How to stop self-referencing loop in .Net Core Web API?

Question

I\'m having some issues which I\'m guessing are related to self-referencing using .NET Core Web API and Entity Framework Core. My Web API starting choking when I added .Inc

Answer 1

If you are using ASP.NET Core 3.0, and experience that problem please install the NuGET package: Microsoft.AspNetCore.Mvc.NewtonsoftJson 3.0.0.

To replace the new System.Text.Json which does not yet have the Reference Loop Handling do this in the Startup.cs, make sure that in the ConfigureServices, is included:

If using the latest .Net Core 3.0 way:

services.AddControllers().AddNewtonsoftJson(options =>
{
    options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
});

or the old way:

services.AddMvc(option => option.EnableEndpointRouting = false)
       .AddNewtonsoftJson(options => 
                 options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore)
       .SetCompatibilityVersion(CompatibilityVersion.Version_3_0);