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

// Add numbers in an async manner, using a lambda expression.

IAsyncResult result = proxy.BeginAdd(2, 3,

ar =>

C H A P T E R   2 5  

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I N T R O D U C I N G  W I N D O W S   C O M M U N I C AT I O N   F O U N D AT I O N

909

8849CH25.qxd  10/16/07  10:51 AM  Page 909

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{

Console.WriteLine("2 + 5 = {0}", proxy.EndAdd(ar));

}, null);

while (!result.IsCompleted)

{

Thread.Sleep(200);

Console.WriteLine("Client working...");

}

}

Console.ReadLine();

}

}

}

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Source Code

The MathClient project is located under the Chapter 25 subdirectory.

Designing WCF Data Contracts

This chapter’s final example involves the construction of WCF data contracts. The previous WCF

services defined very simple methods that operate on primitive CLR data types. When you are mak-

ing use of any of the web service–centric binding types (basicHttpBinding, wsHttpBinding, etc.),

incoming and outgoing data types are automatically formatted into XML elements using the

System.Runtime.Serialization.XmlFormatter type defined within the System.Runtime.

Serialization.dll assembly. On a related note, if you make use of a TCP-based binding (such as

netTcpBinding), the parameters and return values of simple data types are transmitted using a

compact binary format.