Swagger UI Web Api documentation Present enums as strings?

Question

Is there a way to display all enums as their string value in swagger instead of their int value?

I want to be able to submit POST actions and put enums according to

Answer 1

For ASP.NET Core 3 with the Microsoft JSON library (System.Text.Json)

In Startup.cs/ConfigureServices():

services
    .AddControllersWithViews(...) // or AddControllers() in a Web API
    .AddJsonOptions(options => 
        options.JsonSerializerOptions.Converters.Add(new JsonStringEnumConverter()));

For ASP.NET Core 3 with the Json.NET (Newtonsoft.Json) library

Install the Swashbuckle.AspNetCore.Newtonsoft package.

In Startup.cs/ConfigureServices():

services
    .AddControllersWithViews(...)
    .AddNewtonsoftJson(options => 
        options.SerializerSettings.Converters.Add(new StringEnumConverter()));
// order is vital, this *must* be called *after* AddNewtonsoftJson()
services.AddSwaggerGenNewtonsoftSupport();

For ASP.NET Core 2

In Startup.cs/ConfigureServices():

services
    .AddMvc(...)
    .AddJsonOptions(options => 
        options.SerializerSettings.Converters.Add(new StringEnumConverter()));

Pre-ASP.NET Core

httpConfiguration
    .EnableSwagger(c => 
        {
            c.DescribeAllEnumsAsStrings();
        });