Near the bottom of the page, there's this line of code:
First, (TextBox.Text) should be (TextBox2.Text). Second, this line will give a compile error:
In order for this to work, the numbers have to be converted back to a string.

Also in Chapter 9, when I press F5 or Ctrl + F5 to run the Begin\Chapter09\ web site, I get a compile error:
There are a lot of errors in this book. It really should be proofed and the code tested more thoroughly.

Rob

The first is a simple typo and should be, as you say, TextBox2.Text.

The second is more interesting and shows a) a major difference between VB and C#, and b) I didn't check the code (more on that later). The line should be:

Label1.Text = (Convert.ToInt32(TextBox1.Text) + Convert.ToInt32(TextBox2.Text)).ToString();

This adds the two numbers together and then converts them back into a string to display.

The error here is completely mine and is interesting. In VB you don't need to convert the two numbers back to a string - it is implicitly done for you. When I converted this chapter from VB I completely forgot this and didn't try the code becuase it wasn't going to be part of the code that finally shipped. An oversight and I should have been more careful; I can only apologise.

Dave