PowerShell will display the content of a stack in the same way as it would the content of an array. It isn't possible to index into a stack. The ToArray() method may be used to convert the stack into an array if required:

$stack.ToArray() 

The preceding command returns an array of the same type as the stack. That is, if a stack is configured to hold strings, the array will be an array of strings.

The stack has a Peek method that allows retrieval of the top element from the stack without it being removed:

$stack.Peek() 

The Peek method will throw an error if the stack is empty (refer to the Removing elements from the stack section).