OnResultExecutionAsync

OnResultExecutionAsync is a method in the ASP.NET Core framework, specifically within the Microsoft.AspNetCore.Mvc.Filters namespace. It is an asynchronous method that is part of the IResultFilter interface. This interface allows for the execution of code before and after the result of an action method is executed.

The OnResultExecutionAsync method is called after the result of an action method has been executed. It provides an opportunity to modify the result or perform additional operations before the result is sent to the client. This method is particularly useful for tasks such as logging, modifying the response, or adding custom headers.

The method signature for OnResultExecutionAsync is as follows:

public Task OnResultExecutionAsync(ResultExecutingContext context, ResultExecutionDelegate next);

The ResultExecutingContext parameter provides information about the result that is about to be executed, including the action context, the result, and any metadata. The ResultExecutionDelegate parameter is a delegate that represents the next middleware in the pipeline, allowing the method to call the next middleware in the pipeline if needed.

In summary, OnResultExecutionAsync is a powerful tool in ASP.NET Core for performing operations after the result of an action method has been executed. It provides a flexible and extensible way to modify the result or perform additional tasks before the response is sent to the client.