title: Alternative Save/OpenBinaryDirect methods for CSOM for SharePoint Online
body: <p>Based on the doc from MS <a href="https://docs.microsoft.com/en-us/sharepoint/dev/sp-add-ins/using-csom-for-dotnet-standard" rel="nofollow noreferrer">https://docs.microsoft.com/en-us/sharepoint/dev/sp-add-ins/using-csom-for-dotnet-standard</a>, <strong>Save/OpenBinaryDirect</strong> methods is not available for .NET core app, they suggest to use regular file API, so what is the alternative way to read/write files stored in SharePoint online? what is the regular file API? does anyone done this? any example code/documentation?</p>
  <p><a href="https://i.stack.imgur.com/nuyGG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nuyGG.png" alt="enter image description here" /></a></p>