you can do it by using asynchronous documnet is https://learn.microsoft.com/en-us/dotnet/csharp/asynchronous-programming/async-scenarios

public async Task<string> Post(HttpRequestMessage request)
{
string result = "10.0.2.2:8080/myFolder/index.html";

    _ = Task.Run(async () =>
    {
        try
        {
            await Task.Delay(60000);
            Directory.Delete(myFolder, true);
        }
        catch (Exception ex)
        {
            // Handle exceptions (e.g., logging)
        }
    });

    return result;
}