problems using WebClient

I made an update system for my app but the only problem is that the thing crashed when ur not connected to the internet. I did some searching on the VB board but all those examples just work for modem/LAN and non works if you have multiple Network cards in ur Comp. Is there something cool in .NET that solves this?

I also tried to use try, catch endtry etc but they don't really help me cause the WebClient comonent just loops until it DLs the file, it's doesn't give up :D.

yeah but how CAN i detect an internet connection then? I have multiplce network cards and none of the ways shown on the boards seem to work...

use WMI to query the network adapters
This is and example

VB Code:

dim query1 as new ManagementObjectSearcher("select ConnectionState from Win32_NetorkConnection")
 
dim queryColl as ManagementObjectCollection() = query1.Get()
 
string connectionState = ""
dim   mo as new ManagementObject()
 
For Each mo In queryColl
    connectionState = mo("ConnectionState").ToString()
Next
 
Select Case connectionState
      Case "Connected"
               'do whatever
       Case "Error"
               'do whatever
       Case "Paused"
               'do whatever
       Case "Disconnected"
               'do whatever
       Case "Connecting"
              'do whatever
       Case "Reconnecting"
               'do  whatever
End Select

You have to import System.Management namespace and the System.Managment.dll

my .NET doesn;t really like that code, it's full of errors...

Sorry I made a few mistakes, I am so used to the C# syntax, I forgot that I was doing the VB example

Here is updated code without the select statement.

VB Code:

Dim query1 As New ManagementObjectSearcher("select connectionstate from Win32_NetworkConnection")
 
        Dim queryColl As ManagementObjectCollection
 
        queryColl = query1.Get()
 
 
        Dim connectionState As String = ""
 
        Dim mo As New ManagementObject()
 
        For Each mo In queryColl
 
 
            connectionState = mo("ConnectionState").ToString()
        Next
 
        MessageBox.Show(connectionState)

hmmm, the messagebox stays kinda empty....:(