Unhandled Exception "System Error"

[axi0m1989]

I am trying to code a button that will prompt you for credentials and then do an if/else statement on them. It doesnt seem to like -match. If i use -like or -contains then do not get this system error exception but i can't figure out why its throwing the error.

Error.png (12.11 KiB) Viewed 670 times

This is what im trying to use and have attached the error in a txt document.

Code: Select all

	$Cred = Get-Credential
	$ADGroupMembers = Get-ADGroupMember "Name of AD Group"
	if ($ADGroupMembers.samaccountname -match $cred.UserName)
	{
		continue
	}
	Else
	{
		[System.Windows.Forms.MessageBox]::Show("User does not have permissions to load, Please reach out to Device Support", "LTI", 'OK')
		Return
	}
}

[jvierra]

"Match" requires a regex expression. "Like" requires a wild card.

[axi0m1989]

So i changed the code to this and while i no longer get the error it is failing to check properly. This code does work without GUI if i do the checks in powershell ISE

Code: Select all

$button1_Click={
	#TODO: Place custom script here
	$Cred = Get-Credential
	$ADUser = Get-ADUser $Cred.UserName -Properties memberof
	if ($ADUser.memberof -like "*Groupname*")
	{
		continue
	}
	Else
	{
		[System.Windows.Forms.MessageBox]::Show("User does not have permissions to load, Please reach out to Device Support", "MH - LTI", 'OK')
		Return
	}
}

[jvierra]

"MemberOf" is a list of items so "like" will not work as expected.

I recommend taking some time to learn basic programming primitives that allow us to match select and filter items and groups.

if(Get-ADUser $Cred.UserName -Properties memberof).memberOf -contains 'Groupname' ){

[axi0m1989]

Running that code causes the system error.

Code: Select all

$button1_Click={
	#TODO: Place custom script here
	$Cred = Get-Credential
	if ((Get-ADUser $Cred.UserName -Properties memberof).memberof -contains "GroupDistinguishedName")
		{
			continue
		}
	
	else
	{
		[System.Windows.Forms.MessageBox]::Show("User does not have permissions to load, Please reach out to Device Support", "LTI", 'OK')
		Return
	}
}

[axi0m1989]

Narrowing it down. The system error is related to the "continue" if the check works correctly

[jvierra]

Likely the user does not exist. Get user separately to be sure you have one.

[axi0m1989]

User exists, I can test this outside of Powershell Studio without GUI and it works fine. It just doesnt like the word "Continue" for some reason

[jvierra]

The word I posted is "contains". You really need to take time to learn PowerShell basics and these things wouldn't happen.
if(Get-ADUser $Cred.UserName -Properties memberof).memberOf -contains 'Groupname'){