Stack Overflow
Stack Overflow

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

112 questions
0
votes
1 answer

DotNetOpenAuth and Async WebRequest (BeginGetResponse)

DotNetOpenAuth Samples don't include an example for performing a call asynchronously. Here's my implementation. I'd like to know if I'm doing something wrong. public static IAsyncResult BeginGetFromGoogle(string accessToken) { var oauthConsumer…
Chris Moschini
  • 36,764
  • 19
  • 160
  • 190
0
votes
1 answer

End method of asyn WCF service is never called

I am trying to implement the asynchronous pattern in my WCF service. The BeginMethod is called, but the corresponding EndMethod is never called. Debugging the server, putting breakpoints in various places I noticed that callback that is passed to…
Jesse
  • 915
  • 1
  • 11
  • 20
0
votes
1 answer

Updating a DataRepeater inside updatepanel with IAsyncResult not working!

I am having trouble binding data to data repeater when I use ISyncResult. This is what I am doing. There is a button inside a Update Panel that gets the input from the user and calls a function that returns a dataset that I then bind to data…
Besnik
  • 146
  • 1
  • 1
  • 6
0
votes
0 answers

The IAsyncResult object was not returned from the corresponding asynchronous method on this class

I have software that connects over TCP/IP to 4 differents devices (Weigher and 3 barcode scanners). About once or twice a day, I get an error that make the software crash: System.ArgumentException: The IAsyncResult object was not returned from…
Dominic
  • 159
  • 1
  • 3
  • 13
0
votes
2 answers

2nd BeginInvoke call claims already completed. Why?

I'm repeatedly calling a method with BeginInvoke. After each call, I call EndInvoke. The problem is that for the second call, the IsCompleted member in the returned IAsyncResult is set to true IMMEDIATELY after the BeginInvoke call. This causes a…
alankdkd
  • 1
  • 1
0
votes
1 answer

cannot Resolve Symbol 'AsyncResult'

here is my code for downloading information from a google sheet to my app. my android studio cant seem to find this class. what can i do about this problem? i'm lost. thanks. i took this code from this…
Yarden Rotem
  • 85
  • 12
0
votes
1 answer

vb.net implementing IAsyncResult.AsyncState

I can easily do this in C#...but I need the equivalent in VB.Net. I need to be able to implement various IAsyncResult properties in VB.Net. IN C# Works like a champ... public object AsyncState { get; set; } IN VB.NET - THIS FAILS This fails…
Prisoner ZERO
  • 13,848
  • 21
  • 92
  • 137
0
votes
1 answer

.net Remoting: Detect if a server isn't running

I'm working on an app that uses .net remoting for IPC. When my client app starts up, it uses the following code to connect to the server: chnl = gcnew HttpChannel(); ChannelServices::RegisterChannel(chnl, false); IPCObjectInstance =…
greggorob64
  • 2,487
  • 2
  • 27
  • 55
0
votes
3 answers

Help me solve this Threading issue with GPS

I have a GPS class which i obviously use to acquire the latitudes and longitudes. The UpdateData() is called when the gps state or location is changed. So i make sure that both the Latitude and Longitude is valid and then i make the DataReady bool…
Ranhiru Jude Cooray
  • 19,542
  • 20
  • 83
  • 128
0
votes
1 answer

Read from text file while asynchronous process is working

I have a method that runs for a very long time and writes to log files. It's set up like this public class PSOHelper { public PSOHelper(string[] params) { //set up params here } public async…
Matt Kagan
  • 611
  • 1
  • 12
  • 24
0
votes
2 answers

How to use IAsyncResult

i have a method with the following signature that belongs to a class. public virtual IAsyncResult DoSomething(CustomOptions options); I am trying to figure out how exactly do i call the callback.I cannot find anywhere the event on which to give a…
TotalWar
  • 335
  • 1
  • 6
  • 16
0
votes
2 answers

During BeginInvoke calls, what does the @object parameter refer to?

In a sample use of the BeginInvoke thread pool method: ... Func method = someWorkMethod; IAsyncResult cookie = method.BeginInvoke("test", ... One of the expected parameters (the last one), in BeginInvoke is: object @object What does…
Scott Davies
  • 3,665
  • 6
  • 31
  • 39
0
votes
2 answers

Two questions on ensuring EndInvoke() gets called on a list of IAsyncResult objects

So this question is regarding the .Net IAsyncResult design pattern and the necessity of calling EndInvoke as covered in this question Background I have some code where I'm firing off potentially many asynchronous calls to a particular function and…
RobV
  • 28,022
  • 11
  • 77
  • 119
0
votes
1 answer

Wrapping an APM operation in another APM operation

I'm implementing a library with some APM methods that do asynchronous I/O. (To get it out of the way, I cannot use Tasks, async/await, Rx, third-party libraries, etc.) Say one of my APM library methods, BeginOuter(), is just deferring to another APM…
user1454265
  • 868
  • 11
  • 25
0
votes
1 answer

Stored Procedure not done, but IAsyncResult.IsCompleted is "true"

I have what I thought would be a simple program for end-users to run a stored procedure, which can take quite some time to run. I thought I'd able to use an asynchronous connection, call Begin/EndExecuteNonQuery, and have a timer going to let the…
Kodithic
  • 160
  • 12
1 2 3 4 5
6
7 8