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Last active Aug 29, 2015
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O365 - CSOM upload 2MB files
var spContext = SharePointContextProvider.Current.GetSharePointContext(HttpContext, SPHostUrl);
using (var clientContext = spContext.CreateUserClientContextForSPAppWeb())
if (clientContext != null)
//code for file size < 2MB
//file is the input which we uploaded. It can be taken from Request.Files
FileCreationInformation newFile = new FileCreationInformation();
newFile.Content = System.IO.File.ReadAllBytes(file.FileName);
newFile.Url = Path.GetFileName(file.FileName);
List docs = clientContext.Web.Lists.GetByTitle("List_Name");
Microsoft.SharePoint.Client.File uploadFile = docs.RootFolder.Files.Add(newFile);
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