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; //needed for lists
using System.Data.SqlClient;//needed for commands and connections
//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 class Person
{
    public string Name { get; set; }
    public decimal? Salary { get; set;}
}
public partial class _Default : System.Web.UI.Page
{
    protected void Button1_Click(object sender, EventArgs e)
    {
        //clear label text every button click
        sampLabel...