asp.net core webapi - Microsoft Graph API - generate the filter query for the extension attribute

Question

I have create a extension/Custom attribute called extensions_{b2cextensionappid}_IsDemoAccount in the Azure AD B2C to flag the user is a demo user.

I have tried to create filter query to select all the demo users in the Azure AD B2C directory using GraphServiceClient in dotnet core API. But it is not working.

   var result = await graphClient.Users
            .Request()
            //.Filter($"identities/any(c:c/issuerAssignedId eq 'test2' and c/issuer eq '{config.Value.TenantId}')")
            .Filter($"Extensions/any(c:c/{IsTemporaryAccount} eq true')")
            .Expand("Extensions")

Is there any way to generate the filter query for the extension attribute? I did not find any samples in the Microsoft documentation.

Please provide any solutions or an reference to achieve this?

question from:https://stackoverflow.com/questions/65644603/microsoft-graph-api-generate-the-filter-query-for-the-extension-attribute

Answer 1

You confuse Create extensionProperty and Create open extension.

extension_{b2cextensionappid}_IsDemoAccount is actually extensionProperty rather than open extension.

So you should use the following code to filter users.

        var users = await graphClient.Users
        .Request()
        .Filter($"extension_{b2cextensionappid}_IsDemoAccount eq true")
        .GetAsync();

Please note the extension property should be extension_**_** rather than extensions_**_**.