This print for content only-size & color not accurate 7" X 9-1/4" / casebound / malloy

name="WSHttpBinding_IBasicMath"

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8849CH26.qxd  10/10/07  11:46 AM  Page 943

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Figure 26-22.

Selecting the Add() operation 

Copy this value to your clipboard and paste it into the ChannelToken property using the IDE’s

Properties window. Once you have done so, you will notice that the ChannelToken property has two

subnodes named EndpointName and OwnerActivityName. Because the MathService exposes only a

single endpoint, copy the same value set to ChannelToken (WSHttpBinding_IBasicMath) to the

EndpointName, and select the name of your workflow instance (WCFSendAddActivity) as the owner.

Last but not least, we need to connect the x and y parameters of the Add() method to our

FirstNumber and SecondNumber properties, and the return value to our Result property. The process

of doing so is identical to configuring the InvokeWebService activity (click the ellipsis buttons to pick

the property name). Figure 26-23 shows the fully configured SendActivity.

To view the result, place a final Code activity on your workflow designer and assign the

ExecuteCode value to a method named WCFResult(), which is implemented like so:

private void WCFResult(object sender, EventArgs e)

{

Console.WriteLine("***** WCF Service Addition *****");

Console.WriteLine("{0} + {1} = {2}",

FirstNumber, SecondNumber, Result);

}

Figure 26-24 shows the final output.

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