asynchronous-wcf-call

Error when calling the service in async mode

Stackoverflow is definetly the fastest forum so after posting this question in the WCF forum I decided to come here. I have a wcf service which returns a dictionary (IDictionary) and that works just fine. Now I wanted to add the capability of calling that service in async mode, but when the BeginMethod gets executed I get the following ...

Dropping outdated WCF responses in Silverlight

In Silverlight I got the following problem. If you fire multiple requests to the web service, the responses might not return in an ordered sequence. Meaning if the first request takes longer than the following ones, its response will return at last: 1. Sending request A.. (takes longer for some reason) 2. Sending request B.. 3. Sending ...

How to set Asynchronous time out in client application there called the Web Service of C#

I made the HTTP service & host on IIS. Then add that service in a client applciation as a web reference. Called the publised function in client application asynchronously. THe calling function have following code: { Thread.Sleep(30000); return "Hi" } Web config have following setting: Used the ...

Abort Asynchronous Web Service Call and redirect to another URL (ASP.NET Ajax)

In my webapp, I have a list of links generated from code-behind and bound to a repeater control. Clicking on a link opens a popup window, where, along with displaying some data, an asynchronous call to a WCF Service is made (through a javascript proxy). This service in turn calls another third party web service that might take a long tim...

Async call for WCF service hosted in windows service

I have hosted a WCF service in windows service. I have console app for which I added a WCF service reference and generated Client for it. I can make Sync call to the service,but Async call doesn't seem to work. If i attach server process it doesn't hit the service at all. client= new ServiceClient(); client.DoSomething();//Works fine ...

Async End<Method> not called in WCF

I have the following situation: My WCF service allows a client to register to wait for some event. The waiting is asynchronous on the service side, that is, the waiter is registered and when the process is finished, the waiter is notified. At the moment, it's simply a ManualResetEvent. Now I want to expose this method via WCF. I tried t...

Asynchronous Web Service Design Patterns

When writing a Silverlight app hooked up to a WCF Web Service, the only option we are presented with in using the Web Service is to make asynchronous calls to the WS interface. i.e. WebService client = new WebService(); client.ServiceMethodCompleted += new EventHandler<Args>(client_Handler); client.ServiceMethodAsync(); client.close()...

Async Web Service call from Silverlight 3

I have a question regarding the sequencing of events in the scenario where you are calling a wcf service from silverlight 3 and updating the ui on a seperate thread. Basically, I would like to know whether what I am doing is correct... Sample is as follows. This is my first post on here, so bear with me, because i am not sure how to po...

Asynchronous web service call returning null (called from ASP.NET asynchronous page)

I am consuming a 3rd-party web service which has been implemented in WCF. My consumer code resides on an ASP.NET asynchronous page. Problem is, sometimes the BeginCallWebService() method is returning null. Shouldn't it always return an IAsyncResult object? Should I ask the web service developer to modify their code, or is null a legit...

What is the difference between marking a wcf method with [OperationContract(IsOneWay = true)] attribute and checking the generate asynchronous operations checkbox when adding a service reference?

What is the difference between marking a wcf method with [OperationContract(IsOneWay = true)] attribute and checking the generate asynchronous operations checkbox when adding a service reference? From what I have read, it seems the asynchronic nature of the call should only be defined on the client side. If that's the case, what is ...

Do WCF 3.5 REST endpoints call associated methods asynchronously?

Hi, When a WCF 3.5 REST endpoint (via WebServiceHost) handles a URI request, does it invoke the associated procedure asynchronously? Thanks, Scott ...

Exception during multiple asynchronous calls to WCF (The message could not be processed...)

I am getting a "The message could not be processed..." error from a WCF client. Please help, it's killing me. I have a test win app that goes through a for loop to kick of x number of asynchronous calls. Each asynchronous call instantiates its own instance of a WCF proxy and calls a WCF service using that proxy. If x is about 35 or l...

Web service mass update

Is there a compelling reason to offer "batch update" version of update methods in a .NET web service? Is there a considerable advantage over making multiple calls, asynchronous or synchronous, over HTTP? My first impulse is to offer asynchronous calls and include a record ID in the input composite, and to push-back on the requirement...