form1.cs

Professional C# 2nd Edition

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Xml;
using System.Xml.Serialization;

namespace Wrox.ProCSharp.Xml.SerialSample4
{

  /// <summary>
  ///   Summary description for Form1.
  /// </summary>
  public class Form1 : System.Windows.Forms.Form
  {
    private System.Windows.Forms.ListBox listBox1;
    private System.Windows.Forms.Button button1;
    private System.Windows.Forms.Button button2;
    /// <summary>
    ///   Required designer variable.
    /// </summary>
    private System.ComponentModel.Container components=null;

    public Form1()
    {
      //
      // Required for Windows Form Designer support
      //
      InitializeComponent();

      //
      // TODO: Add any constructor code after InitializeComponent call
      //
    }

    /// <summary>
    ///   Clean up any resources being used.
    /// </summary>
   protected override void Dispose( bool disposing )
   				{
   					if( disposing )
   					{
   						if (components != null) 
   						{
   							components.Dispose();
   						}
   					}
   					base.Dispose( disposing );
   				}
   


    #region Windows Form Designer generated code
    /// <summary>
    ///   Required method for Designer support - do not modify
    ///   the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
      this.listBox1 = new System.Windows.Forms.ListBox();
      this.button1 = new System.Windows.Forms.Button();
      this.button2 = new System.Windows.Forms.Button();
      this.listBox1.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
        | System.Windows.Forms.AnchorStyles.Right);
      this.listBox1.Size = new System.Drawing.Size(336, 238);
      this.listBox1.TabIndex = 0;
      this.button1.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
      this.button1.Location = new System.Drawing.Point(64, 264);
      this.button1.TabIndex = 1;
      this.button1.Text = "Serialize";
      this.button1.Click += new System.EventHandler(this.button1_Click);
      this.button2.Location = new System.Drawing.Point(152, 264);
      this.button2.TabIndex = 2;
      this.button2.Text = "Deserialize";
      this.button2.Click += new System.EventHandler(this.button2_Click);
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(339, 320);
      this.Controls.AddRange(new System.Windows.Forms.Control[] {this.button2,
                                                                  this.button1,
                                                                  this.listBox1});
      this.Text = "Form1";

    }
    #endregion

    /// <summary>
    ///   The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main() 
    {
      Application.Run(new Form1());
    }

    //SerialSample4\form1.cs
    private void button1_Click(object sender, System.EventArgs e)
    {
      //create the XmlAttributes boject
      XmlAttributes attrs=new XmlAttributes();
      //add the types of the objects that will be serialized
      attrs.XmlElements.Add(new XmlElementAttribute("Book",typeof(BookProduct)));
      attrs.XmlElements.Add(new XmlElementAttribute("Product",typeof(Product)));
      XmlAttributeOverrides attrOver=new XmlAttributeOverrides();
      //add to the attributes collection
      attrOver.Add(typeof(Inventory),"InventoryItems",attrs);
      //create the Product and Book objects
      Product newProd=new Product();
      BookProduct newBook=new BookProduct();
      
      newProd.ProductID=100;
      newProd.ProductName="Product Thing";
      newProd.SupplierID=10;
      
      newBook.ProductID=101;
      newBook.ProductName="How to Use Your New Product Thing";
      newBook.SupplierID=10;
      newBook.ISBN="123456789";
      
      Product[] addProd={newProd,newBook};

      Inventory inv=new Inventory();
      inv.InventoryItems=addProd;
      TextWriter tr=new StreamWriter("..\\..\\..\\inventory.xml");
      XmlSerializer sr=new XmlSerializer(typeof(Inventory),attrOver);
      
      sr.Serialize(tr,inv);
      tr.Close();
		MessageBox.Show("Serialized!");
      
    }

    private void button2_Click(object sender, System.EventArgs e)
    {
      //we need to do the same procss to deserialize
      //create the new XmlAttributes collection
      XmlAttributes attrs=new XmlAttributes();
      //add the type information to the elements collection
      attrs.XmlElements.Add(new XmlElementAttribute("Book",typeof(BookProduct)));
      attrs.XmlElements.Add(new XmlElementAttribute("Product",typeof(Product)));
      XmlAttributeOverrides attrOver=new XmlAttributeOverrides();
      //add to the Attributes collection
      attrOver.Add(typeof(Inventory),"InventoryItems",attrs);
      //need a new Inventory object to deserialize to    
      Inventory newInv;
      //deserialize and load data into the listbox from deserialized object
      FileStream f=new FileStream("..\\..\\..\\inventory.xml",FileMode.Open);
      
      XmlSerializer newSr=new XmlSerializer(typeof(Inventory),attrOver);
      newInv=(Inventory)newSr.Deserialize(f);
      if(newInv!=null)  {
        foreach(Product prod in newInv.InventoryItems)
          listBox1.Items.Add(prod.ProductName);
      }
        
      f.Close();
    }
    
    //these classes are the same as previous example
    // with the exception that the attributes are removed
    //from the Inventory InventoryItems property
    public class Inventory
    {
      private Product[] stuff;
      
      public Inventory() {}
          
      public Product[] InventoryItems {
        get {return stuff;}
        set {stuff=value;}
      }
    
    }
    
    
    public class Product {
    
      private int prodId;
      private string prodName;
      private  int suppId;
     
      public Product() {}
       
    
      public int  ProductID {
        get {return prodId;}
        set {prodId=value;}
      }
      
    
      public string ProductName {
        get {return prodName;}
        set {prodName=value;}
      }
      
    
      public int SupplierID  {
        get {return suppId;}
        set {suppId=value;}
      }
     
      
    }
   
    public class BookProduct:Product
    {
      private string isbnNum;
      
      public BookProduct() {}
      
      public string ISBN  {
        get {return isbnNum;}
        set {isbnNum=value;}
      }
    
    }
    
    
    
  }
}