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Is an Internet Connection Available?

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  10 years ago

  by Developer Fusion Bot

  Developer Fusion Bot

  , United Kingdom

  Joined 3 years ago

  This thread is for discussions of Is an Internet Connection Available?.

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  6 years ago

  by npond

  Nathan Pond

  US, United States

  Joined 6 years ago

  For some reason or another I had to take out a line, the functino I used is as follows:
  

  
  Public Function IsConnectionAvailable() As Boolean
     ' Returns True if connection is available
     ' Replace www.yoursite.com with a site that
     ' is guaranteed to be online - perhaps your
     ' corporate site, or microsoft.com
     Dim objUrl As New System.Uri("http://www.yoursite.com/")
     ' Setup WebRequest
     Dim objWebReq As System.Net.WebRequest
     objWebReq = System.Net.WebRequest.Create(objUrl)
     Dim objResp As System.Net.WebResponse
     Try
         ' Attempt to get response and return True
         objResp = objWebReq.GetResponse
         objResp.Close()
         objWebReq = Nothing
         Return True
     Catch ex As Exception
         ' Error, exit and return False
         objWebReq = Nothing
         Return False
     End Try
  End Function
  

  
  The only change I made was taking out the objResp.Close() after the catch.  It appears that is not created on a failure so the close function errors.
  

  
  Nathan

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  5 years ago

  by uc98

  uc98

  , Indonesia

  Joined 5 years ago

  I get this error when I try to run it on my IIS, please help me!
  

  
  Error Type:
  Microsoft VBScript compilation (0x800A0400)
  Expected statement
  /test.asp, line 2, column 40
  Public Function IsConnectionAvailable() As Boolean
  ---------------------------------------^
  

  
  I saved the page in a page name test.asp
  and the code to check at the botton of the same page.
  

  
  
  Cipto
  

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  5 years ago

  by dkitts

  dkitts

  , United States

  Joined 5 years ago

  The exception on this errors out if you are offline. To fix this comment out the objresp.close line under the catch exception.
  

  
  You can't close something that didn't open
  

  
  

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  4 years ago

  by visualmodules

  alain a. buenaventura

  , Philippines

  Joined 6 years ago

  Helo, I would like to ask if you know how to make internet connection and terminate it in VB.NET? if you know, please send me the code. thanks a lot

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  4 years ago

  by codesid

  codesid

  , United States

  Joined 4 years ago

  you can not use VB.NET in ASP pages... Active Server Pages does not support .NET.
  You have to use Visual Studio and create a .NET web page, and the file extension will be
  .aspx
  

  
  Happy programming!!!

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  3 years ago

  by inferano

  Paul N

  Bangalore,India, India

  Joined 4 years ago

  Real simple and neat chunk of code that could be used in any kind of Application, whether it be a Console or a windows Application and not just a Web Application.

  I had used the same code to make a web request to an ASP page from my Windows Application.

  Regards

   

   

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  1 year ago

  by pknight

  Phil Knight

  , United States

  Joined 1 year ago

  LooooooooooL
   I first disconnect my ADSL connection, then started this code.

   It tooks a second for my modem to reconnect again and this function returns "TRUE" 

   I will need different solution 

  
  

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  10 months ago

  by Jinx101

  John Smith

  , United States

  Joined 1 year ago
  My.Computer.Network.IsAvailable =)
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