Imports System.Net.NetworkInformation
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Timer1.Enabled = True
End Sub
Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
Dim pingtarget As String = "88.250.204.138"
Dim pingre As PingReply = Ping.Send(pingtarget)
If My.Computer.Network.Ping("pingtarget", 9002) Then
address.ForeColor = Color.Green
Do While My.Computer.Network.Ping("pingtarget", 9002)
Me.ListBox1.Items.Add("Response from " & pingtarget & " in " & pingre.RoundtripTime.ToString() & " ms")
My.Computer.Network.Ping("pingtarget", 9002)
Loop
Else
Timer2.Enabled = True
address.ForeColor = Color.Red
MsgBox("Connection Failed")
End If
End Sub
End Class
嘿伙计们,我刚刚开始尝试开发一个程序,它将继续ping服务器,如果连接丢失,客户端将自行重启。我有一些问题:
1-如何统计重启?否则,只要没有连接,它就会继续重启。重新启动将重新尝试重新连接互联网,但它失败太多,必须有一种方法来阻止它。例如,在3次重新启动后,即使没有连接,客户端也会运行。
2-在这些代码中,当没有连接时,我收到一条错误消息,指出“Microsoft.VisualBasic.dll中发生了'System.InvalidOperationException'类型的未处理异常”。
答案 0 :(得分:0)
一个明显的问题:
更改代码的这一部分:
My.Computer.Network.Ping("pingtarget", 9002)
到此:
My.Computer.Network.Ping(pingtarget, 9002)
您将pingtarget
作为字符串而不是变量传递。