This PowerShell script creates a hierarchical list of objects with DisplayName, ID, and ParentID properties, organized into three levels. It also builds a HashTable to store these objects and calculates a FullPath property for each object by recursively resolving the hierarchy using the ParentID. The FullPath represents the hierarchical path fro…

FullPathHashtable.ps1

# Define the list of objects
$objects = @(
    # Level 1
    [PSCustomObject]@{ DisplayName = "Root1"; ID = 1; ParentID = $null }
    [PSCustomObject]@{ DisplayName = "Root2"; ID = 2; ParentID = $null }

    # Level 2
    [PSCustomObject]@{ DisplayName = "Child1.1"; ID = 3; ParentID = 1 }
    [PSCustomObject]@{ DisplayName = "Child1.2"; ID = 4; ParentID = 1 }
    [PSCustomObject]@{ DisplayName = "Child2.1"; ID = 5; ParentID = 2 }
    [PSCustomObject]@{ DisplayName = "Child2.2"; ID = 6; ParentID = 2 }

    # Level 3
    [PSCustomObject]@{ DisplayName = "GrandChild1.1.1"; ID = 7; ParentID = 3 }
    [PSCustomObject]@{ DisplayName = "GrandChild1.1.2"; ID = 8; ParentID = 3 }
    [PSCustomObject]@{ DisplayName = "GrandChild1.2.1"; ID = 9; ParentID = 4 }
    [PSCustomObject]@{ DisplayName = "GrandChild2.1.1"; ID = 10; ParentID = 5 }
    [PSCustomObject]@{ DisplayName = "GrandChild2.1.2"; ID = 11; ParentID = 5 }
    [PSCustomObject]@{ DisplayName = "GrandChild2.2.1"; ID = 12; ParentID = 6 }

    # Additional objects to make 15 total
    [PSCustomObject]@{ DisplayName = "Child1.3"; ID = 13; ParentID = 1 }
    [PSCustomObject]@{ DisplayName = "GrandChild1.3.1"; ID = 14; ParentID = 13 }
    [PSCustomObject]@{ DisplayName = "GrandChild1.3.2"; ID = 15; ParentID = 13 }
)

# Create a HashTable to store the objects
$ObjectsHashTable = @{}

# Loop through the objects and create a HashTable
foreach($Object in $Objects){
    $ObjectsHashTable[$Object.ID] = [PSCustomObject]@{
        DisplayName = $Object.DisplayName
        ID = $Object.ID
        ParentID = $Object.ParentID
        # Create a full path for the object by looking up the parent object in the HashTable using the ParentID
        FullPath = $(
            if($null -eq $Object.ParentID){
                $Object.DisplayName
            }else {
                $ObjectsHashTable[$Object.ParentID].FullPath + '\' + $Object.DisplayName
            }
        )
    }
}