Thoughts on .Net & Coding

ASP.NET Core Web APIs and controllers often need to serialize JSON data to JavaScript clients. On the server side your C# classes typically use Pascal Casing to name properties whereas JavaScript code often uses Camel Casing for property names. Therefore it would be worthwhile to take a quick look at how ASP.NET Core serializes data in JSON format from Web API and MVC controllers.

In the previous part of this article and video series you learned about various types of decorators. Continuing our learning further this part discusses how generics can be utilized in TypeScript. If you are a C# developer chances are you already know generics. You can use that concept in TypeScript also. To that end this article discusses a few examples that show how to put generics to use in TypeScript classes and methods.

In the previous part of this article and video series you were introduced to TypeScript decorators. You know that decorators come in different flavors such as class, property, method, accessor, and parameter decorators. You also learned to create class decorators. Continuing our learning further this part shows you how to create property and method decorators.

In the previous part of this article and video series you learned about TypeScript inheritance. In this article you will learn about a feature of TypeScript that allows you to annotate and modify classes and class members. This feature is called Decorators. Decorators is an experimental feature and you need to enable them in your TypeScript configuration file. You will find TypeScript decorators analogous to C# attributes in that they form the metadata of a class and class members.

Object oriented programming languages such as C# allow you to inherit functionality from base class. TypeScript also offers inheritance capabilities so that your classes can inherit from other classes. TypeScript doesn't support multiple inheritance (although your class can implement multiple interfaces). You can also create abstract classes - classes that can't be instantiated on their own; they must be inherited in other classes. In this article you will learn all these aspects of TypeScript inheritance.

In the previous part of this article and video series you developed a TypeScript class that invokes an ASP.NET Core Web API using XMLHttpRequest object. Recollect from the previous part that the EmployeeApiClient class expects a few callback functions. These callback functions receive the response returned by the Employees Web API and display it on to the web page. In this part you will create another TypeScript class that houses those callback functions. You will also create the Employees Web API that performs the CRUD operations. Finally, you will test the functioning of both the TypeScript classes (and the Employees Web API) by calling their methods from a web page.

In the previous part of this series you learned about TypeScript functions. Now it's time to peek into some more interesting features. To that end, this part discuses three of them - interfaces, classes, and inheritance. You will build a fully functional class that helps you invoke an ASP.NET Core Web API. You then perform CRUD operations using the class developed in this exercise.

This is a companion video to "Essentials of TypeScript Functions" and shows various examples discussed in the article.