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ListBox issue

Posted: Wed Oct 21, 2015 1:25 pm
by ltwillis
I have the PS script below:
PowerShell Code
Double-click the code block to select all.
$holdval2 = Get-Mailbox $MailboxAddress.Text
	$WhenMailboxCreated.Text = $holdval2.WhenMailboxCreated
	$ADUserObjectCreated.Text = $holdval2.WhenCreated
	
	$EA = $holdval2.EmailAddresses
	Load-ListBox $Proxys $EA
$EA ends up holding a list of email addresses (6 of them) in an array. But the only thing that displays in the ListBox is "(Collection)", which is obviously not what is wanted here. I would like for the 6 email addresses to show up in the ListBox, one per line.

What am I missing here?

ListBox issue

Posted: Wed Oct 21, 2015 1:25 pm
by SAPIEN Support Forums
This is an automated post. A real person will respond soon.

Thank you for posting, ltwillis.

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Re: ListBox issue

Posted: Wed Oct 21, 2015 1:41 pm
by jvierra
Use this:

$proxys.Items.AddRange($EA)

Re: ListBox issue

Posted: Fri Oct 23, 2015 8:10 am
by ltwillis
I didn't see your post/reply until today. I found the issue though. Turns out just had to make one simple change to line 5 as below:

[System.Array]$EA = $holdval2.EmailAddresses

For some reason, the data type for $EA was being set to ArrayList instead of just Array, and the Load-Listbox function is expecting an object of data type [array]. So once I added the "[System.Array]" right before $EA it all worked perfectly.

By the way, do you know exactly what the difference is between the two data types Array and ArrayList??? and why are there two?

Thanks again.

Re: ListBox issue

Posted: Fri Oct 23, 2015 8:19 am
by jvierra
ArrayList is correct however you had only one item in the list so it failed. Forcing it to be an array allowed the function to create an arraylist.

This is what is happening:
PowerShell Code
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PS C:\scripts> [collections.arraylist]'xxx'
Cannot convert the "xxx" value of type "System.String" to type "System.Collections.ArrayList".
At line:1 char:1
+ [collections.arraylist]'xxx'
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [], RuntimeException
    + FullyQualifiedErrorId : ConvertToFinalInvalidCastException

PS C:\scripts> [collections.arraylist][array]'xxx'
xxx
PS C:\scripts>
If the object passed is not an array then the cast fails. Forcing the string into an array fixes this.

A simple way is @('some string')