Check if web server is up when checking for updates

[Blake81]

I have my application set to check my website for updates, but I don't always have my website up and running. I don't really want the users seeing an error if my site is down. Is there a way to put something in the code for it to check if the site is up, and if it isn't to just run the application without checking?

 

[MJCM]

Hi Blake,

i always use this function. It was written for vb 2003 but I never tried it on vs 2005.

Regards
MJCM

Imports System.Net
Imports System.Net.WebRequest
Imports System.Net.WebResponse
 
#Region " Is Connection Available"
 
Public Function IsConnectionAvailable() As Boolean
' Returns True if connection is available
 
Dim objUrl As New System.Uri("http://blakenet.myftp.org/")
' 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
If objResp Is Nothing Then
Else
objResp.Close()
objResp = Nothing
End If
objWebReq = Nothing
Return False
Finally
If Not objResp Is Nothing Then objResp.Close()
If Not objResp Is Nothing Then objResp = Nothing
End Try
End Function
#End Region

 

[cjard]

blake.. just run your code in the debugger with your website DOWN. Catch the point where it crashes, and add some exception handling to that area!

See MJCM code for example of Try Catch if you never used it before...