Self referencing loop detected with type 'System.Data.Entity.DynamicProxies.XXXXXX'

under the edmx.context.cs add the below two lines  inside the edmx constructor

this.Configuration.LazyLoadingEnabled = false;

this.Configuration.ProxyCreationEnabled = false;

public YourDBEntities(): base("name=YourDBEntities")

{

       this.Configuration.LazyLoadingEnabled = false;

       this.Configuration.ProxyCreationEnabled = false;

}