How to upload a file with silverlight client object model?

Question

I have been trying to upload files to a sharepoint doclib with a silverlight application. It works fine, as long as the file is not larger than about 50kb. if i try to upload larger files, i get an error:

System.Net.WebException The remote server returned an error: NotFound

 

See my code below 

ClientContext clientCxt = new ClientContext("http://dev");

  List docs;

  Site mysite;

  Folder myfolder;

docs = clientCxt.Web.Lists.GetByTitle("Shared Documents");

   mysite = clientCxt.Site;

   myfolder = clientCxt.Web.Lists.GetByTitle("Shared Documents").RootFolder;

   clientCxt.Load(mysite);

   clientCxt.Load(docs);

   clientCxt.Load(myfolder);

   clientCxt.ExecuteQueryAsync(new ClientRequestSucceededEventHandler(OnSuccess), new ClientRequestFailedEventHandler(OnFailed));

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.

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foreach (FileInfo FileDropped in FilesDropped)

    {

     FileStream fs = FileDropped.OpenRead();

     

      byte[] FileContent = new byte[fs.Length];

      FileCreationInformation File = new FileCreationInformation();

      int dummy = fs.Read(FileContent, 0, (int)fs.Length);

      File.Content = FileContent;

      File.Url = mysite.Url + myfolder.ServerRelativeUrl + "/" + FileDropped.Name;

      File.Overwrite = true;

      Files.Add(File);

      OneFileUploaded = true;





      if (OneFileUploaded)

       clientCxt.ExecuteQueryAsync(OnSuccess, OnFailed);

    }   

Answer 1

 

2 possibilities :

1. set the following value of SPClientRequestServiceSettings.MaxReceivedMessageSize
2. Http DAV : Microsoft.SharePoint.Client.File.SaveBinaryDirect

You will find an example here :

http://blogs.msdn.com/sridhara/archive/2010/03/12/uploading-files-using-client-object-model-in-sharepoint-2010.aspx

Hope this helps

Serge Luca

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Serge Luca; blog: http://sergeluca.spaces.live.com Devoteam Belgium

Answer 2

Thanks for your reply.

But in silverlight client object model there is no Microsoft.SharePoint.Client.File.SaveBinaryDirect method.

And the SPClientRequestServiceSettings is in the Microsoft.SharePoint.Administration Namespace and i can't use that one in a silverlight application because it was not built against silverlight.

Answer 3

you are right I didn't notice the word "silverlight" in your post :-)

Try this sample http://technicaldishes.blogspot.com/2010/01/silverlight-clientobject-model.html and let me know if that works

 

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Serge Luca; blog: http://sergeluca.spaces.live.com Devoteam Belgium

Answer 4

That's basically what i am doing, if you look at my code above. And it does work fine, as long as the files don't exeed 50kb. But i need way more then just 50kb......

Answer 5

could you try by setting the SPClientRequestServiceSettings.MaxReceivedMessageSize to a higher value from a server side console application ?

I know this setting works with the Managed client OM, but I'm not sure it has any impact on the Silverlight OM.

 

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Serge Luca; blog: http://sergeluca.spaces.live.com Devoteam Belgium

Answer 6

Hey very cool, that worked. And my silverlight application is working too now. Well that is not the best solution yet, but at least a workaround for now.

Do you know whats the impact of setting this to a higher value? Will sharepoint run into any problems now?

Answer 7

I'm pretty sure  it doesn't have any bad impact on Sharepoint; it is probably a way to prevent people from overloading the server.

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Serge Luca; blog: http://sergeluca.spaces.live.com Devoteam Belgium

Answer 8

I'm pretty sure  it doesn't have any bad impact on Sharepoint; it is probably a way to prevent people from overloading the server.

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Serge Luca; blog: http://sergeluca.spaces.live.com Devoteam Belgium