I am trying to setup ReadFile to run asynchronously and according to MSDN, I need to set lpNumberOfBytesRead to null ("Use NULL for this parameter if this is an asynchronous operation to avoid potentially erroneous results.") For example, if I have the following: [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]...
In my application, I have three collection objects which store data. The data which populates these collections is downloaded from an XML file on the web. The three data classes are very simple, the following is a typical example: [SerializableAttribute()] [XmlTypeAttribute(AnonymousType = true)] [XmlRootAttribute(Namespace = "", IsNul...
Hi, Good morning. We are building an ASP.NET website and in that we have one big page having 4 GridViews. Each grids have sorting feature enabled. We need to make an asynchronous call to the server for each grid (whenever a user clicks on a column of a grid view to sort) so that it renders fast (instead of full page getting refreshed...
There is no F# async wrapper (in the PowerPack) for TcpListener.BeginAcceptTcpClient()/EndAcceptTcpClient(). How do I write my own wrapper around this so that I can use the let! and async keywords and run it in parallel? ...
I'm developing a thread safe class and I want to wrap async method call around a sync method call. Maybe I'm not looking for a definition of "asynccall" method, but something close to it. When calling AsyncToStartSearchPage() on the instance, I want the calling thread to block until the new thread obtains the lock on the object. That'...
In C# I am using the asynchronous versions of TcpListener/TcpClient, and I am chaining these via the callback method so that another Accept/Read is posted when the callback completes. Here is an example (untested): public void Start() { TcpListener listener = new TcpListener(IPAddress.Any, 3000); listener.Start()...
Can anyone give me an example scenario where Asynchronous Callback should be used in an Winforms Database application? And also an example scenario where Asynchronous Callback must be used in an Winforms database application? ...
I am trying to add facility of asynchronous transmission in my project. I want following in my application. A table view should load data through web service ( I can do ) Each cell must have an image ( I can do ) But the problem is up to now I was using synchronous transmission. i.e all data is loaded & then displayed including imag...
I am trying to work on application in which images should be loaded asynchronously. Are there any examples related this? I tried pokeb-asi to understand asynchronous transmission, and it works within that application fine. But I want to know how to do it from scratch I am facing following problems. I don't know the exact way to do ...
Hi, I have a class called CommunicationManager which is responsible for communication with server. It includes methods login() and onLoginResponse(). In case of user login the method login() has to be called and when the server responds the method onLoginResponse() is executed. What I want to do is to bind actions with user interface....
Hi, What is difference between Asynchronous vs synchronous messaging (java) and how does it impact way in which messaging sender / receiver is implemented. how does a J2EE architecture decides to choose either. ...
I'm just starting out with Java serialization, and I'm not clear on how you are supposed to get objects from a source in a scenario with non-blocking I/O . All the documentation I can find suggests using ObjectInputStream is the proper way to read in serialized objects. However, as I mentioned I'm using java.nio and performing non-block...
Edit: Moved the actual question to the top. Update: Found an example by Microsoft, tucked on some more code at the end. My questions are these: Is it safe to call multiple BeginInvoke calls on the same delegate instance, or do I have to construct a new delegate instance for each in-flight method call? If I have to construct new insta...
Hi guys is there a best way to manage a form in WPF application which has asynchronous execution commands? 1) Suppose you have a form where user enters all his data and clicks on Ok button to save changes. 2) Your WPF app starts an asynchronous method to record those data. 3) Now suppose the database server is do...
I'm currently using Workling with Starling on a rails app. Although I like Workling, I find it kinda hard to monitor. To make matters worse, I have a couple of Workling instances. Workling is running with the :multiple set to 'true' (inside workling_client). I can see the pid for each instance and such, but I want to know if they're ac...
How can I centralize management of a "loading" icon for GWT async RPC calls? I'm looking for a way to have every async call automatically kick off a timer. When the timer fires, if the RPC has not yet completed, a "loading" icon should be displayed. When the RPC completes (either onSuccess() or onFailure()) the loading icon should be ...
Here's scenario: Client makes remote call to the service (returns void) and provides a callback object Service executes some long running logic on the background thread and then uses callback object to trigger ether success or failure which (since these manipulate visual elements) execute in Activity#runOnUiThread block The scenario ...
I have Flex call a C# dll which starts a long batch process (10 minutes). This process is actually a PERL program which periodically outputs progress messages. I want to be able to stream these messages back to a text area in Flex. Can someone point me to an example of such an arrangement? Mark. ...
I'm using a product called DHTMLXGrid, which is a JS library for creating spreadsheet-like tables on a web page. When I edit a cell, and then click outside the cell, an event is fired (they call it onCellEdit) and I do stuff to handle that event - an AJAX call to save the cell data to the DB. But if the user edits a cell and clicks a b...
I see the benefit of asynchronous commands (waiting for server responses...) but in my flex app it creates me more problem than anything. Here's what I want: EVERY command executes only after the previous one returned (to result or fault function) And I'd like to do this as easily as possible.. by the way the GUI must become irresponsi...