VersioningExtension.cs

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Versioning;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SampleWebApiAspNetCore.Service.Helpers
{
    public static class VersioningExtension
    {
        public static void AddVersioning(this IServiceCollection services)
        {
            services.AddApiVersioning(
               config =>
               {
                   config.ReportApiVersions = true;
                   config.AssumeDefaultVersionWhenUnspecified = true;
                   config.DefaultApiVersion = new ApiVersion(1, 0);
                   config.ApiVersionReader = ApiVersionReader.Combine(new UrlSegmentApiVersionReader(),
                                                                                        new HeaderApiVersionReader("x-api-version"),
                                                                                        new MediaTypeApiVersionReader("x-api-version"));
               });
           services.AddApiVersioning(x =>
            {
                x.DefaultApiVersion = new ApiVersion(1, 0);
                x.AssumeDefaultVersionWhenUnspecified = true;
                x.ReportApiVersions = true;
                //x.ApiVersionReader = new HeaderApiVersionReader("x-api-version");  
            });
        }
    }
}