Setting up the starting interface

Let's begin with Default.aspx and drag a Button control into the page. Change the Text parameter on the button to say Show Summary. Then, under the Button tag , place a Label control. Your screen should now look like the following screenshot:

Figure 5.8.1: The initial interface for this chapter

We've done this before, right? There's nothing new. The basic markup is shown in the following screenshot:

Figure 5.8.2: The basic markup for this chapter

Creating the GetValueAndInterest method

Let's go over to the Design view and then double-click on the Button control. This, of course, brings up the Event Handler. First, we'll create a method above it called GetValueAndInterest. For this, enter the following:

private static void GetValueAndInterest(out decimal interest, ref decimal value)

You've seen private, static, and void before. Here, GetValueAndInterest is the name of our method. This is followed by out decimal, then interest, and then ref decimal value. Follow...