如何在RestSharp .NET中处理自定义http错误代码

public class CustomHttpException : Exception
{
    public CustomHttpException(string message) : base(message)
    {
    }
}

var client = new RestClient("http://example.com");
var request = new RestRequest("api/resource", Method.GET);

IRestResponse response = client.Execute(request);

if (!response.IsSuccessful)
{
    if (response.StatusCode == HttpStatusCode.BadRequest)
    {
        throw new CustomHttpException("Bad request");
    }
    else if (response.StatusCode == HttpStatusCode.NotFound)
    {
        throw new CustomHttpException("Resource not found");
    }
    // 处理其他自定义错误代码
    else
    {
        throw new Exception("Unhandled HTTP error");
    }
}

try
{
    // 发送HTTP请求的代码
}
catch (CustomHttpException ex)
{
    // 处理自定义的HTTP错误
    Console.WriteLine(ex.Message);
}
catch (Exception ex)
{
    // 处理其他异常
    Console.WriteLine(ex.Message);
}