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I'm trying to programmatically add an item to a document library in the Sharepoint 2013 Preview that comes with Office 365. I've managed to add an item by using the code fragment below (from a provider-hosted app in C#).

However I can't seem to find an example for doing the same thing with a document library (neither in MSDN documentation nor with Google).

var creationInformation = new ListItemCreationInformation();
Microsoft.SharePoint.Client.ListItem listItem = list.AddItem(creationInformation);
listItem.FieldValues["Foo"] = "Bar";

I'd be very glad if someone could give me some hints regarding this problem. I'm not exclusively interested in a C# solution, if you know how to do it with JavaScript or via REST API then I'd be happy to hear about that as well. Thanks in advance!

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up vote 2 down vote accepted

With C# you can do it this way -

SPFolder doclib = web.Folders["Document Library"];
doclib.Files.Add(filename, bytestream_ofthe_file);

this is one simple snippet, not the complete solution, you can easily get the bytestream of a file with C#. It's better to mark AllowUnsafeUpdate to true just to avoid some issues, make it false later.

I am not that much sure about REST API, and with the help of javascript from client side - it's little bit tricky to get the bytestream, otherwise it can be done with calling service from js also

Edit: Here's a working snippet:

List documentLibrary = web.Lists.GetByTitle("Documents");
var fileCreationInformation = new FileCreationInformation();
fileCreationInformation.Content = System.IO.File.ReadAllBytes(@"C:\foo.docx");
fileCreationInformation.Url = "foo.docx";
Microsoft.SharePoint.Client.File file = documentLibrary.RootFolder.Files.Add(fileCreationInformation);

Check this link for more details.

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Thanks @Diptarag - that pushed me in the right direction. I'll add the actual snippet that I used to your answer. – Jazzturtle Oct 10 '12 at 13:41

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