Download and Upload files via Graph API from SharePoint lists and document libraries. C# .NET6

Question

Hi,

I want to download files from my SharePoint Site (Not One Drive). And with the help of GraphServiceClient, I am able to get SiteID, ListID and also itemId.

Now how can I upload and download files to this library with the help of Graph API (GraphServiceClient).

This is how I am creating object of GraphServiceClient;

ClientSecretCredential clientSecretCredential = new(tenantID, clientID, clientSecret);
                GraphServiceClient graphClient = new(clientSecretCredential);

Answer 1

Hi @ASR

It is recommended to browse the official documentation here, which provides code examples for your reference：

Here is Download file:

// Code snippets are only available for the latest version. Current version is 5.x
var graphClient = new GraphServiceClient(requestAdapter);
await graphClient.Drives["{drive-id}"].Items["{driveItem-id}"].Content.GetAsync();

Here is upload file:

https://learn.microsoft.com/en-us/graph/api/driveitem-createuploadsession?view=graph-rest-1.0

https://stackoverflow.com/questions/41285403/upload-file-to-sharepoint-drive-using-microsoft-graph

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Best Regards

Cheng Feng