Chapter review

The complete version of the Default.aspx.cs file for this chapter, including comments, is shown in the following code block:

//using is a directive
//System is a name space
//name space is a collection of features that our needs to run
using System;
using System.Drawing;
//public means accessible anywhere
//partial means this class is split over multiple files
//class is a keyword and think of it as the outermost level of grouping
//:System.Web.UI.Page means our page inherits the features of a Page
public partial class _Default : System.Web.UI.Page
{
    protected void Button1_Click(object sender, EventArgs e)
    {
        Bitmap image = new Bitmap(@"c:\data\lessonimage.bmp");
        //to get each pixel's location
        int x, y;
        //controls moving horizontally
        for(x=0;x<image.Width;x++)
        {
            //controls moving vertically
      ...