As learnt in the previous article, MediatR is a tool / library which essentialy can make your Controllers thin and decouple the functionalities to a more message-driven approach. Then, we learnt about it’s importance while implementing the CQRS Pattern in ASP.NET Core Applications, which is commands and queries Responsibility Segregation. When configuring the dependency injection AddSingleton New Solution, select 1 we can not access the HttpContext outside a controller, however, we can use the HttpContextAccessor to access the current session outside a controller with ip address 3 cs 类ConfigureServices 方法中注入IHttpContextAccessor; services cs 类ConfigureServices 方法中. how to replace starter motor. Set of extensions to run multiple MediatR commands sequentially. In a transaction scope, just one by one or when you need to fire a notification just after a command succeded/failed. ... var injectedPrincipal = req.HttpContext.User; That's it; Releases 8.0.8 Feb 12, 2020 8.0.7 Feb 12, 2020 8.0.6 Feb 12, 2020 8.0.5 Feb 12, 2020. In this short post I describe a handy error-handling middleware, created by Kristian Hellang, that is used to return ProblemDetails results when an exception occurs.. ProblemDetails and the [ApiController] attribute. ASP.NET Core 2.1 introduced the [ApiController] attribute which applies a number of common API-specific conventions to controllers. In ASP.NET Core 2.2 an. Option 2: create a fake HttpContext and set it. If for some reason you’re forced to choose Option 2, here’s an example of how to create a fake HttpContext : [code lang=”csharp” light=”false”] var httpRequest = new HttpRequest(filename, domainUrl, null); var stringWriter = new StringWriter(); var httpResponce = new HttpResponse. When MediatR asks for RequestPostProcessor -instances, and the implementation depends on something with the per request lifetime, the IoC container throws an exception, saying that there is no scope manager available at this point. Again this is because HttpContext .Current is no longer available. Contributor Author vegar commented on May 11, 2018. When MediatR asks for RequestPostProcessor -instances, and the implementation depends on something with the per request lifetime, the IoC container throws an exception, saying that there is no scope manager available at this point. Again this is because HttpContext .Current is no longer available. Contributor Author vegar commented on May 11, 2018.