[GetUserAsync with IdentityServer Fix] Let you use the UserManager.GetUserAsync function again #Blazor #IdentityServer

GetUserAsync_Fix.cs

/* Add following code to the server Startup.cs file */
public void ConfigureServices(IServiceCollection services)
{
	// ...
	
	services.AddIdentityServer()
		.AddApiAuthorization<ApplicationUser, ApplicationDbContext>();

	// Add this configuration of the IdentityServer options
	// https://github.com/dotnet/AspNetCore.Docs/issues/17517#issuecomment-605993247
	services.Configure<IdentityOptions>(options => options.ClaimsIdentity.UserIdClaimType = ClaimTypes.NameIdentifier);
}

// GetUserAsync works now within a controller
var user = await _userManager.GetUserAsync(User);