2
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
Me.BackColor = System.Drawing.Color.FromArgb(CType(192, Byte), CType(192, Byte), CType(255, Byte))
Me.ClientSize = New System.Drawing.Size(146, 182)
Me.Controls.Add(Me.ListBox1)
Me.Controls.Add(Me.Button1)
Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow
Me.Name = "Form1"
Me.Text = "MSG------By wgscd"
Me.ResumeLayout(False)
End Sub
#End Region
Sub checkMail()
Dim ip As IPAddress = Dns.GetHostByName(Dns.GetHostName.ToString).AddressList(0)
Dim ipe As New IPEndPoint(ip, 2345)
Me.Text = ip.ToString
Dim tcpc As New TcpClient(ipe)
tcpc.Connect(Dns.GetHostByName("pop3.126.com").HostName, 110)
Dim ntstream As NetworkStream
Dim sr As StreamReader
Dim sw As StreamWriter
ntstream = tcpc.GetStream
Me.ListBox1.Items.Add(ReadFromNetStream(ntstream))
WriteToNetStream(ntstream, "user wgscd")
Me.ListBox1.Items.Add(ReadFromNetStream(ntstream))
WriteToNetStream(ntstream, "pass yourpassword")
Dim msg As String = ReadFromNetStream(ntstream)
If msg Like "+OK 0 message*" Then
MsgBox("No Mail Right now!")
Me.ListBox1.Items.Add(ReadFromNetStream(ntstream))
Else
MsgBox(msg)
WriteToNetStream(ntstream, "list")
Me.ListBox1.Items.Add(ReadFromNetStream(ntstream))
End If
WriteToNetStream(ntstream, "quit")
Me.ListBox1.Items.Add(ReadFromNetStream(ntstream))
tcpc.Close()
End Sub
Function ReadFromNetStream(ByRef NetStream As NetworkStream) As String
Dim bb As Byte() = New Byte(521) {}
NetStream.Read(bb, 0, bb.Length)
Dim read As String = System.Text.Encoding.UTF8.GetString(bb)
Return read
End Function
Function WriteToNetStream(ByRef NetStream As NetworkStream, ByVal command As String) As String
Dim stringToSend As String = command & vbCrLf
Dim arrayToSend As Byte() = System.Text.Encoding.UTF8.GetBytes(stringToSend.ToCharArray)
NetStream.Write(arrayToSend, 0, arrayToSend.Length) '写入流，不用返回值
End Function
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim t As New Threading.Thread(AddressOf checkMail)
t.Start()
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
End Class