Upload file to Office 365 SharePoint Online 2013

This short article shows you the code snippet that upload the file to Office 365 SharePoint Online 2013 Documents Library.

The code snippet below will help you upload a file to Office 365 SharePoint Online 2013 Documents Library. Read the comments.

using Microsoft.SharePoint.Client;

using SP = Microsoft.SharePoint.Client;


namespace ConAppUploadFiletoSP


    class Program


        static void Main(string[] args)


            String listName = “NewList”;

            //site url goes here

            string siteUrl = https://someone.sharepoint.com/”;


            ClientContext clientContext = new ClientContext(siteUrl);

            //login password goes here

            string password = “password”;

            SecureString securePassword = new SecureString();


            foreach (char c in password)




            clientContext.Credentials = new SharePointOnlineCredentials(“someone@someone.onmicrosoft.com”, securePassword);


            CamlQuery camlQuery = new CamlQuery();

            camlQuery.ViewXml = “”;



            SP.List oList = clientContext.Web.Lists.GetByTitle(“Documents”);


            //The important code start from this point onward

            FileCreationInformation newFile = new FileCreationInformation();

            newFile.Content = System.IO.File.ReadAllBytes(“NewDocument.docx”);


            newFile.Url = “NewDocument”;


            Microsoft.SharePoint.Client.File uploadFile = oList.RootFolder.Files.Add(newFile); 









About chanmingman

Since March 2011 Microsoft Live Spaces migrated to Wordpress (http://www.pcworld.com/article/206455/Microsoft_Live_Spaces_Moves_to_WordPress_An_FAQ.html) till now, I have is over 1 million viewers. This blog is about more than 50% telling you how to resolve error messages, especial for Microsoft products. The blog also has a lot of guidance teaching you how to get stated certain Microsoft technologies. The blog also uses as a help to keep my memory. The blog is never meant to give people consulting services or silver bullet solutions. It is a contribution to the community. Thanks for your support over the years. Ming Man is Microsoft MVP since year 2006. He is a software development manager for a multinational company. With 25 years of experience in the IT field, he has developed system using Clipper, COBOL, VB5, VB6, VB.NET, Java and C #. He has been using Visual Studio (.NET) since the Beta back in year 2000. He and the team have developed many projects using .NET platform such as SCM, and HR based applications. He is familiar with the N-Tier design of business application and is also an expert with database experience in MS SQL, Oracle and AS 400.
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