Working with Objects Whenever we use PowerShell, we are bound to be using objects. Knowing the basics of .NET and Object-Oriented Programming plays a vital role in your ability to master PowerShell. In this chapter, you will learn the very basics of .NET. The last few recipes are geared...
Working With Custom ObjectsScripting is always fun when the script does all the work for you. For example, suppose you want to get a list of all the files in the folder C:\Scripts, and then sort those files by size (Length). No problem; all you have to do is let the Get-...
I also have to consider what sort of string the object's ToString method should return. By default, most .NET objects return just the name of the type—this isn't very useful. So I'll have the ToString method return the Value rather than the name of the type....
Sometimes Windows PowerShell just doesn’t know when to quit. That’s especially true when you’re working with COM objects (most notably Microsoft Excel). What do we mean when we say that PowerShell “just doesn’t know when to quit”? Well, consider the following script...
Windows PowerShell Tip: Working With Custom Objects Windows PowerShell Tip: Working With SIDs Windows PowerShell Tip: Working With Security Descriptors Working with Hash Tables Accessing WMI from Windows PowerShell Hip, Hip, Array—Retrieving Multi-Valued WMI Properties from Windows PowerShell Do Scri...
That’s especially true when you’re working with COM objects (most notably Microsoft Excel). What do we mean when we say that PowerShell “just doesn’t know when to quit”? Well, consider the following script, a script that: Starts Microsoft Excel ...
Please wait. Working on calculation... C:\PS> $a 87 返回值和管道 从脚本块或函数返回集合时,PowerShell 会自动展开成员,并通过管道一次传递一个成员。 这是由于 PowerShell 的一次处理。 有关详细信息,请参阅about_pipelines。 以下返回数字数组的示例函数说明了此概念。 函数的输出通过管道传递给 cmdlet,Me...
[string] objects are passed into the pipeline at once (the default is to send them all), while the –totalCount parameter controls the total number of lines that are read from the file. Both of these parameters are useful for working with really large files where you might not want to ...
This is the second article in a series about requiring a particular version of PowerShell. The first isRequiring a Version of PowerShell. In this article, we'll learn about the new SemanticVersion object and explore how to test for and work with SemanticVersion objects. ...
Using parameters,Where-Objectfilters collections of objects using common comparison operators. Let’s dive into some examples of how they work. Containment Operators Containment operators are useful when working with collections. Containment operators allow you to define a condition if a collectioncontains...