param (
    [parameter(Mandatory = $true)] 
    [ValidateNotNullOrEmpty()] 
    [System.IO.FileInfo] $MSIPATH
) 
if (!(Test-Path $MSIPATH.FullName)) { 
    throw "File '{0}' does not exist" -f $MSIPATH.FullName 
} 
try { 
    $WindowsInstaller = New-Object -com WindowsInstaller.Installer 
    $Database = $WindowsInstaller.GetType().InvokeMember("OpenDatabase", "InvokeMethod", $Null, $WindowsInstaller, @($MSIPATH.FullName, 0)) 
    $Query = "SELECT Value FROM Property WHERE Property = 'ProductVersion'"
    $View = $database.GetType().InvokeMember("OpenView", "InvokeMethod", $Null, $Database, ($Query)) 
    $View.GetType().InvokeMember("Execute", "InvokeMethod", $Null, $View, $Null) | Out-Null
    $Record = $View.GetType().InvokeMember( "Fetch", "InvokeMethod", $Null, $View, $Null ) 
    $Version = $Record.GetType().InvokeMember( "StringData", "GetProperty", $Null, $Record, 1 ) 
    return $Version
}
catch { 
    throw "Failed to get MSI file version: {0}." -f $_
}