检查 Internet 连接 vb.net [英] Check Internet Connection vb.net

问题描述

我正在尝试运行一些 vb.net 代码来指示我是否已连接到互联网

I am trying to run some vb.net code that indicates if i'm connected to the internet

If My.Computer.Network.IsAvailable Then
    MsgBox("Computer is connected.")
Else
    MsgBox("Computer is not connected.")
End If

如果我连接到不需要登录的 WiFi 信号，这可以正常工作.如果我连接到需要登录/支付的公共 WiFi 信号，并且在完成此步骤之前执行代码，它仍然告诉我我已连接(理论上是的，但没有支付/登录我不是)

This works fine if I'm connecting to a WiFi signal that doesn't require a login. If I connect to a public WiFi signal that I'm required to login/pay and I execute the code before completing this step it still tells me I'm connected (in theory yes but without paying/logging in I'm not)

任何想法如何设置?

谢谢

推荐答案

您可以通过尝试阅读 Google.com 来检查互联网连接:

You could check for an internet connection by trying to read Google.com:

Public Shared Function CheckForInternetConnection() As Boolean
    Try
        Using client = New WebClient()
            Using stream = client.OpenRead("http://www.google.com")
                Return True
            End Using
        End Using
    Catch
        Return False
    End Try
End Function

取自:此处

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