[AndrewStellman]

We did our best to weed out all the typos, language problems, and technical errors before we went to press, but sometimes things slip through -- especially in a book as large and complex as Head First C#. If you found an error, please submit it as errata. I personally go through and verify every error. This way, we'll correct it immediately in the PDF and Safari eBook versions, and it'll get fixed in the next printing.

Errata page: http://oreilly.com/catalog/errata.csp?isbn=0636920000679

(That page also lists all of the reported errata, so there's no need to make a forum post about it as well -- unless you you've got a question or want to start a discussion about it, of course!)

Thanks, and good luck with your C# learning!

[Daniel.Kullik]

Hello,

Out of curiosity: Do you know how long it takes the guys over at Safari Books Online to put the corrections for confirmed errata into the online book? Do they have like 6 months iterations or something like that?


Thanks and kind regards
Daniel

[coder1_32112]

You missed several omissions on page 88 in the second paragraph (Method names).

[Mike684]

Not really an error, but you might want to update it anyway:

page 161 (timer control for the typing game):

//Add a random key to the ListBox
listBox1.Items.Add((Keys)random.Next(65, 91));

use 91 instead of 90. This will include the letter "z"

[eaglecoug]

I am reading the 2nd edition. The farmer program starting on page 204 does not work. I have written the code exactly how the book has it. But when I run the program there are no errors but nothing happens when I click the button, i.e. the Console.WriteLine does not work. I am using visual studios 2012 express so don't know if that is a factor.

[Frederik T]

Hello Head First!

i came to a big problem... maybe it's just me?

i am on side 160 in "head first c#" and i should make a game.

i made the code i wished me to make. buut. when i start the "game" the game aint giving any points or anything. but i wrote a code.. here it is.. help please..

 private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            // If the user pressed a key that's in the ListBox, remove it
            // and then make the game a little faster
            if (listBox1.Items.Contains(e.KeyCode))
            {
                listBox1.Items.Remove(e.KeyCode);
                listBox1.Refresh();
                if (timer1.Interval > 400)
                    timer1.Interval -= 10;
                if (timer1.Interval > 250)
                    timer1.Interval -= 7;
                if (timer1.Interval > 100)
                    timer1.Interval -= 2;
                DifficultyProgressbar.Value = 800 - timer1.Interval;
                // The user pressed a correct key, so update the Stats object
                // by calling its Update() method with the argument true
                stats.Update(true);
            }
            else
            {
                // The user pressed an incorrect key, so update the Stats object
                // by calling its Update() method with the argument false
                stats.Update(false);
            }
            // Update the labels on the StatusStrip
            Correctlabel.Text = "Correct: " + stats.Correct;
            Missedlabel.Text = "Missed: " + stats.Missed;
            Totallabel.Text = "Total: " + stats.Total;
            Accuracylabel.Text = "Accuracy: " + stats.Accuracy + "%";


        }
    }
}

it makes the keys in the box.. but when i press the key. nothing happens and i loose what is wrong?

thanks

[Toxic65]

Yes I'm having the same problem. I have downloaded the code from the website that works ok. The problem is that key press is not recognised so the code for Form1_KeyDown is never accessed. running debug with breakpoints proves this.

I've not figured out why this is and comparing the two has not shown any glaring omissions.

Any further thoughts on this would be appriciated.