Get-WebConfigurationSetting.ps1

function Get-WebConfigurationSetting
{
    <#
    .Synopsis
        Gets settings from web configuration
    .Description
        Gets appSettings from web configuration file
    .Example
        Get-WebConfigurationSetting "MySetting"
    .Link
        ConvertTo-ModuleService
    #>
    [OutputType([Object])]
    param(
    # The name of the setting
    [Parameter(Mandatory=$true,Position=0,ValueFromPipelineByPropertyName=$true,ValueFromPipeline=$true)]
    [Alias('Name')]
    [string]$Setting
    )
    
    process {
        #region Load Config Store
        # If the $request variable and Path_Info variable are found, use the nearby web.config
        if ($Request -and $request.Params -and $request.Params['Path_Info']) {        
            $path  ="$((Split-Path $request['Path_Info']))"    
                        
            $webConfigStore = [Web.Configuration.WebConfigurationManager]::OpenWebConfiguration($path)                                                                               
        } else {
            # Otherwise, try the one at the local path
            try {
                $webConfigStore = [Web.Configuration.WebConfigurationManager]::OpenWebConfiguration($pwd)
            } catch {
                
            }
            
        }    
        #endregion Load Config Store

        if (-not $webConfigStore) { return}

        #region Get the custom setting
        $customSetting = $webConfigStore.AppSettings.Settings["$Setting"];
        
        # If there is a value, return it.
        if ($CustomSetting) {
            $CustomSetting.Value
        }
        #endregion Get the custom setting
        
    }
}