JSON.NET Error Self referencing loop detected for type

Question

I tried to serialize POCO class that was automatically generated from Entity Data Model .edmx and when I used

JsonConvert.SerializeObject 

Answer 1

For .NET Core 3.0, update the Startup.cs class as shown below.

public void ConfigureServices(IServiceCollection services)
{
...

services.AddControllers()
    .AddNewtonsoftJson(
        options => options.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore
    );

...
}

See: https://devblogs.microsoft.com/aspnet/asp-net-core-updates-in-net-core-3-0-preview-5/