New-UsingBlock

New-UsingBlock.

Syntax

New-UsingBlock [-InputObject] <IDisposable> [-ScriptBlock] <ScriptBlock>

Detailed Description

The New-UsingBlock command disposes of the provided input object after the specified scriptblock completes execution. You may find the data returned by the scriptblock is contained within the following object System.Collections.ObjectModel.Collection1[[System.Management.Automation.PSObject, System.Management.Automation, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]`. This helps when multiple objects are returned and is known behavior.

© 2010-2019 Adam Najmanowicz, Michael West. All rights reserved. Sitecore PowerShell Extensions

Parameters

-InputObject <IDisposable>

Object that should be disposed after the Script block is executed.

Aliases
Required?	true
Position?	1
Default Value
Accept Pipeline Input?	false
Accept Wildcard Characters?	false

-ScriptBlock <ScriptBlock>

Script to be executed within the "Using" context.

Aliases
Required?	true
Position?	2
Default Value
Accept Pipeline Input?	false
Accept Wildcard Characters?	false

Inputs

The input type is the type of the objects that you can pipe to the cmdlet.

• System.IDisposable

Outputs

The output type is the type of the objects that the cmdlet emits.

• void

Notes

Help Author: Adam Najmanowicz, Michael West

Examples

EXAMPLE 1

Assuming all items under /sitecore/content/home have both 'Title' and 'MetaTitle' fields... Using New-UsingBlock to bulk update items under /sitecore/Content/ to have their 'MetaTitle' field to be equal to the 'Title' field

New-UsingBlock (New-Object Sitecore.Data.BulkUpdateContext) {
foreach ( $item in (Get-ChildItem -Path master:\Content\Home -Recurse -WithParent) ) {
        $item."MetaTitle" = $item.Title
    }
}

EXAMPLE 2

Using New-UsingBlock to perform a test with UserSwitcher - checking whether an anonymous user can change a field The test should end up showing the error as below and the Title should not be changed!

$anonymous = Get-User -Identity "extranet\Anonymous"
$testItem = Get-Item -Path master:\Content\Home

New-UsingBlock (New-Object Sitecore.Security.Accounts.UserSwitcher $anonymous) {
    $testItem.Title = "If you can see this title it means that anonymous users can change this item!"
}


New-UsingBlock : Exception setting "Title": "Exception calling "Modify" with "3" argument(s): "The current user does not have write access to this item. User: extranet\Anonymous, Item: Home ({110D559F-DEA5-42EA-9C1C-8A5DF7E70EF9})""
At line:3 char:1
+ New-UsingBlock (New-Object Sitecore.Security.Accounts.UserSwitcher $a ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [New-UsingBlock], SetValueInvocationException
    + FullyQualifiedErrorId : ScriptSetValueRuntimeException,Spe.Commands.Data.NewUsingBlockCommand

Related Topics

• https://github.com/SitecorePowerShell/Console/