Question

I have this in my WCF domain service:

    public List<string> GetTop5ActiveUsersByManagementMessages()
    {
        return this.ObjectContext.Logs
        .Where(w => w.Message == "Created User" || 
               w.Message == "Removed User" || w.Message == "Updated User")
        .GroupBy(w => w.Username)
        .OrderByDescending(g => g.Count())
        .Select(s => s.Key)
        .Take(5).ToList();
    }

Now I want to load it in my view model like this:

context.Load(context.GetTop5ActiveUsersByManagementMessages(), 
             GetActiveUsersCallback, true);

However, it complains about needing to specify the types explicitly. How do I fix this?

Answer 1

‘Non-entity queries’ aren’t actually a thing. What you’ve written is an ‘Invoke’ operation. You just need to call it differently from the client.

context.GetTop5ActiveUsersByManagementMessages(GetActiveUsersCallback, null)