form1.vb

用visualbasic.net2003实现的接收网段内的图片

Imports System.IO
Imports System.Net
Imports System.Net.Sockets
Imports System.Threading

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 PictureBox1 As System.Windows.Forms.PictureBox
    Friend WithEvents Timer1 As System.Windows.Forms.Timer
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.components = New System.ComponentModel.Container
        Me.PictureBox1 = New System.Windows.Forms.PictureBox
        Me.Timer1 = New System.Windows.Forms.Timer(Me.components)
        Me.SuspendLayout()
        '
        'PictureBox1
        '
        Me.PictureBox1.Location = New System.Drawing.Point(0, 0)
        Me.PictureBox1.Name = "PictureBox1"
        Me.PictureBox1.Size = New System.Drawing.Size(296, 272)
        Me.PictureBox1.TabIndex = 0
        Me.PictureBox1.TabStop = False
        '
        'Timer1
        '
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(292, 273)
        Me.Controls.Add(Me.PictureBox1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

    End Sub

#End Region
    Dim listener As Socket = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
    Dim socke As Socket

    Sub ReceiveSocket(ByVal State As Object)
        'Dim endPoint As IPEndPoint = New IPEndPoint(IPAddress.Parse("192.168.1.100"), 11000) 'he
        Dim endPoint As IPEndPoint = New IPEndPoint(IPAddress.Parse("10.10.2.108"), 11000) 'he
        Dim socket As Socket = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)

        socket.Connect(endPoint)
        If socket.Connected Then
            Dim msg(4092) As Byte
            Dim ms As MemoryStream = New MemoryStream
            Dim i As Integer = 1

            While (i <> 0)

                i = socket.Receive(msg, 0, msg.Length, SocketFlags.None)

                ms.Write(msg, 0, i)
            End While
            PictureBox1.Image = Image.FromStream(ms)
            socket.Close()
            'PictureBox1.Hide()
        End If
    End Sub
    Sub SendSocket(ByVal State As Object)
        'Dim endPoint As IPEndPoint = New IPEndPoint(IPAddress.Parse("192.168.1.102"), 11000) 'own
        Dim endPoint As IPEndPoint = New IPEndPoint(IPAddress.Parse("10.10.2.108"), 11000) 'own

        listener.Blocking = True
        listener.Bind(endPoint)
        listener.Listen(0)
    End Sub
    Sub Send(ByVal State As Object)
        While (True)
            'PictureBox1.Show()
            Dim socket As Socket = listener.Accept()

            Dim msg(4092) As Byte
            Dim ms As MemoryStream = New MemoryStream
            Dim i As Integer = 1
            While (i <> 0)
                i = socket.Receive(msg, 0, msg.Length, SocketFlags.None)
                ms.Write(msg, 0, i)
                'MessageBox.Show(i)
            End While
            PictureBox1.Image = Image.FromStream(ms)
            'PictureBox1.Hide()
            'Dim bmap As Image = PictureBox1.Image
            'If j <= 10 Then
            'bmap.Save(j + ".jpg", System.Drawing.Imaging.ImageFormat.Jpeg)
            'j = j + 1
            'Else
            'j = 1
            'End If
        End While
    End Sub
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        ThreadPool.QueueUserWorkItem(New System.Threading.WaitCallback(AddressOf SendSocket))
        Timer1.Enabled = True
    End Sub
    Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
        ThreadPool.QueueUserWorkItem(New System.Threading.WaitCallback(AddressOf Send))
    End Sub

  
End Class