Object Oriented Programming using C#

Object Oriented Programming using C#

Case Study

The ApplicationWindow_Load() method reconstructs any previously stored ClientBook and MessageSet objects.

The action listener for the SaveAndExit button is shown below....

private void btnSaveAndExit_Click(object sender, EventArgs e)

{

FileStream outFile = new FileStream(“ClientAndMessageData”,

FileMode.Create, FileAccess.Write);

BinaryFormatter bFormatter = new BinaryFormatter();

bFormatter.Serialize(outFile, clientBook);

bFormatter.Serialize(outFile, messageSet);

outFile.Close();

outFile.Dispose();

this.Close();

}

Note how with just four lines of code above we can create an appropriate output stream and save all client book and message

set data – this includes details of all clients and all messages. While we had to mark the relevant classes, ClientBook, Client,

MessageSet and Message, as serializable we did not have to write any code to save this data to file.

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