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Mastering PowerShell Scripting

You're reading from   Mastering PowerShell Scripting Automate and manage your environment using PowerShell 7.1

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Product type Paperback
Published in Jun 2021
Publisher Packt
ISBN-13 9781800206540
Length 788 pages
Edition 4th Edition
Languages
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Author (1):
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Chris Dent Chris Dent
Author Profile Icon Chris Dent
Chris Dent
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Table of Contents (26) Chapters Close

Preface 1. Introduction to PowerShell 2. Modules and Snap-Ins FREE CHAPTER 3. Working with Objects in PowerShell 4. Operators 5. Variables, Arrays, and Hashtables 6. Conditional Statements and Loops 7. Working with .NET 8. Strings, Numbers, and Dates 9. Regular Expressions 10. Files, Folders, and the Registry 11. Windows Management Instrumentation 12. Working with HTML, XML, and JSON 13. Web Requests and Web Services 14. Remoting and Remote Management 15. Asynchronous Processing 16. Graphical User Interfaces 17. Scripts, Functions, and Script Blocks 18. Parameters, Validation, and Dynamic Parameters 19. Classes and Enumerations 20. Building Modules 21. Testing 22. Error Handling 23. Debugging and Troubleshooting 24. Other Books You May Enjoy
25. Index

Creating a class

A class is used to describe an object. This may be any object, which means that a class in PowerShell might be used for any purpose.

Classes in PowerShell are created using the class keyword. The following class contains a single property:

class MyClass {
    [string]$Value = 'My value'
}

You can create the class by using either the New-Object command or the ::new() method:

PS> New-Object MyClass
Value
-----
My value
PS> [MyClass]::new()
Value
-----
My Value

This example creates an instance of the class and displays the property that was defined for the class.

Properties

The properties defined in a class may define a .NET type and may have a default value if required. The following class has a single property with the String type:

class MyClass {
    [string]$Value = 'My value'
}

PowerShell automatically adds hidden get and set methods used to access the property; these cannot be overridden or changed...

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