Question

I’m currently trying to modify some HttpWebRequest functions, but I can’t do it through inheritance because HttpWebRequest has no public constructors (besides the deserialization constructor). Is there a workaround to do this?

My objective is to code something like the example below, but this class objects must inherit the HttpWebRequest properties and methods:

using System; using System.Net; using System.Threading;  public class AsyncWebRequest:WebRequest {     private readonly AsyncCallback getResponseCallback;     private readonly Uri uri;     private volatile int RetriesLeft = 3;     private volatile WebRequest request;      public AsyncWebRequest(string uri, AsyncCallback getResponseCallback)        :this(new Uri(uri), getResponseCallback)     {     }      public AsyncWebRequest(Uri uri, AsyncCallback getResponseCallback):base()     {         this.uri = uri;         this.getResponseCallback = getResponseCallback;     }      private IAsyncResult BeginGetResponse()     {         request = HttpWebRequest.CreateDefault(uri);         ((HttpWebRequest)request).ReadWriteTimeout = Timeout;         var result = request.BeginGetResponse(GetResponseCallback, null);         ThreadPool.RegisterWaitForSingleObject(result.AsyncWaitHandle,             GetResponseTimeout, null, Timeout, true);         return result;     }      private void GetResponseTimeout(object state, bool timedOut)     {         if (timedOut)         {             Retry();         }     }      private void Retry()     {         request.Abort();         bool retry = false;         lock (request)         {             if (RetriesLeft > 0)             {                 Interlocked.Decrement(ref RetriesLeft);                 retry = true;             }         }         if (retry)         {             BeginGetResponse();         }         else         {             getResponseCallback(null);         }     }      private void GetResponseCallback(IAsyncResult AsyncResult)     {         try         {             getResponseCallback(AsyncResult);         }         catch(WebException webException)         {             Retry();         }     } } 

Answer 1

Unless you can trick the serialization constructor to do your bidding, then no, there is no way.

The constructors of that class are internal, so you have no way of calling them.