Sharepoint 2010 Client Object Model - Upload Document (409 Conflict)

Question

I am using the SP2010 Client Object Model to upload to a document library, following the lead from Microsoft here: http://msdn.microsoft.com/en-us/library/ee956524.aspx#SP2010Cl

Answer 1

In my case the file was uploaded using SaveBinaryDirect into a library with versioning turned on. If the file is not checked in, any subsequent attempts to upload a newer version will result in the 409 error. Make sure to check-in after upload in when versioning is turned on.

    var clientContext = (ClientContext)file.Context;
    destinationWebContext.Load(destinationList, d => d.ParentWebUrl);
    destinationWebContext.Load(destinationList, d => d.RootFolder.ServerRelativeUrl);
    clientContext.Load(file, f => f.ServerRelativeUrl);
    clientContext.Load(file, f => f.Name);

    if (clientContext.HasPendingRequest)
       clientContext.ExecuteQueryRetry();

    if (destinationWebContext.HasPendingRequest)
        destinationWebContext.ExecuteQueryRetry();

    var location = string.Format("{1}/{2}", destinationList.ParentWebUrl, destinationList.RootFolder.ServerRelativeUrl, file.Name);
    var fileInfo = File.OpenBinaryDirect(clientContext, file.ServerRelativeUrl);
    File.SaveBinaryDirect(destinationWebContext, location, fileInfo.Stream, overwrite);

    File newFile = destinationWebContext.Web.GetFileByServerRelativeUrl(location);
    newFile.CheckIn("Checked in by provisioning service", Microsoft.SharePoint.Client.CheckinType.MajorCheckIn);
    destinationWebContext.ExecuteQuery();