Always have error “The ObjectContent 1 type failed to serialize the response body…”

Question

I use Web api to retrieve data from the database. I only have 1 table \"tblMessage\" and want to get data from that table.

I set everything up but then when I run th

Answer 1

I had the same problem and this is the solution I found

After updating the Entity Data Model you have to set ProxyCreationEnabled to false in your Model

Configuration.ProxyCreationEnabled = false;

My example:

public partial class EventsEntities : DbContext
{
        public EventsEntities()
            : base("name=EventsEntities")
        {
            Configuration.ProxyCreationEnabled = false;
        }
        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            throw new UnintentionalCodeFirstException();
        }
}