Thanks Keith for your reply.

 

I did think about that solution but its frustrating because its working on
another site in the same farm.weird.

 

Thanks anyways.

 

From: [email protected] [mailto:[email protected]] On Behalf
Of Keith Knight
Sent: Tuesday, 8 December 2009 1:32 PM
To: ozMOSS
Subject: RE: Help! - webclient.downloadData

 

Hi Trent,

 

I ran into this issue a while back also - and couldn't find an easy
solution. In the end I re-worked my code to use the SharePoint API and get
the file as a SPFile instead (as it was always going to be stored in the
same site collection as the web part that was running the code). It seemed
to work in our scenario, not sure if it's applicable to yours but maybe
worth considering.

 

Interested to know if anyone has solved it?

 

Cheers,

 

Keith

 

 

  _____  

From: [email protected] [[email protected]] On Behalf Of
Trent Allday [[email protected]]
Sent: Monday, 7 December 2009 1:27 PM
To: 'ozMOSS'
Subject: RE: Help! - webclient.downloadData

Hi Paul,

 

I currently have anonymous access ticked for the web app but the /members
site requires login. I have that part setup exactly the same as another web
app which currently works.

 

From: [email protected] [mailto:[email protected]] On Behalf
Of Paul Noone
Sent: Monday, 7 December 2009 3:25 PM
To: ozMOSS
Subject: RE: Help! - webclient.downloadData

 

Hi Trent,

 

Just playing with anonymous access now for our public sites. I could be
wrong but.I believe that if you're trying to allow access to content on a
site requiring authentication then you will still need to allow anonymous
access "Lists and Libraries" for the site collection. .which probably means
having to do it at the web app level first.

 

From: [email protected] [mailto:[email protected]] On Behalf
Of Trent Allday
Sent: Monday, 7 December 2009 3:13 PM
To: [email protected]
Subject: Help! - webclient.downloadData

 

Hi All,

 

I am becoming frustrated after spending too much on this simple issue, hope
you can help.

I have the following code to download images stored in a sharepoint document
library behind a windows authenticated site.

 

 

Protected Function downloadImage(ByVal imageUrl As String)

 

         Dim filename As String = String.Empty

        Try

 

            Dim fileReader As New WebClient()

            fileReader.Credentials = New Net.NetworkCredential(WsUserName,
WsPassword,wsDomain)

            filename = imageUrl.Substring(imageUrl.LastIndexOf("/") + 1)

 

            Return fileReader.DownloadData(imageUrl)

 

        Catch ex As Exception

            HttpContext.Current.Response.Write(ex.Message +"<BR>"+
ex.stacktrace+" <BR>" +filename)

            Return Nothing

        End Try

 

    End Function

 

Used like this: <img
src='http://siteUrl.com/_layouts/imgResize.aspx?image=http://siteUrl.com/mem
bers/PublishingImages/bball.jpg&size=80'>

 

 

Error:

The remote server returned an error: (401) Unauthorized.
at System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest&
request) at System.Net.WebClient.DownloadData(Uri address) at
imgResize.downloadImage(String imageUrl) 
bball.jpg
Buffer cannot be null. Parameter name: buffer

 

The creditials are public variables and are 100% correct. I have other web
apps on this server using the same code (_layouts folder) and works without
a problem. The impersonating user is a site collection admin. If I go to the
image url I am asked to authenticate as expected, if I pass in the
credentials I am using in the code then the image displayed.

 

I thought maybe it was an iis config issue but I have compared web.configs
with another working site that implements this code also but it didn't seem
to be missing anything.

 

Can anybody shed some light on this.

 

Regards,


Trent Allday 

 

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