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BOOK: Stephens' C# Programming with Visual Studio 2010 24-Hour Trainer
This is the forum to discuss the Wrox book Stephens' C# Programming with Visual Studio 2010 24-Hour Trainer by Rod Stephens; ISBN: 9780470596906
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Old November 30th, 2011, 07:32 AM
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Default Lesson 7

Hi.
I downloaded the solution from lesson 6, exercise 5 and now try to enter contenRichTextBox.Undo(); but Intellisense doesn´t find anything close to that and when I try to enter the whole thing it´s also wrong.

When looking at the solution from lesson 7 I notice that the names are different on the RichTextBoxes and I then get it to work when I choose richTextBox.Undo() instead.

I had the same problem with some earlier lessons and maybe it could be a god idea to have a small note that the name is the name in your form?

Took me a while to figure out and hopefully I learnd something...

Also I took this opertunity look for the answer, register and make my first question....

Cheers

/Kim
 
Old November 30th, 2011, 11:16 AM
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Default

Hi Kim,

Sorry about that. During editing the technical editors suggested some name changes and unfortunately they did not all get made in both the book and the code. I know it's frustrating and I apologize.

In general if IntelliSense can't find a symbol such as a name, the first thing to check is that the symbol actually exists. In this case (and many others) that means looking at the form or the variable declarations and making sure they are spelled the same way. It's very common for a programmer to name a control LastNameTextBox but then type LastNmeTextBox in the code and not notice the typo.

In fact, you can often avoid that problem by making IntelliSense type for you. In this example, you could type Last and then press Shift+Space to make IntelliSense list the options. Then you can select the name without needing to retype it.

Sorry again.
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Rod Stephens, Microsoft MVP

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