Blog: 2015 October

Avoid wrongly scoped injections with a custom Ninject kernel

October 22, 2015, (updated on February 19, 2016), Software Development

I’m currently working on a large project where different teams implement assemblies which are consumed by other teams. We use Ninject for dependency injection: Each assembly has a Ninject module class which registers the available interface-to-implemenation bindings. At the moment, the consumers of these assemblies just know what module classes to load and what interfaces to inject into own objects like ASP.NET controllers or own service objects, but nothing about the scope of the injected objects. Recently we had some nasty runtime errors, because a consumer of one of these assemblies injected a per-request scoped object into a singleton-scoped object. […] Read more...

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Getting started with Entity Framework Code First Migrations

October 12, 2015, (updated on October 17, 2015), Software Development

The following post describes the steps to setup and use Entity Framework Code First Migrations. For more information read this Microsoft page. The sample application shown in this article can be found on GitHub. Initial setup Listed below are the steps to setup a new project with an Entity Framework context, an entity class and an initial migration: Create a new data access project (C# library project) in your solution Open the Package Manager Console in the Visual Studio menu Tools > NuGet Package Manager > Package Manager Console. In the console window, select the previously created data access project […] Read more...

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How to implement an enum with string values in TypeScript

I currently work an a single-page application (SPA), where we use TypeScript to access web services. In some places, the sent and received data structures use enums to describe the range of allowed values. I tried to use the enums from TypeScript to access the web services in a strongly typed way: export interface PersonDto { language: Language; } export enum Language { English, German, French, Itialian } When serializing a PersonDto instance to JSON, the language field is converted to a number and not a string as required by the web service API: var person = <PersonDto> { language: […] Read more...

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