Where and How to get Claims on Login

I have a Blazor Server app and have added the Login and Logout views. I’m trying to figure out where to access the claims when a user logs in. I am guessing the Login.cshtml page but there is no OnInitializedAsync method available since the Login view inherits from the PageModel class. I need to be able to get information from the claims and store them in localStorage so they are available to the rest of the application.

Am I going about this the right way? I initially put the following code on a Razor component (index.razor) and it worked fine but this isn’t the ideal place for it. Thoughts?

protected override async Task OnInitializedAsync()
        var state = await AuthState.GetAuthenticationStateAsync();

        Username = state.User.Identity.Name ?? string.Empty;
        UserId = state.User.Claims
            .Where(c => c.Type.Equals(@"http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier"))
            .Select(c => c.Value)
            .FirstOrDefault() ?? string.Empty;

        Email = state.User.Claims
            .Where(c => c.Type.Equals(@"https://myapi.com/email"))
            .Select(c => c.Value)
            .FirstOrDefault() ?? string.Empty;

        var meta = state.User.Claims
            .Where(c => c.Type.Equals(@"https://myapi.com/metadata"))
            .Select(c => c.Value)
        Metadata = JsonConvert.DeserializeObject<Dictionary<string, string>>(meta);

        await base.OnInitializedAsync();