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Questions tagged [iasyncresult]

Questions аbout IAsyncResult .net interface that represents the status of an asynchronous operation.

Questions аbout IAsyncResult .net interface that represents the status of an asynchronous operation.

The IAsyncResult interface is implemented by classes containing methods that can operate asynchronously. It is the return type of methods that initiate an asynchronous operation, such as FileStream.BeginRead, and it is passed to methods that conclude an asynchronous operation, such as FileStream.EndRead. IAsyncResult objects are also passed to methods invoked by AsyncCallback delegates when an asynchronous operation completes.

An object that supports the IAsyncResult interface stores state information for an asynchronous operation and provides a synchronization object to allow threads to be signaled when the operation completes.

http://msdn.microsoft.com/en-us/library/system.iasyncresult.aspx

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Iasyncresult - why it is not just object, why it is interface?

I just cannot figure out what why IAsyncResult is an interface instead of simple object. As I remember correctly, interface contains only method names without implementation so I canot see how it is used here as I do not derive any class of it nor…
Thomas
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Sending DataGrid (DataGridRowDetailsEventArgs e) AsyncResult

Good day. Have a DataGrid (operationGrid) RowDetailsTemplate, which contains the DataGrid (sumOperationGrid)
karapuz
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problem withAsync SqlComman

I have problem with Timeout, when I run a command through app, a timeout exception is thrown, but when I run it directly in sql there is no timeout exception! my SP take about 11 min when I run it directly. for solving this issue, I found below code…
Alibm
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Async procedures issue

I'm trying to make my SQL commands running asynchronously with PowerShell. To achive this i'm using SqlCommand class and BeginExecuteNonQuery method. As far as i know, this method should return IAsyncResult class. But when I'm trying to inspect…
KennyMacCormik
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Service Bus IAsyncResult

I'm curently trying to make my App able to receive Asyncronously message from my Service Bus. But, Sometimes an Exception is Throw and i don't know how to make it disapear or from what it can come from. Here's the exception: Exception:…
Shuiei
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Help threading HttpWebRquest in c#

Hi guys just wondering if somebody could help me try and correctly thread my application, I am constantly hitting an hurdle after another, I have never been to clued up on threading in applications. I have tryed following this…
Matthew Deloughry
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Get Result of Private Property TcpClient.BeginConnect, IAsyncResult in VB.NET

I have an application in VB.NET When I run the application in Visual Studio 2010 and mouseover an IAsyncResult, I see the protected property Result. I would like to read the value of the property in the application. How can I do that? Imports…
Jacob Quisenberry
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Implementing HttpWebRequest Async Methods

For various reasons, I have been geared towards changing existing synchronous IO bound code such as sending outbound HTTP requests using the HttpWebRequest class very frequently in a service we use. I am aware of async/await as well as the changes…
TheJediCowboy
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Asynccallback in dll causes Form to freeze

I have a form Form1 with a button and text box. When I click on the button I should get some data from USB device. For some reason it works correctly only about 2% (I was able to get 2 correct responses out of 100 clicks). Here is the code for the…
mike5ocns
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Async callback thread lock in Silverlight WCF

I came up with an idea on how to fake SL WCF support for synchronous calls. Basically, private _completed; private IList _customers; public void IList GetAllCustomers() { bool completed = false; …
h.alex
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Async HttpWebRequest - thread number

Let's say I have the following code : ThreadPool.SetMinThreads(100, 100); for (int i = 0; i < 100; i++) { var request = WebRequest.Create(url); request.BeginGetResponse(ar => { //inside AsynchCallBack method for request.BeginGetResponse() …
sirrocco
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AsyncResult class with a constructor in C#

I am looking to instantiating an AsyncResult object but there seems to be no AsyncResult class with a constructor in .Net Frameowork that I can instantiate. Can someone provide a ready implementation of IAsynResult interface in C#? Or is there some…
Sunil
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Asynhronious socket: block this thread before all data are sent

Regarding asynchronious sockets, I would like to know if its possible to hold the thread, before all the data are sent? With use of Socket.BeginSend public IAsyncResult BeginSend( byte[] buffer, int offset, int size, SocketFlags…
Mitja Bonca
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Why my asyncResult is always null?

I have the following program that uses async operation but the returning IAsyncResult.AsyncState is always null. What I'm doing wrong? public interface ICommandService { [OperationContract(AsyncPattern = true)] IAsyncResult BeginLogin(string…
Dor Cohen
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Determining Error via IAsyncResult that has WebRequest WebResponse in C#

I'm working on a Windows Phone app. Usually I would use a WebClient however, in this specific case I've been told that I need to use a HttpWebRequest. I can successfully fire off the request. However, occassionally it fails. Either because of a…
JavaScript Developer
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