Creating RESTful APIs with ASP.NET Core Web API
RESTful APIs have become the standard for building web services due to their simplicity and scalability. In this post, we will explore how to create RESTful APIs using ASP.NET Core Web API.
Setting up ASP.NET Core Web API
To get started, you need to create a new ASP.NET Core Web API project. You can do this by running the following command in the terminal:
dotnet new webapi -n MyWebApi
This command will create a new ASP.NET Core Web API project named 'MyWebApi'.
Creating a Controller
Next, you need to create a controller to handle incoming HTTP requests. Create a new controller named 'SampleController' by running the following command:
dotnet add controller SampleController
This command will generate a new controller file with sample code. Here's an example of a simple GET endpoint that returns a list of values:
[ApiController]
[Route("api/[controller]")]
public class SampleController : ControllerBase
{
[HttpGet]
public ActionResult> Get()
{
return new string[] { "value1", "value2" };
}
}
Running the Web API
Finally, you can run the ASP.NET Core Web API project by executing the following command:
dotnet run
Once the project is running, you can test the API endpoints using tools like Postman or curl.
Common Use Cases
RESTful APIs are commonly used for tasks such as:
- Fetching data from a database
- Creating, updating, or deleting resources
- Integrating with third-party services
Importance in Interviews
Knowledge of creating RESTful APIs with ASP.NET Core Web API is highly sought after in technical interviews for roles such as:
- Backend Developer
- Full-stack Developer
- API Developer
Conclusion
In this post, we covered the basics of creating RESTful APIs with ASP.NET Core Web API. By following these steps, you can build scalable and efficient web services for your applications.
