Chapter review

For 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.Collections.Generic;
using System.Linq;
//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)
    {
        IEnumerable<int> scores = 
        new int[] { 45, 98, 99, 78, 89, 87, 77, 67, 71, 81 }; 
        //array of integers
        //line 17 below selects all scores 90 or above, and averages them,
        //giving back...