Remove-TypeData

Deletes extended types from the current session.

Syntax

Remove-TypeData
      -TypeData <TypeData>
      [-WhatIf]
      [-Confirm]
      [<CommonParameters>]
Remove-TypeData
      [-TypeName] <String>
      [-WhatIf]
      [-Confirm]
      [<CommonParameters>]
Remove-TypeData
      -Path <String[]>
      [-WhatIf]
      [-Confirm]
      [<CommonParameters>]

Description

The Remove-TypeData cmdlet deletes extended type data from the current session. This cmdlet affects only the current session and sessions that are created in the current session.

You can add properties and methods to objects in PowerShell by defining them in Update-TypeData commands and Types.ps1xml files. Remove-TypeData deletes those extended properties and methods from the current session. Remove-TypeData does not delete the Types.ps1xml files or delete any extended type definitions from the Types.ps1xml files. For more information about Types.ps1xml files, see about_Types.ps1xml.

This cmdlet was introduced in Windows PowerShell 3.0.

Examples

Example 1: Remove type data for a specified type

This example deletes all type data for the System.Array type from the session, including type data that was added by a Types.ps1xml file and dynamic type data that was added to the session by using the Update-TypeData cmdlet.

Remove-TypeData -TypeName System.Array

Example 2: Remove an extended data type from a session

This example shows the effect of removing extended type data from a session. The first Get-TypeData gets extended type data for the System.DateTime type. The output shows that a DateTime property has been added to all System.DateTime objects in PowerShell. The Get-Date cmdlet returns a System.DateTime object. The command uses dot notation to get the value of the DateTime property of the System.DateTime object that Get-Date returns.

Get-TypeData System.DateTime
(Get-Date).DateTime
Get-TypeData System.DateTime | Remove-TypeData
(Get-Date).DateTime

TypeName        Members
--------        -------
System.DateTime {[DateTime, System.Management.Automation.Runspaces.ScriptPropertyData]}

Friday, January 20, 2012 9:01:00 PM

The next Get-TypeData cmdlet to get all extended type data for the System.DateTime type and pipes that to the Remove-TypeData cmdlet to delete the extended type data. The last Get-Date cmdlet shows the effect of deleting the extended type data for the System.DateTime type. Because the System.DateTime property no longer exists, a command to get its value returns nothing.

Example 3: Remove extended types for modules

This example removes all extended type data for module objects. When you pipe an object to Remove-TypeData, Remove-TypeData gets the name of the object type and removes all type data for all objects of that type.

Get-Module | Remove-TypeData

Example 4: Remove extended types from specified modules

This example uses the Path parameter of the Remove-TypeData cmdlet to remove the extended types that are defined in the Types.ps1xml files that are added by the PSScheduledJob and PSWorkflow modules. This command does not affect dynamic type data that is added by using the Update-TypeData cmdlet. The command succeeds only when the modules have been imported into the current session.

Remove-TypeData -Path "$PSHOME\Modules\PSScheduledJob", "$PSHOME\Modules\PSWorkflow\PSWorkflow.types.ps1xml"

For more information about modules, see about_Modules.

Example 5: Remove extended types from a remote session

This example removes extended types from a remote session. The command uses the Invoke-Command cmdlet to remove extended type data for all CIM types in the sessions in the $S variable.

Invoke-Command -Session $S {Get-TypeData -TypeName *CIM* | Remove-TypeData}

Parameters

-Confirm

Prompts you for confirmation before running the cmdlet.

Type:SwitchParameter
Aliases:cf
Position:Named
Default value:False
Accept pipeline input:False
Accept wildcard characters:False
-Path

Specifies an array of files that this cmdlet deletes from the session extended type data. This parameter is required.

Enter the paths and file names of one or more Types.ps1xml files. Wildcards are not supported. If you omit the path, the default location is the current directory.

Type:String[]
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-TypeData

Specifies the type data that this cmdlet deletes from the session. This parameter is required. Enter a variable that contains TypeData objects (System.Management.Automation.Runspaces.TypeData) or a command that gets TypeData objects, such as a Get-TypeData command. You can also pipe TypeData objects to Remove-TypeData.

Type:TypeData
Position:Named
Default value:None
Accept pipeline input:True
Accept wildcard characters:False
-TypeName

Specifies the types that this cmdlet deletes all extended type data for. For types in the System namespace, enter the short name. Otherwise, the full type name is required. Wildcards are not supported.

You can pipe type names to Remove-TypeData. When you pipe an object to Remove-TypeData, Remove-TypeData gets the type name of the object and removes all type data for the object type.

Type:String
Position:0
Default value:None
Accept pipeline input:True
Accept wildcard characters:False
-WhatIf

Shows what would happen if the cmdlet runs. The cmdlet is not run.

Type:SwitchParameter
Aliases:wi
Position:Named
Default value:False
Accept pipeline input:False
Accept wildcard characters:False

Inputs

TypeData

You can pipe TypeData object, such as the ones that the Get-TypeData cmdlet returns, to Remove-TypeData.

String

You can pipe the type names to Remove-TypeData. When you pipe an object to Remove-TypeData, Remove-TypeData gets the type name of the object and removes all type data for the object type.

Outputs

None

This cmdlet does not generate any output.

Notes

Remove-TypeData can remove only the extended type data in the current session. It cannot remove extended type data that is on the computer, but has not been added to the current session, such as extended types that are defined in modules that have not been imported into the current session.