MediatR 7.0.0 Released

Release notes: MediatR 7.0.0 MediatR.Extensions.Microsoft.DependencyInjection 7.0.0 It's a major release bump because of a breaking change in the API of the post-processor. Enjoy! [Read More]

AutoMapper 8.1.0 Released

Today we released AutoMapper 8.1.0: Upgrade Guide for 8.0 Release Notes AutoMapper 8.1 adds a major new feature - attribute-based maps. Attribute maps let you easily declare maps on destination types when you have straightforward scenarios. Instead of: public class OrderProfile { public OrderProfile() { CreateMap<Order, OrderIndexModel>(); CreateMap<Order, OrderEditModel>(); CreateMap<Order, OrderCreateModel>(); } } You can declare your type maps directly on [Read More]

Sharing Context in MediatR Pipelines

MediatR, a small library that implements the Mediator pattern, helps simplify scenarios when you want a simple in-memory request/response and notification implementation. Once you adopt its pattern, you'll often find many other related patterns start to show up - decorators, chains of responsibility, pattern matching, and more. Everything starts with a very basic implementation - a handler for a request: public interface IRequestHandler<in TRequest, TResponse> where [Read More]

The Curious Case of the JSON BOM

Recently, I was testing some interop with Azure Service Bus, which has a rather useful feature when used with Azure Functions in that you can directly bind JSON to an custom type, to do something like: [FunctionName("SaySomething")] public static void Run([ServiceBusTrigger("Endpoints.SaySomething", Connection = "SbConnection")]SaySomething command, ILogger log) { log.LogInformation($"Incoming message: {command.Message}"); } As long as we have valid JSON, everything should "just work". However, when [Read More]

AutoMapper's Design Philosophy

While a lot of people use AutoMapper, and love it, I meet just as many people that hate it. When I hear their stories, it becomes clear to me that it's not that AutoMapper was "abused" per se, but that it was used without understanding why AutoMapper exists and what problems it was designed to solve. AutoMapper originated at the beginning of a large MVC application way back in the [Read More]