Checking if HttpStatusCode represents success or failure

Question

Let's suppose I have the following variable:

System.Net.HttpStatusCode status = System.Net.HttpStatusCode.OK;

How can I check if this is a success status code or a failure one?

For instance, I can do the following:

int code = (int)status;
if(code >= 200 && code < 300) {
    //Success
}

I can also have some kind of white list:

HttpStatusCode[] successStatus = new HttpStatusCode[] {
     HttpStatusCode.OK,
     HttpStatusCode.Created,
     HttpStatusCode.Accepted,
     HttpStatusCode.NonAuthoritativeInformation,
     HttpStatusCode.NoContent,
     HttpStatusCode.ResetContent,
     HttpStatusCode.PartialContent
};
if(successStatus.Contains(status)) //LINQ
{
    //Success
}

None of these alternatives convinces me, and I was hoping for a .NET class or method that can do this work for me, such as:

bool isSuccess = HttpUtilities.IsSuccess(status);

Answer 1

If you're using the HttpClient class, then you'll get a HttpResponseMessage back.

This class has a useful property called IsSuccessStatusCode that will do the check for you.

using (var client = new HttpClient())
{
    var response = await client.PostAsync(uri, content);
    if (response.IsSuccessStatusCode)
    {
        //...
    }
}

In case you're curious, this property is implemented as:

public bool IsSuccessStatusCode
{
    get { return ((int)statusCode >= 200) && ((int)statusCode <= 299); }
}

So you can just reuse this algorithm if you're not using HttpClient directly.

You can also use EnsureSuccessStatusCode to throw an exception in case the response was not successful.