Applied XML Programming for Microsoft .NET.pdf - Csbdu.in

through the SoapFormatter class) saves data to a text stream, automatically encodinginformation in a SOAP message before writing.The SOAP FormatterTo use the SOAP formatter, you must reference a distinct assembly—System.Runtime.Serialization.Formatters.Soap. You add this separate assemblythrough the Add Reference dialog box or manually on the compiler's command linethrough the /reference switch. In addition to linking the assembly to the project, you stillhave to import the namespace with the same name as the assembly, as shown here:using System.Runtime.Serialization.Formatters.Soap;At this point, you prepare the output stream, instantiate the SOAP formatter, and callthe Serialize method, as follows:// emp is the object instance to processStreamWriter writer = new StreamWriter(filename);SoapFormatter soap = new SoapFormatter();soap.Serialize(writer.BaseStream, emp);writer.Close();Note that the Serialize method accepts only a stream object, which makes serializing toin-memory strings a little more difficult.Let's consider a rather simple class, such as the following Employee class:[Serializable]public class Employee{public int ID;public string FirstName;public string LastName;public string Position;public int[] Territories;}Upon instantiation, only the numeric ID field has a determined value (0). All the othermembers are null, as shown here:Employee emp = new Employee();After the Employee class has been instantiated, the SOAP formatter generates thefollowing script:389