PowerShell: Loading a array into a WPF ListBox

Question

Starting with this bit of code from this answer:

stringList.ForEach(item => listBox1.Items.Add(item));

I've put my own variables into the line like so:

$listAgencies = $Window.FindName('listAgencies')
$arr_listAgencies = ($hash_AgencyOffices['ADMIN1','ADMIN2'].Keys | ForEach-Object ToString)
$arr_listAgencies.ForEach(item => $listAgencies.Items.Add(item))

I have confirmed that $arr_listAgencies is a list of the values I need in the ListBox $listAgencies, but I'm guessing I am entirely missing the importance of item in that last line: (item => $listAgencies.Items.Add(item)).

When I run this PS kindly informs me that there is a missing ')' in method call and there is an unexpected token 'item' in expression or statement.

Is item supposed to be $._, the pipeline variable? I thought that might have been it and tried it, but the error was essentially the same.

What am I missing?

SomeShinyObject · Accepted Answer · 2017-06-20 23:54:47Z

3

In item => {code} the => operator is not available in PowerShell. It's a lambda expression operator for C#.

In order to achieve what you want, try this

$arr_listAgencies | ForEach-Object {
    $listAgencies.Items.Add($_) | Out-Null
}

answered Jun 20, 2017 at 23:54

SomeShinyObject

7,8316 gold badges41 silver badges60 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

music2myear Over a year ago

That indeed worked. Thank you for clarifying that for me.

Collectives™ on Stack Overflow

PowerShell: Loading a array into a WPF ListBox

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related