IClientService returns zero objects, even when fiddler2 tells me the respons contains the expected objects

annathor

I have a weird problem on my hands, we are using IClientService / ChanneFactory to communicate with the WCF service, the method looks like this

public List<IOrder> GetOrders(string userId, string password)
{
List<IOrder> orders = null;
try
{
IClientService wcfClient1 = _clientService.CreateChannel();
orders = wcfClient1.GetOrders(userId, password);
((IClientChannel)wcfClient1).Close();
ServerConnection = true;
}
catch (Exception ex)
{
ServerConnection = false;
SendError("GetOrders() " + ex);
}
return orders;
}

and Fiddler2 Web debugger tells me that the request looks like this:

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Body>
<GetOrders xmlns="http://tempuri.org/">
<userId>DemoUser</userId>
<password>DemoPass</password>
</GetOrders>
</s:Body>
</s:Envelope>

and the response like this:

				Di,Fe,Fr,Hi,Hy,Næ,Næ3,NæS,Op,Pr,RE,Sl,TG,VP
				20
				Restavfall
				20
				2011-07-20T00:00:00
				101610
				0
				10
				10 - Orkanger Test

so the response clearly contains the expected object, the problem is that, in the client side method GetOrders, after the line "orders = wcfClient1.GetOrders(userId, password)", the list "orders" becomes a list of 0 objects and not, as expected, a list with the one object returned by the service. anyone that have any idea of whats going on?

Mark Salsbery

Just curious....since you already have a proxy class, what does using that class return? e.g. _clientService.GetOrders(userId, password);

Mark Salsbery Microsoft MVP - Visual C++ :java:

annathor

_clientService is defined as

private ChannelFactory<IClientService> _clientService;

so it doesn't have a accessable GetOrders method. the _clientService is constructed like this:

BasicHttpBinding clientBinding = new BasicHttpBinding {MaxReceivedMessageSize = int.MaxValue};
EndpointAddress clientEndpoint = new EndpointAddress(serviceUrl);
_clientService = new ChannelFactory<IClientService>(clientBinding, clientEndpoint);

Mark Salsbery

Does the endpoint configuration match on both ends?

Mark Salsbery Microsoft MVP - Visual C++ :java:

Mycroft Holmes

Ahm - aren't WCF calls asynchronous therefore this would not return a value.

wcfClient1.GetOrders(userId, password)

You need to set up a callback. This is a typical call

	public void GetRecord(int iID)//---------------------------------------Get record
	{
		svcClient.PERIODGetRecordCompleted += new System.EventHandler(GetRecordCompleted);
		svcClient.PERIODGetRecordAsync(iID);
	}

private void GetRecordCompleted(object sender, PERIODGetRecordCompletedEventArgs e)//the call back that receives the data

Never underestimate the power of human stupidity RAH

annathor

the WCF calls must be asynchronous in silverlight, not so in WPF where they can be both synch or asynch, anyhow have resolved the issue, it was a case of service missing the assembly with the interface definitions.

Mycroft Holmes

annathor wrote:

not so in WPF

Ahhh I'm only using Silverlight and therefore the skewed view on things. I thought it was too dammed obvious, I'm just glad I didn't go all sarcastic on you :) .

Never underestimate the power of human stupidity RAH