Generate problem details inside exception filter in asp net core 6 web api

Introduction

ASP.NET is a popular programming used for building web applications. In this article, we will discuss how to generate problem details inside an exception filter in ASP.NET Core 6 Web API.

Exception Filters in ASP.NET Core

Exception filters in ASP.NET Core are used to handle exceptions that occur during the execution of a web API request. They provide a way to the error response sent back to the .

To generate problem details inside an exception filter, we can use the class provided by ASP.NET Core. This class allows us to create a standardized error response with detailed information about the problem.

Example

Let's consider a scenario where we have an exception filter that handles exceptions thrown during the execution of a web API request. We want to generate problem details with additional information about the exception.


[]
[Route("api/[controller]")]
public class MyController : 
{
    [HttpGet("{id}")]
    public  Get(int id)
    {
        try
        {
            // Code that may throw an exception
        }
         (Exception ex)
        {
            var problemDetails = new ProblemDetails
            {
                Title = "An error occurred",
                Detail = ex.Message,
                Status = (int)HttpStatusCode.InternalServerError
            };

            return new ObjectResult(problemDetails)
            {
                StatusCode = problemDetails.Status
            };
        }
    }
}

In the above example, we have a controller action that may throw an exception. Inside the catch block, we create a new instance of the ProblemDetails class and populate it with the necessary information.

The Title property represents a short summary of the problem, while the Detail property provides additional details about the exception. The Status property indicates the HTTP status code to be returned.

We then return an ObjectResult with the problemDetails object as the response body. We also set the status code of the response to the Status property of the problemDetails object.

Conclusion

In this article, we discussed how to generate problem details inside an exception filter in ASP.NET Core 6 Web API. By the ProblemDetails class, we can create standardized error responses with detailed information about the problem. This helps in providing a better user experience and troubleshooting potential issues in the web application.

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