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https://github.com/nikoo-asadnejad/responsebase

ResponseBase is a return type of a service or api which can be implicitly converted to objectResult
https://github.com/nikoo-asadnejad/responsebase

api csharp csharp-code dotenetcore dotnet dotnet-core response response-management rest-api restful-api result-pattern result-type resultbuilder resultpattern

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ResponseBase is a return type of a service or api which can be implicitly converted to objectResult

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# ResponseBase Pattern in C#



`ResponseBase` is a generic return type designed for use in services or APIs. It standardizes the way responses are handled, encapsulating key elements of the response in a structured format that improves readability, maintainability, and usability across the application.



## Features of ResponseBase



The `ResponseBase` class includes the following components:



- **Status**: Represents the status of the operation, typically indicating success, failure, or any other defined state.

- **Message**: Provides additional context or information about the operation, such as error messages or success confirmations.

- **Data**: Contains the payload of the response, allowing any type of data to be returned (generic type `T`).



## Implicit Conversions



`ResponseBase` is designed with flexibility in mind, allowing implicit conversions between various types:



1. **Conversion to ObjectResult**: `ResponseBase` can be implicitly converted to an `ObjectResult`, making it easy to return standardized responses from API controllers in ASP.NET Core.

   

2. **Conversion to HttpStatusCodes**: `ResponseBase` can also be implicitly converted to HTTP status codes, simplifying the mapping between service results and HTTP responses.



3. **Conversion from HttpStatusCodes and Tuples**: Both HTTP status codes and tuples can be implicitly converted to `ResponseBase`. This allows you to quickly create `ResponseBase` instances from common status codes or value tuples, making the API easier to use and reducing boilerplate code.



## Benefits of Using ResponseBase



- **Consistency**: By using `ResponseBase`, all services and APIs return responses in a consistent format, making it easier to handle responses across the application.

  

- **Readability**: The structure of `ResponseBase` makes it clear what the status of a response is, what message (if any) accompanies it, and what data is being returned.

  

- **Error Handling**: Centralizes error handling by encapsulating errors within the `Status` and `Message` fields, providing a clear and uniform way to handle exceptions and errors.



- **Extensibility**: The generic type parameter `T` allows `ResponseBase` to be used with any data type, making it highly flexible and suitable for a wide range of applications.



## Example Usage



### Returning a Response from a Service



Here’s a simple example of using `ResponseBase` in a service method:



```csharp

public ResponseBase GetUserById(int userId)

{

    var result = new ResponseBase();

    var user = _userRepository.FindById(userId);

    if (user == null)

    {

        return result.NotFound(); // Sets status to NotFound and returns

    }

    return result.Success(user); // Sets status to Success and returns the user data

}

```



Returning a Response from an API Controller :



In an ASP.NET Core API controller, you can return a ResponseBase directly due to its implicit conversion to ObjectResult:

```csharp

[HttpGet("{id}")]

public IActionResult GetUser(int id)

{

      var response = _userService.GetUserById(id);

      return response; // Implicitly converts to ObjectResult

}

```



You can also convert HTTP status codes directly into ResponseBase:



```csharp

public ResponseBase DeleteUser(int userId)

{

    var result = _userRepository.Delete(userId);

    if (!result)

    {

        return HttpStatusCode.BadRequest; // Converts to ResponseBase with appropriate status

    }



    return HttpStatusCode.OK; // Converts to ResponseBase with status success

}

```