Dashboard in Sharepoint

# Add SharePoint cmdlets reference
Add-PSSnapin "Microsoft.SharePoint.Powershell" -ErrorAction SilentlyContinue

#Enable Dashboard
$contentSvc = [Microsoft.SharePoint.Administration.SPWebService]::ContentService
$devDahsboardSettings = $contentSvc.DeveloperDashboardSettings
$devDahsboardSettings.DisplayLevel = "On"
$devDahsboardSettings.Update()

#Disable Dashboard
$contentSvc = ([Microsoft.SharePoint.Administration.SPWebService]::ContentService)
$devDahsboardSettings =$contentSvc.DeveloperDashboardSettings
$devDahsboardSettings.DisplayLevel = [Microsoft.SharePoint.Administration.SPDeveloperDashboardLevel]::Off
$devDahsboardSettings.Update()