ASP.NET Core API: Return 200 Status Code While Processing Tasks - Fire-and-Forget

To return a 200 status code in an ASP.NET Core API while continuing to process a task, you can use the `IActionResult` interface along with the `Ok` method.

Here's an example:

[HttpGet]
public async Task<IActionResult> ProcessData()
{
    // Start the long-running process in a separate task
    Task.Run(() => LongRunningProcess());

    // Return a 200 status code immediately
    return Ok();
}

private void LongRunningProcess()
{
    // Perform your long-running task here
    // ...
}

In this example, the `ProcessData` method starts a long-running process in a separate task using the `Task.Run` method. Then, it immediately returns a 200 status code using the `Ok` method of the `IActionResult` interface. The long-running process will continue running in the background while the API method returns the response.

Note that this approach is suitable for fire-and-forget scenarios, where you don't need to wait for the task to complete or get any response from it. If you need to track the progress or get the result of the task, you may consider using other techniques like using a message queue, signalR, or a background service.