ASP.NET 5 Web Api Controller with multiple get methods
I have two other posts on multiple GET methods, both for Web Api 2, the first shows how to use routes like ‘http://…/api/values/geta’ and the second shows ‘http://…/api/values/22’ or...
View ArticleWeb API 2 and ninject, how to make them work together
Full source code to download. I’ve been using ninject for a few years, but every time I use it with Web Api I hit some problem and they usually stem from not including the right nuget packages, not...
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Getting Web API Exception Details from a HttpResponseMessage
The Problem It’s hard to get the details of an exception from a Web Api response when calling Web Api from a C# program. (Skip to the solution if you don’t care about the background), it even handles...
View ArticleWeb API 2 Controller with multiple get methods
I have two other posts on multiple GET methods, one for ASP.NET 5 Web Api, and another for Web Api 2. It seems that every version of Web API changes how it handles default routes or route prefixes or...
View ArticleFluent Validation with Web Api 2
Full source code here. I wrote blog post in 2015 on using the Fluent Validation NuGet package for complex validation needs. In the post the validator checked that a create person request had at least...
View ArticleDownloading an in-memory file using Web Api 2
Download full source code At first you think it’s going to be easy to download a file from Web Api, but as I discovered, it was not. In my case I wanted to load data from the database, perform some...
View ArticleWeb API 2 Controller with multiple GET methods – part 2
I have two other posts on multiple GET methods, one for ASP.NET 5 Web Api, and another for Web Api 2. Download full source code. A few months ago I wrote a post explaining how to create a controller...
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Web Api 2 Without MVC
Download full source code. When building a Web Api 2 application there is much unneeded MVC baggage that comes along with it. To start with all the css, html and javascript can go, then most of the...
View ArticleA simple Polly example with WebApi 2
Download full source code. If you are calling APIs and you haven’t heard about The Polly Project, you should check it out. It helps take care of many common problems like unreliable connections,...
View ArticleReusing Polly Policies with Dependency Injection
Download full source code. In my previous post “A simple Polly example with WebApi 2” I showed how to make a request to an unreliable endpoint protected by a Polly retry policy. For more on Polly see...
View ArticleLetting a request fail with Polly
Polly is fantastic for transparently retrying a request but there is always a point at which you must give up. Here you have a choice, let the request fail and inform the original caller or use the...
View ArticleRe-authorization and onRetry with Polly
Full source code available here. In a previous post I showed how to use Polly to make a simple call, retrying in the event of failure. In another I showed how to let a request fail and process the...
View ArticleReturning default values from a failed web request with Polly Fallbacks
Full source code available here. In previous posts on Polly I showed how to use a simple retry, and a retry with a delegate that is called before the request is retried. In this post I will show how...
View ArticleFluent Validation in ASP.NET Core
Full source code available here. I have written about Fluent Validation a couple of times. There is a new library available for .Net Core. How to return to validation messages back to the caller is not...
View Article.NET Core Web Api Routing
Full source code available here. Routing in .NET Core Web Api (1.1 and 2) is a little different than in earlier versions. I’ve written about this a few times, you can find those posts here. In this...
View Article.Net Core Multiple Get Methods with the Action Method Selector Attribute
Full source code available here. In .Net Core Web Api it is not possible for the routing mechanism to distinguish between the following action methods. public string GetSomething(int id, int something)...
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Unit Testing .NET Core 2 Web Api
Full source code available here. Unit testing Web API controllers in .NET Core 2 is very easy. I have very simple GET and POST methods. [Route("api/[controller]")] public class ValuesController :...
View ArticleEntity Framework Core 2 Unit Testing in .NET Core 2
Full source code available here. Unit testing Entity Framework used to be quite a chore, but over the past few years it has become significantly easier. In this post I’m going to show you how to use...
View ArticleHttpContent ReadAsAsync with .NET Core 2
Full source code available here. If you are used to using HttpContent.ReadAsAsync you might be surprised to learn that it is missing from .NET Core 2. You can try adding Microsoft.AspNet.WebApi.Client...
View ArticleReusing HttpClient with Dependency Injection
Full source code available here. If you are using HttpClient to make requests for you, you might have come across some articles discussing how to reuse HttpClient. They strongly advocate for using a...
View ArticleUsing the Polly Timeout when making a Http Request
Full source code available here. When making remote service requests the remote side will sometimes take longer than acceptable to respond. You have a few choices in handling this. 1. Put up with it,...
View ArticleUsing an mdf file database with Entity Framework Core 2 in Visual Studio 2017
Full source code available here. If you want to play around with Entity Framework it can be a little frustrating to create a complex database with a lot of sample data. Instead, you could download the...
View ArticleUsing Other Verbs with Web API
Full source code available here. You will often use the GET verb when making requests to an API. You have probably used it like this – www.example.com/person/ or www.example.com/person/1 or...
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Alter response header in Web API to return machine name
Full source code available here. I recently hit a problem where I was getting incorrect responses from a server behind a load balancer. Looking at the logs didn’t help because there was no error. It...
View ArticleSelectively Caching a HttpResponseMessage with Polly – caching series 1/3
Full source code here. When I give talks on Polly I show how to use it in a Web API application that calls another Web Api application. I give a simple example of how to use the cache policy where I...
View ArticlePassing Configuration Options Into Middleware, Services and Controllers in...
Full source code here. I recently hit a problem where I needed to reload configuration settings as they changed, fortunately this is relatively straightforward when using the IOptionsMonitor, in .NET...
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