Upload a file on one drive using microsoft graph api in c# asp.net

Question

Hello,

I have one question,I want to upload a file on one drive and it is worked properly in console application but not  in web application. Please help me

here below is my sample console application code.

<--------------------------------------------------------------------------------------->

 var clientID = "
            var clientSec = "****";
            var tenant = "****";
            var userID = "***";

            var filePath = @"C:\onedrivedoc\LRN DRAFT retail (1).docx";
            var fileName = "LRN DRAFT retail (1).docx";

            IConfidentialClientApplication confidentialClientApplication = ConfidentialClientApplicationBuilder
                .Create(clientID)
                .WithTenantId(tenant)
                .WithClientSecret(clientSec)
                .Build();

            ClientCredentialProvider authProvider = new ClientCredentialProvider(confidentialClientApplication);
            var graphClient = new GraphServiceClient(authProvider);

            StreamReader reader = System.IO.File.OpenText(filePath);

            var uploadedFile = graphClient.Users[userID].Drive.Root.ItemWithPath(fileName).Content.Request().PutAsync

Answer 1

To grant Permission for your App registration, you require to follow the next steps:

1. In the navigation pane, click API permissions.
2. Click Add a permission. The Request API permissions pane appears.
3. Click Microsoft Graph tile.
4. Click Application permissions.
5. Select the following permissions:
   • Directory: Directory.Read.All
   • Files: Files.ReadWrite.All
   • User: User.Read.All
   • Notes: Notes.ReadWrite.All
   • Application: Application.ReadWrite.All
6. Click Add permissions.
7. Click Add a permission. The Request API permissions pane appears.
8. Click Grant admin consent for tenant_name.
9. Click Yes.

Hope this helps!

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Answer 2

hi I am trying to save the file in OneDrive but getting an error in the below cord.

        ClientCredentialProvider authProvider = new ClientCredentialProvider(confidentialClientApplication);

        var graphClient = new GraphServiceClient(authProvider);