How do I use SharePoint Rest API in C# .NET Framework using Client ID and Client Secret?

Question

Is there any way to authenticate an application with SharePoint rest API like Graph API using Client ID and Client Secret? I wanna use SharePoint rest API in my console application.

Answer 1

This works for me:

In Azure Active Directory I have configured permissions for SharePoint API.

In my code I have scopes defined this way:

var scopes = new [] {"https://<tenantName>.sharepoint.com/allsites.manage"};

var clientApp = ConfidentialClientApplicationBuilder.Create($"{clientId}")
            .WithAuthority($"https://login.microsoftonline.com/{tenantId}")
            .WithClientSecret($"{clientSecret}").Build();

// acquire a token for the app
AuthenticationResult result = null;
try
{
    result = await clientApp.AcquireTokenForClient(scopes)
                             .ExecuteAsync();
}
catch (MsalUiRequiredException ex)
{
...
}
catch (MsalServiceException ex)
{
...
}