Add OData cast via c# graph sdk

Question

I want to execute the following query:
GET https://graph.microsoft.com/beta/groups/{id}/transitiveMembers/microsoft.graph.user?$count=true&$select=id

Is there a way to add this OData cast (microsoft.graph.user) to the query via c# sdk?

What I was able to do is:

GraphServiceClient.
Groups[{id}].
TransitiveMembers.
Request().
Select(member => new { member.Id }).
GetAsync();

Thanks,
Guy

Answer 1

The Graph.Community library now (a/o v3.32) contains an extension method to add the OData cast to the url.

The test method mocks the request for a members groups, filtered to only include directory roles:

[Fact]
public void WithODataCastUpdatesUrl()
{
  // ARRANGE
  var oDataCast = "microsoft.graph.directoryRole";
  var expectedUrl = "/me/memberOf/microsoft.graph.directoryRole";

  // ACT
  using (var gsc = GraphServiceTestClient.Create())
  {
    var request = gsc.GraphServiceClient.Me.MemberOf.WithODataCast(oDataCast).Request();
    var actualUrl = request.RequestUrl;

    // ASSERT
    Assert.True(actualUrl.IndexOf(expectedUrl) > -1, "RequestUrl does not include odata cast  value");
  }
}

https://github.com/microsoftgraph/msgraph-sdk-dotnet-contrib/blob/b7ff25ca9a1aa0e05ff399916e3265c3600b398d/test/BaseRequestBuilderExtensionTests.cs#L37

The library is on Nuget: https://www.nuget.org/packages/Graph.Community/

Answer 2

Hey, I assume you want to get a user. There are multiple ways, 1 of which is to filter. Below I have demonstrated it by filtering per name. You can do so on other properties as well.
graphClient.Users.Request().Filter("startsWith(displayName, 'N')").GetAsync()

Let me know if for any queries.

Answer 3

The new version of the Microsoft Graph .NET SDK v5 enables OData casting.
You can easily get User object by the following:

var usersInGroup = await graphServiceClient  
    .Groups["group-id"]  
    .Members  
    .User  
    .GetAsync();  

Also, you can use the upgrade-guide to help you with any migration info you might need.