Modifying PowerShell object in a function

Question

function Itil
{
    $_.Font = 'Microsoft Sans Serif, 8.25pt, style=Italic'
    $_.Text = 'Double-click to add username'
    $_.ForeColor = 'ScrollBar'
}

$Username10.Font = 'Microsoft Sans Serif, 8.25pt, style=Italic'
$Username10.Text = 'Double-click to add username'
$Username10.ForeColor = 'ScrollBar'

Is there a way to pass an object into a function without having to name the object itself?

In other words, rather than repeating the same last three lines of code for each $username (there are 10 username textboxes), I can call a function, with the name of the object and make the changes to that object?

Mathias R. Jessen · Accepted Answer · 2018-02-12 14:03:13Z

2

If the input objects are all reference types you can iterate over the $input enumerator:

filter Set-UsernameFieldStyle {
    $input |ForEach-Object {
        $_.Font = 'Microsoft Sans Serif, 8.25pt, style=Italic'
        $_.Text = 'Double-click to add username'
        $_.ForeColor = 'ScrollBar'
    }
}

and use like:

# Input all the elements that need to be styled this way via the pipeline:
$Username1,$Username4,$Username10 |Set-UsernameFieldStyle

answered Feb 12, 2018 at 14:03

Mathias R. Jessen

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1 Comment

PdeRover Over a year ago

Is it possible to do $username$n (where $n is an integer)? ForEach ($n in 1..10 ) { UseSystemPasswordChar $Password$n }

Martin Brandl · Accepted Answer · 2018-02-12 14:04:40Z

1

Mathias provided a nice way using PowerShell filter. However, if you want to use a simple function, this should work:

function Set-BasicProperties
{
    [CmdletBinding()]
    Param
    (
        $UiObject
    )

    $UiObject.Font = 'Microsoft Sans Serif, 8.25pt, style=Italic'
    $UiObject.Text = 'Double-click to add username'
    $UiObject.ForeColor = 'ScrollBar'
}


Set-BasicProperties $Username10

answered Feb 12, 2018 at 14:04

Martin Brandl

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