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SharePoint 2010: HowTo upload a file of the size of 1 GB using client object model

Article ID: 2529243 - View products that this article applies to.

Symptoms

When you use SharePoint Client OM to upload files to SharePoint 2010 Document Library, uploading of files larger than 3 MB fail with the following error:

The remote server returned an error: (400) Bad Request.

Stack trace:

System.Net.WebException was unhandled
Message=The remote server returned an error: (400) Bad Request.
Source=System
StackTrace:
at System.Net.HttpWebRequest.GetResponse()
at Microsoft.SharePoint.Client.SPWebRequestExecutor.Execute()
at Microsoft.SharePoint.Client.ClientRequest.ExecuteQueryToServer(ChunkStringBuilder sb)
at Microsoft.SharePoint.Client.ClientRequest.ExecuteQuery()
at Microsoft.SharePoint.Client.ClientRuntimeContext.ExecuteQuery()
at Microsoft.SharePoint.Client.ClientContext.ExecuteQuery()
at SPClientOMConsoleApp.Program.Main(String[] args) in C:\SPClientOMConsoleApp\SPClientOMConsoleApp\Program.cs:line 32
at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:

Sample program used to upload file using SharePoint 2010 Client OM:

            ClientContext clientContext = new ClientContext("http://server:10000/sites/testSite");
            Web web = clientContext.Web;
            clientContext.Load(web);
            List docLib = web.Lists.GetByTitle("doclib");
            clientContext.Load(docLib);
            clientContext.ExecuteQuery();
            byte[] bFile = System.IO.File.ReadAllBytes(@"C:\largeFile.docx");
            FileCreationInformation file = new FileCreationInformation();
            file.Content = bFile;
            file.Url = "http://server:10000/sites/testSite/doclib/" + "test.docx";
            Microsoft.SharePoint.Client.File newFile = docLib.RootFolder.Files.Add(file);
            clientContext.Load(newFile);
            clientContext.ExecuteQuery();

Requirement:

How to upload files with larger size, for example up to 1 GB or more, using Client Object Model in SharePoint 2010.

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Cause

The default internal restrictions on file sizes and timeout settings halt uploading of larger files using Client Object Model in SharePoint.

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Resolution

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More Information

At times you may see that the upload operation returns a timeout exception but this is critical only for very large file sizes which are close to 2 GB. Otherwise, it can be ignored using a try-catch block and you should see that the file got uploaded successfully.

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