powershell中的动态变量和值分配 [英] Dynamic variable and value assignment in powershell

问题描述

如何在运行时声明变量并为其赋值.

How can I declare variables and assign values to them at run time.

原因:我从 sql server 获取这些变量值，这些变量值本质上是可配置的

Reason: I am fetching these variables values from sql server and these variable values are configurable in nature

到目前为止我尝试过的代码

   [array]$varArray = @($($ServerName),$($HostName)) 

 foreach($varname in $varArray)
        {
          $varname = "some test value"
        }

Write-Host $ServerName
Write-Host $HostName

推荐答案

使用动态命名变量的最简单方法是使用字典:

The simplest way of using dynamically named variables would be a dictionary:

$vars = @{}  # create empty dictionary

# add key/value pairs to dictionary:
$vars["foo"] = 23
$vars["bar"] = "foobar"
$vars["baz"] = Get-Content C:\sample.txt

另一种方法是动态声明变量:

Another way would be to declare variables on the fly:

$name  = "foo"
$value = "bar"

New-Variable $name $value

echo $foo

或者，您可以创建一个自定义对象并按照 Kyle C 的建议添加属性.这种方法类似于字典，但在技术上有所不同.

Or you could create a custom object and add properties as Kyle C suggested. That approach is similar to a dictionary, although technically different.

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