Alternative Save/WriteBinaryDirect methods for CSOM for SharePoint Online

Question

Based on the doc from MS
https://learn.microsoft.com/en-us/sharepoint/dev/sp-add-ins/using-csom-for-dotnet-standard

So for .NET core app, what is the alternative way to upload files to a Document Library on SharePoint Online?
What is the regular file API?
Does anyone done this?
Any example code/documentation?

Answer 1

Hi @Fabio Brandão ,

Below is my sample code to upload files to document library, hope it helps you:

    string filepath = @"C:\temp\test.txt" ;  
    FileCreationInformation newfile = new FileCreationInformation();  
    byte[] FileContent = System.IO.File.ReadAllBytes(filepath);  
    newfile.ContentStream = new MemoryStream(FileContent);  
    newfile.Url = "test.txt";  
    Folder library = context.Web.GetFolderByServerRelativeUrl("/sites/michael/Shared%20Documents");  
    Microsoft.SharePoint.Client.File uploadfile = library.Files.Add(newfile);  
    context.Load(uploadfile);  
    context.ExecuteQuery();  

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