Where we define each character in a string as being a byte (8 bits) long, it should be 2 bytes (16 bits long).

Assigning "27" to a string takes up 4 bytes of memory because in .NET each character is 2 bytes long.

Under the Storing State section, in the second paragraph, last sentence, swap "to" and "do" around so the text says
"We'll see how to do this in a moment."

According to the Microsoft documentation, "On any Windows Form you can designate a Button control to be the accept button, also known as the default button. Whenever the user presses the ENTER key, the default button is clicked regardless of which other control on the form has the focus. (The exceptions to this are when the control with focus is another button ??? in that case, the button with the focus will be clicked ??? or a multiline text box, or a custom control that traps the ENTER key.)" However, this does not appear to be the case. Setting the AcceptButton property in step 7 of the Try It Out does not seem to override the focus as it should. If the tab order is set such that the LinkLabel control has the focus when the About form is loaded, pressing ENTER opens the link rather than mimicking a click on the OK button.

Replace "strFile" with "fileName" in the ProcessFile procedure:

How It Works code is inconsistent with the Try It Out, so replace:
strLine with currentLine
objReader.ReadLine with myReader.ReadLine
intLineCount with lineCounter
strData with currentData

In the foreground box, the text should read "whitespace" instead of "writespace".

The answers to the chapter 12 questions on page 500 appear under the Chapter 13 heading on page 833.

Step 1, UserControl1.vb should read MyControl.vb

Step 5, My First Control should read MyControl

Try It Out heading and step 1, UserControl1.vb should read MyControl.vb

Step 4, MyControl1 should read MyControl

Raising Events step 1, UserControl1.vb should read MyControl.vb
Consuming Events step 1, Control Test should read MyControl

Step 2, MyControl1.Reset should read MyControl.Reset

Remove <AttributeUsageAttribute(AttributeTargets.All)> from the first line of code in bullet 1 of the Try It Out so it becomes:

Ignore the first paragraph of the How It Works ??? this explanation refers to code that is no longer shown. Remove the first line of the second paragraph, and start the paragraph:
"Our original control was derived from???"

The answers to the chapter 13 questions on page 534 appear under the Chapter 14 heading on page 834.

The second IF statement replaces an ELSE. With the IF instead of the ELSE, the height will now be checked, even if the image width is greater than the available space and has to be resized.

The answers to the chapter 14 questions on page 589 appear under the Chapter 12 heading on page 832.

In part 1 of the Try It Out, change the line of code shown above so that it reads:

Some readers may find that having Simple File Sharing enabled when running on Windows XP Professional can cause security problems that affect how ASP.NET code operates (in particular, issues with IIS and server controls).

Such readers should ensure that they have installed the latest service packs and that Simple File Sharing is disabled.

See MSDN Knowledge Base Article Q315158, "BUG: ASP.NET Does Not Work with the Default ASPNET Account on a Domain Controller", for more details.

Under the answer for chapter 3, question 4, to exit a Do???Loop we use the command Exit Do and not Exit Loop.