Blog: Angular 2

NSwag Tutorial: Generate an Angular 2 TypeScript client from an existing ASP.NET Web API web assembly

October 1, 2016, (updated on October 7, 2016), 6 comments, Software Development

This tutorial shows how to automatically generate an Angular 2 TypeScript client with the NSwag Swagger toolchain. You can use this client in your Angular 2 SPA (single-page application) to consume the web services of an existing Web API project. The metadata for the client generator will be loaded from an existing .NET assembly which contains your Web API controller classes. The NSwag project provides many other TypeScript templates (for targeting other JS frameworks) and also a C# client generator. For ASP.NET Core projects, I recommend to use the middleware to generate the Swagger spec (there are some problems loading […] Read more...

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Angular 2: Convert input values to the correct type with a TypeScript property decorator

February 24, 2016, (updated on March 1, 2016), 8 comments, Software Development

I recently played with Angular 2 and found an uncomfortable problem: Declaring an input property with a TypeScript type does not guarantee that the input value will always be of this type. This is because the Angular framework may update an input with a wrongly typed value and thus is able to “circumvent” the TypeScript type system. As a result, you may end up with strange and unexpected runtime errors. Let’s have a look at this simple Angular component: @Component({ selector: "my-component" }) export class MyComponent { @Input() enabled = true; showValue() { alert(typeof this.enabled); } } As shown in […] Read more...

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