WinForm inside hashtable - winforms

Question

I can set form elements inside hashtable:
$Hash = #{}
$Hash.Main = New-Object System.Windows.Forms.Form
$Hash.Main.Left = 0
$Hash.Main.Top = 0
...
$Hash.Label = New-Object System.Windows.Forms.Label
$Hash.Label.Left = 0
$Hash.Label.Top = 0
...
$Hash.Panel = New-Object System.Windows.Forms.Panel
$Hash.Panel.Left = 0
$Hash.Panel.Top = 0
...
How can I write the same thing inside hashtable? I tried to make it as if it could be. And it works. But is this syntax correct?
$Hash = #{
Main = [System.Windows.Forms.Form] #{
Left = 0
Top = 0
...
}
Label = [System.Windows.Forms.Label] #{
Left = 0
Top = 0
...
}
Panel = [System.Windows.Forms.Panel] #{
Left = 0
Top = 0
...
}
}
Thank you

Answer 1

Yes, this syntax is correct:
Creating Objects from Hash Tables
Beginning in PowerShell 3.0, you can create an object from a hash
table of properties and property values.
The syntax is as follows:
[<class-name>]#{
<property-name>=<property-value>
<property-name>=<property-value>
…
}
This method works only for classes that have a null constructor,
that is, a constructor that has no parameters. The object properties
must be public and settable.
For more information, see about_Object_Creation.
Check the first condition (a constructor that has no parameters):
[System.Drawing.Font], ### does not have empty constructor
[System.Windows.Forms.Form],
[System.Windows.Forms.Label],
[System.Windows.Forms.Panel] |
Where-Object {
'new' -in ( $_ |
Get-Member -MemberType Methods -Static |
Select-Object -ExpandProperty Name ) -and
$_::new.OverloadDefinitions -match ([regex]::Escape('new()'))
} | Select-Object -ExpandProperty FullName
System.Windows.Forms.Form
System.Windows.Forms.Label
System.Windows.Forms.Panel
Check the latter condition (object properties must be public and settable):
[System.Windows.Forms.Form],
[System.Windows.Forms.Label],
[System.Windows.Forms.Panel] |
ForEach-Object {
#{ $_.FullName = (
$_.GetProperties('Instance,Public') | Where-Object CanWrite |
Select-Object -ExpandProperty Name | Sort-Object
)
}
}
Name Value
---- -----
System.Windows.Forms.Form {AcceptButton, AccessibleDefaultActionDescription, Acc...
System.Windows.Forms.Label {AccessibleDefaultActionDescription, AccessibleDescrip...
System.Windows.Forms.Panel {AccessibleDefaultActionDescription, AccessibleDescrip...
Getting both above code snippets together is a trivial task…