Question

I have a following script in PS:

[System.Xml.XmlDocument] $Config;

function Get-ScriptDirectory
{
    Split-Path $script:MyInvocation.MyCommand.Path
}

function LoadConfig
{
    $configPath = Join-Path (Get-ScriptDirectory) Config.xml    
    $Config = [xml](gc $configPath) 
}

function WriteData
{
    $sourceFolderPath = $Config.Deploy.SourceFolder
    Write-Host $sourceFolderPath   
}

LoadConfig
WriteData

My basic xml file looks like:

<Deploy>
    <SourceFolder>C:\FolderPath</SourceFolder>
<Deploy>

When I debuging it in PowerGUI tool it works fine and it writes the correct output. But when I run the same script in powershell console in Windows 7, the result is empty line. I have no idea why.

Answer 1

Your script has a trouble, as you declare [System.Xml.XmlDocument] $Config at the begining of your script, you have to use $global:Config in LoadConfig function. For more explanations have look to Get-Help about_Scopes.

function LoadConfig 
{ 
    $configPath = Join-Path (Get-ScriptDirectory) Config.xml     
    $global:Config = [xml](gc $configPath)  
}

Why does it work in PowerGui ? Because $config exist in your session, you’d better configure PowerGui like I show in the following picture.