How to enable CORS in ASP.NET Core

Question

I am trying to enable cross origin resources sharing on my ASP.NET Core Web API, but I am stuck.

The EnableCors attribute accepts policyName

Answer 1

public void ConfigureServices(IServiceCollection services)
{
    services.AddCors(options =>
    {
        options.AddPolicy("AllowAnyOrigin",
            builder => builder
            .AllowAnyOrigin()
            .AllowAnyMethod()
            .AllowAnyHeader());
    });

    services.Configure(options => {
        options.Filters.Add(new CorsAuthorizationFilterFactory("AllowAnyOrigin"));
    });            
}