Tutorials  PowerShell Cmdlet Help for New-Object


Creates an instance of a Microsoft .NET Framework or COM object.

New-Object -ComObject [-Strict] [-Property ] []

New-Object [-TypeName] [[-ArgumentList] ] [-Property ] []

The New-Object cmdlet creates an instance of a .NET Framework or COM object.

You can specify either the type of a .NET Framework class or a ProgID of a COM object. By default, you type the ful
ly qualified name of a .NET Framework class and the cmdlet returns a reference to an instance of that class. To cre
ate an instance of a COM object, use the ComObject parameter and specify the ProgID of the object as its value.

Specifies a list of arguments to pass to the constructor of the .NET Framework class. Separate elements in the
list by using commas (,). The alias for ArgumentList is Args.

Required? false
Position? 2
Default value
Accept pipeline input? false
Accept wildcard characters? false

Specifies the programmatic identifier (ProgID) of the COM object.

Required? true
Position? named
Default value None
Accept pipeline input? false
Accept wildcard characters? false

Sets property values and invokes methods of the new object.

Enter a hash table in which the keys are the names of properties or methods and the values are property values
or method arguments. New-Object creates the object and sets each property value and invokes each method in the
order that they appear in the hash table.

If the new object is derived from the PSObject class, and you specify a property that does not exist on the obj
ect, New-Object adds the specified property to the object as a NoteProperty. If the object is not a PSObject, t
he command generates a non-terminating error.

Required? false
Position? named
Default value
Accept pipeline input? false
Accept wildcard characters? false

-Strict []
Specifies that an error should be raised if the COM object that you attempt to create uses an interop assembly.
This enables you to distinguish actual COM objects from .NET Framework objects with COM-callable wrappers.

Required? false
Position? named
Default value
Accept pipeline input? false
Accept wildcard characters? false

Specifies the fully qualified name of the .NET Framework class. You cannot specify both the TypeName parameter
and the ComObject parameter.

Required? true
Position? 1
Default value
Accept pipeline input? false
Accept wildcard characters? false

This cmdlet supports the common parameters: Verbose, Debug,
ErrorAction, ErrorVariable, WarningAction, WarningVariable,
OutBuffer and OutVariable. For more information, type,
"get-help about_commonparameters".

You cannot pipe input to this cmdlet.

New-Object returns the object that is created.


New-Object provides the most commonly-used functionality of the VBScript CreateObject function. A statement lik
e Set objShell = CreateObject("Shell.Application") in VBScript can be translated to $objShell = new-object -com
object "Shell.Application" in Windows PowerShell.

New-Object expands upon the functionality available in the Windows Script Host environment by making it easy to
work with .NET Framework objects from the command line and within scripts.

-------------------------- EXAMPLE 1 --------------------------

C:\PS>new-object -typename System.Version -argumentlist ""

Major Minor Build Revision
----- ----- ----- --------
1 2 3 4

This command creates a System.Version object using the string "" as the constructor.

-------------------------- EXAMPLE 2 --------------------------

C:\PS>$ie = new-object -comobject InternetExplorer.Application -property @{navigate2="www.microsoft.com"; visible =

This command creates an instance of the COM object that represents the Internet Explorer application. It uses the P
roperty parameter to call the Navigate2 method and to set the Visible property of the object to $true to make the a
pplication visible.

This command is the equivalent of the following:

$ie = new-object -comobject InternetExplorer.Application
$ie.visible = $true

-------------------------- EXAMPLE 3 --------------------------

C:\PS>$a=new-object -comobject Word.Application -strict -property @{visible=$true}

New-Object : The object written to the pipeline is an instance of the type
"Microsoft.Office.Interop.Word.ApplicationClass" from the component's prima
ry interop assembly. If this type exposes different members than the IDispa
tch members, scripts written to work with this object might not work if the
primary interop assembly is not installed.
At line:1 char:14
+ $a=New-Object <<<< -COM Word.Application -Strict; $a.visible=$true

This command demonstrates that specifying the Strict parameter causes the New-Object cmdlet to generate a non-termi
nating error when the COM object that is created uses an interop assembly.

-------------------------- EXAMPLE 4 --------------------------

C:\PS>$objshell = new-object -comobject "Shell.Application"

C:\PS> $objshell | get-member

C:\PS> $objshell.ToggleDesktop()

The command uses the ComObject parameter to create a COM object with the "Shell.Application" ProgID. It stores the
resulting object in the $objShell variable.

The second command pipes the $objShell variable to the Get-Member cmdlet, which displays the properties and methods
of the COM object.

The third command calls the ToggleDesktop method of the object to minimize the open windows on your desktop.

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