System.Management.Automation.PSMemberTypes (enum)

The System.Management.Automation.PSMemberTypes enum is an enumeration (with FlagsAttribute) that enumerates the possible member types with which a PowerShell object can be extended in the Extended Type System or refer to a .NET member.

Compare with the -memberType option of the get-member cmdLet.

Enum name

Value

Comment

.NET member

AliasProperty

An alias to another member

CodeProperty

Reference to a method

Property

A property from the BaseObject

✓

NoteProperty

Name-value pair

ScriptProperty

A property defined by script language

PropertySet

Set of properties

Method

A method from the BaseObject, or made accessible through an adapter

✓

CodeMethod

128

A method that is implemented in a CLR language

ScriptMethod

256

A method that is implemented from a PowerShell Scripts

ParameterizedProperty

512

A member that acts like a property that takes parameters. This is not consider to be a property or a method.

MemberSet

1024

A set of members

Event

2048

All events

✓

Dynamic

4096

All dynamic members (where PowerShell cannot know the type of the member)

InferredProperty

8192

Combination of values:

Enum name

Value

All

16383

The combination of all properties (= 1+2+4+…+8192=16383)

Methods

448

Method, CodeMethod and ScriptMethod

Properties

8223

AliasProperty, CodeProperty, Property, NoteProperty, ScriptProperty and InferredProperty

AliasProperty

PS: 6 C:\Users\rene> get-process | get-member -memberType aliasProperty | select-object name, definition

Name    Definition
----    ----------
Handles Handles = Handlecount
Name    Name = ProcessName
NPM     NPM = NonpagedSystemMemorySize64
PM      PM = PagedMemorySize64
SI      SI = SessionId
VM      VM = VirtualMemorySize64
WS      WS = WorkingSet64

scriptProperty

PS: 6 C:\Users\rene> get-process | get-member -memberType scriptProperty | select-object name, definition

Name           Definition
----           ----------
Company        System.Object Company {get=$this.Mainmodule.FileVersionInfo.CompanyName;}
CPU            System.Object CPU {get=$this.TotalProcessorTime.TotalSeconds;}
Description    System.Object Description {get=$this.Mainmodule.FileVersionInfo.FileDescription;}
FileVersion    System.Object FileVersion {get=$this.Mainmodule.FileVersionInfo.FileVersion;}
Path           System.Object Path {get=$this.Mainmodule.FileName;}
Product        System.Object Product {get=$this.Mainmodule.FileVersionInfo.ProductName;}
ProductVersion System.Object ProductVersion {get=$this.Mainmodule.FileVersionInfo.ProductVersion;}

The .NET property types Property, Method and Events

In most cases, a PowerShell object (which is an instance of System.Management.Automation.PSObject) wraps a .NET object (See also the Extended Type System). The members of the underlying .NET object have one of the object types Method, Property or Event. These are marked with a ✓ in the last column of the first table.

Members with another member type are added to the PowerShell object and are independent from the underlying .NET object.

Such members can be added with the add-member cmdLet. (See especially the -memberType option of that cmdLet).