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vb點(diǎn)虐 如何獲取某個(gè)進(jìn)程的UDP連接信息（要有目標(biāo)ip和port）
private void MyPrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
扎魯特旗網(wǎng)站建設(shè)公司創(chuàng)新互聯(lián),扎魯特旗網(wǎng)站設(shè)計(jì)制作，有大型網(wǎng)站制作公司豐富經(jīng)驗(yàn)。已為扎魯特旗上千家提供企業(yè)網(wǎng)站建設(shè)服務(wù)。企業(yè)網(wǎng)站搭建\成都外貿(mào)網(wǎng)站建設(shè)公司要多少錢，請找那個(gè)售后服務(wù)好的扎魯特旗做網(wǎng)站的公司定做！
public static boolean isNumeric(String str){
if(str.matches("http://d*"){
return true;
}else{
return false;
}
}
VB.NET如何判斷電腦是否已連接到網(wǎng)絡(luò)？
Microsoft.VisualBasic.Devices.Network.IsAvailable As Boolean
生成實(shí)例后可以通過此屬性來獲取是否聯(lián)網(wǎng)的值，True代表已聯(lián)網(wǎng)，F(xiàn)alse代表沒有聯(lián)網(wǎng)
Microsoft.VisualBasic.Devices.Network.NetworkAvailabilityChanged(ByVal Object, ByVal Microsoft.VisualBasic.Devices.NetworkAvailableEventArgs)
該事件是在電腦斷開/連上互聯(lián)網(wǎng)是引發(fā)的
其中：
e.IsNetworkAvailable
的功能同Microsoft.VisualBasic.Devices.Network.IsAvailable
實(shí)例:
Dim?netListener?As?New?Microsoft.VisualBasic.Devices.Network?'生成實(shí)例
If?netListener.IsAvailable?=?True?Then
MsgBox("已聯(lián)網(wǎng)")
Else
MsgBox("未聯(lián)網(wǎng)")
End?If
NetworkAvailabilityChanged實(shí)例：
WithEvents?netListener?As?New?Microsoft.VisualBasic.Devices.Network?'生成實(shí)例
Private?Sub?OnNetworkChanged(ByVal?Object,?ByVal?Microsoft.VisualBasic.Devices.NetworkAvailableEventArgs)Handles?netListener.NetworkAvailabilityChanged
If?e.IsNetworkAvailable?=?True?Then
MsgBox("已聯(lián)網(wǎng)")
Else
MsgBox("未聯(lián)網(wǎng)")
End?If
End?Sub
vb點(diǎn)虐 應(yīng)用程序 局域網(wǎng)運(yùn)用
用WebService或者Remoting，提交服務(wù)器處理
___________________________
只要你的并發(fā)數(shù)并不大，sqlserver有并發(fā)控制，更新數(shù)據(jù)時(shí)會(huì)鎖住
用vb點(diǎn)虐 實(shí)現(xiàn)網(wǎng)絡(luò)通信
用 vb點(diǎn)虐 socket通信
Dim th As Threading.Thread
2 Dim tcpl As System.Net.Sockets.TcpListener
3
4 Private Sub Form1_Load()Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
5 th = New System.Threading.Thread(New System.Threading.ThreadStart(AddressOf MyListen))
6 th.Start()
7 End Sub
8
9 Public Sub SendMessage()Sub SendMessage(ByVal IP As String, ByVal SendMsg As String)
10 Try
11 If IP "" Then
12 Dim tcpc As New System.Net.Sockets.TcpClient(IP, 5656)
13 Dim tcpStream As Net.Sockets.NetworkStream = tcpc.GetStream
14 Dim reqStream As New IO.StreamWriter(tcpStream)
15 reqStream.Write(SendMsg)
16 reqStream.Flush()
17 tcpStream.Close()
18 tcpc.Close()
19 End If
20 Catch ex As Exception
21 MsgBox(ex.Message.ToString)
22 End Try
23 End Sub
24 Private Sub MyListen()Sub MyListen()
25 Try
26 Dim ipAddress As System.Net.IPAddress = System.Net.Dns.Resolve(System.Net.Dns.GetHostName).AddressList(0)
27 tcpl = New System.Net.Sockets.TcpListener(ipAddress, 5656)
28 tcpl.Start()
29 While True
30 Dim s As System.Net.Sockets.Socket = tcpl.AcceptSocket()
31 Dim MyBuffer(1024) As Byte
32 Dim i As Integer
33 i = s.Receive(MyBuffer)
34 If i 0 Then
35 Dim lstrRec As String
36 Dim j As Integer
37 For j = 0 To i - 1
38 TextBox1.Text += Chr(MyBuffer(j)) ","
39 Next
40 End If
41 End While
42 Catch ex As Exception
43 MsgBox(ex.Message.ToString)
44 End Try
45 End Sub
46
47 Private Sub Button1_Click()Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
48 SendMessage("192.168.0.61", TextBox2.Text)
49 End Sub
新聞標(biāo)題：vb點(diǎn)虐 進(jìn)程聯(lián)網(wǎng) vbnet進(jìn)度條
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