求一个VB.NET进行局域网内UDP广播的源代码例子

给你个udp多播例子，广播不是很清楚，呵呵

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Imports System.Net

Imports System.Net.Sockets

Imports System.Text

Public Class Form1

Inherits System.Windows.Forms.Form

Dim port As String

Dim ipadd As String

Dim ipend As IPEndPoint

Dim sendudp As New UdpClient()

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _

Handles Button1.Click

Dim ipadress As IPAddress

ipadress = IPAddress.Parse(TextBox1.Text)

'sendport = Int32.Parse(TextBox2.Text)

'ipend = New IPEndPoint(ipadress, sendport)

Try

sendudp.JoinMulticastGroup(ipadress)

MessageBox.Show("启动完成！")

Catch ex As Exception

MessageBox.Show(ex.Message)

End Try

End Sub

VB.Net读取AutoCAD图纸

如果可以的话请把分给我

以下是cad2007版的，引用autocad 2007 type library 和autocad/objectdbx common 17如果是04或者版本更低的只要引用autocad 2007 type library，代码的话大同小异，思路是一样的

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

On Error Resume Next

Dim acadapp As Autodesk.AutoCAD.Interop.AcadApplication

acadapp = GetObject(vbNullString, "autoCAD.application")

Dim acaddoc As Autodesk.AutoCAD.Interop.AcadDocument

acaddoc = acadapp.ActiveDocument

Dim Ms As Autodesk.AutoCAD.Interop.Common.AcadModelSpace

Ms = acaddoc.ModelSpace

Dim acadObjectI As Autodesk.AutoCAD.Interop.Common.AcadObject

Dim Linei As Autodesk.AutoCAD.Interop.Common.AcadLine

Dim Circlei As Autodesk.AutoCAD.Interop.Common.AcadCircle

Dim Polylinei As Autodesk.AutoCAD.Interop.Common.AcadPolyline

Dim pt As Autodesk.AutoCAD.Interop.Common.AcadPoint

For Each acadObjectI In Ms

Debug.Print(acadObjectI.ObjectName)

Select Case acadObjectI.ObjectName

Case "AcDbLine"

Linei = acadObjectI

Debug.Print("X =" Linei.StartPoint(0).ToString)

Debug.Print("Y =" Linei.StartPoint(1).ToString)

Case ""

Case ""

End Select

Next

End Sub

求vb.net的源代码，最好说明其解决问题，越多越好，满意加50分。

下面这段代码，是我用来计算每个月存500元进银行，连续30年，最后连本带利能有多少钱。这里面涉及复利计算。界面中右边的文本框用来输出每一次计算的结果。

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

  Dim nianxian As Integer '年限变量

  Dim dingcun As Integer '定存变量

  Dim fuli_big As Long '大复利

  Dim fuli_small As Long '小复利

  Dim i As Integer '循环变量

  Dim DATAstring As String '数据字符串

  nianxian = Val(年限_TextBox.Text)

  dingcun = Val(定存_TextBox.Text)

  DATAstring = ""

  For i = 1 To nianxian

      fuli_small = dingcun * (1 + 0.1875)

      dingcun = fuli_small

      fuli_big = fuli_big + fuli_small

      DATAstring = DATAstring + "[" + Trim(Str(i)) + "]" + Str(fuli_big) + Chr(13) + Chr(10)

      'DATAstring = DATAstring + "[" + Trim(Str(i)) + "]" + Str(fuli_small) + Chr(13) + Chr(10)

  Next

  'fuli_big = fuli_small

  TextBox1.Text = DATAstring

  结果_TextBox.Text = Str(fuli_big) + "元"

End Sub