iasyncresult

I have that question, does AsyncWaitHandle.WaitOne block the CLR thread? or does it create an I/O completion port? For example, when I run my application I launch a task 'A' that initializes some data, when new requests arrives, I want them to wait till 'A' has finished, so I can do a IAsyncResult.AsyncWaitHandle.WaitOne , but... does it block the calling thread till 'A' ends or does it create a I/O completion port that will be also notified when 'A' finish. If not, is there a way to do that? Regards. Yes, it blocks the thread, but like any other WaitHandle , it blocks in the OS kernel so it

(can only use .NET 3.5 stock, so no Tasks, no Reactive Extensions) I have, what I thought to be a simple case, but I'm baffled at it. The short of it is that, I'm returning BeginGetRequestStream's IAsyncResult to the caller of BeginMyOperation(), and I want to really send back the IAsyncResult of BeginGetResponse, which is called when the EndGetRequestStream is called. So I'm wondering, how do I public IAsyncResult BeginMyOperation(...) { HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(requestUri); webRequest.Method = "POST"; // This is the part, that puzzles me. I don't want to

I am generally wary of implementing interfaces partially. However, IAsyncResult is a bit of a special case, given that it supports several quite different usage patterns. How often do you use/see used the AsyncState / AsyncCallback pattern, as opposed to just calling EndInvoke , using AsyncWaitHandle , or polling IsCompleted (yuck)? Related question: Detecting that a ThreadPool WorkItem has completed/waiting for completion . Consider this class (very approximate, locking needed): public class Concurrent<T> { private ManualResetEvent _resetEvent; private T _result; public Concurrent(Func<T> f)

I'm looking into adding some flexibility to a class that I've created which establishes a connection to a remote host and then performs an exchange of information (a handshake). The current implementation provides a Connect function which establishes the connection and then blocks waiting on a ManualResetEvent untill the two parties have completed the handshake. Here's an example of what calling my class looks like: // create a new client instance ClientClass cc = new ClientClass("address of host"); bool success = cc.Connect(); // will block here until the // handshake is complete if(success)

How do I pass more than just the IAsyncResult into AsyncCallback? Example code: //Usage var req = (HttpWebRequest)iAreq; req.BeginGetResponse(new AsyncCallback(iEndGetResponse), req); //Method private void iEndGetResponse(IAsyncResult iA, bool iWantInToo) { /*...*/ } I would like to pass in example variable bool iWantInToo . I don't know how to add that to new AsyncCallback(iEndGetResponse) . You have to use the object state to pass it in. Right now, you're passing in the req parameter - but you can, instead, pass in an object containing both it and the boolean value. For example (using .NET 4