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Mark J Price 2023-02-06 11:27:56 +00:00
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If you find any mistakes in the seventh edition, *C# 11 and .NET 7 - Modern Cross-Platform Development Fundamentals*, or if you have suggestions for improvements, then please [raise an issue in this repository](https://github.com/markjprice/cs11dotnet7/issues) or email me at markjprice (at) gmail.com.
[**Errata** (25 items)](errata.md): Typos, tool user interface changes, or mistakes in code that would cause a compilation error that prevents a successful build.
[**Errata** (26 items)](errata.md): Typos, tool user interface changes, or mistakes in code that would cause a compilation error that prevents a successful build.
[**Improvements** (4 items)](improvements.md): Changes to text or code that would improve the content. These are optional.

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**Errata** (25 items)
**Errata** (26 items)
If you find any mistakes, then please [raise an issue in this repository](https://github.com/markjprice/cs11dotnet7/issues) or email me at markjprice (at) gmail.com.
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- [Page 277 - Making a value type nullable](#page-277---making-a-value-type-nullable)
- [Page 322 - Revealing the location of a type](#page-322---revealing-the-location-of-a-type)
- [Page 330 - Publishing a self-contained app, Page 354 - Exercise 7.3 – Explore PowerShell](#page-330---publishing-a-self-contained-app-page-354---exercise-73--explore-powershell)
- [Page 399 - Managing directories](#page-399---managing-directories)
- [Page 412 - Compressing streams](#page-412---compressing-streams)
- [Page 477 - Inserting entities](#page-477---inserting-entities)
- [Page 627 - Defining a typed view](#page-627---defining-a-typed-view)
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In the **Good Practice** box on page 330, I wrote about how you can automate commands using scripts written in the PowerShell language. My original plan was to write content about PowerShell in the GitHub repository. But PowerShell is a massive topic and there will always be higher priority content to create that is specifically about C# and .NET. In the next edition I will just reference the official PowerShell documentation: https://learn.microsoft.com/en-us/powershell/ And I will remove **Exercise 7.3** that suggests exploring PowerShell.
# Page 399 - Managing directories
> Thanks to [Dario Bosco](https://github.com/DarioBosco) for raising this [issue on 6 February 2023](https://github.com/markjprice/cs11dotnet7/issues/26).
In Step 1, in the second bullet, I wrote, "Check for the existence of the custom directory path using the `Exists` method of the
`Directory` class." But in the code I used the `Exists` method of the `Path` class. We have statically imported both the `Path` and the `Directory` classes and they both have an `Exists` method. If we try to call an `Exists` method without a classname prefix we get a compile error due to ambiguity of which one to call. After writing the second bullet text, I changed the code from using `Directory` to using `Path` simply because it is shorter. In the 8th edition, I will add a note about this since it is useful for the reader to understand my choice and how the reader could have done it differently.
# Page 412 - Compressing streams
> Thanks to Bob Molloy for raising this issue via email.