Checking if a file exists on a secure web server

[jshurst]

I need to download some files on a secure web server. I'm using the VisualBasic.Devices.Network.DownloadFile() method, however if the file does not exist then it throws an exception.

Does anyone have any ideas on how to check for this existence of the file? It is not on my local network and I have to use a username and password to log into the server over http.

Thanks,

J

 

[ca8msm]

See if this method has any success.


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Mark,
[URL unfurl="true"]http://aspnetlibrary.com[/url]
[URL unfurl="true"]http://mdssolutions.co.uk[/url] - Delivering professional ASP.NET solutions
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[jshurst]

Thanks ca8msm, but this also will throw a WebException if the file does not exist.

http://msdn2.microsoft.com/en-us/library/ez801hhe(VS.80).aspx

J

 

[ca8msm]

Yes, I had a hunch that may happen. Like the httpWebRequest, if a valid 404 status is returned, .NET treats it as an exception. Whilst it isn't normally recommended, you may have to use an exception for the execution flow (i.e. put it in it's own function and return True/False depending on whether the error occurs).


-------------------------------------------------------

Mark,
[URL unfurl="true"]http://aspnetlibrary.com[/url]
[URL unfurl="true"]http://mdssolutions.co.uk[/url] - Delivering professional ASP.NET solutions
[URL unfurl="true"]http://weblogs.asp.net/marksmith[/url]

 

[jshurst]

That's what I was just talking about with a colleague ;-)

Thanks,

J