sql-server-samples/samples/features/json/Dapper-Orm/Startup.cs

using Dapper;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using System.Data;
using System.Data.SqlClient;

namespace ProductCatalog
{
    public class Startup
    {
        public Startup(IHostingEnvironment env)
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(env.ContentRootPath)
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
                .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
                .AddEnvironmentVariables();
            Configuration = builder.Build();
        }

        public IConfigurationRoot Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            // Map sting[] and object properties in model to JSON column in database.
            SqlMapper.AddTypeHandler(typeof(string[]), new StringArrayJsonMapper());
            SqlMapper.AddTypeHandler(typeof(object), new ObjectJsonMapper());

            string ConnString = Configuration["ConnectionStrings:ProductCatalog"];
            services.AddTransient<IDbConnection>(_ => new SqlConnection(ConnString));

            // Add framework services.
            services.AddMvc();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            loggerFactory.AddConsole(Configuration.GetSection("Logging"));
            loggerFactory.AddDebug();

            app.UseStaticFiles();
            app.UseMvc();
        }
    }
}