System.Security.Principal
Microsoft.CSharp.RuntimeBinder
Microsoft.Devices
Microsoft.Devices.Radio
Microsoft.Devices.Sensors
Microsoft.Internal
Microsoft.Phone
Microsoft.Phone.Automation.Peers
Microsoft.Phone.BackgroundAudio
Microsoft.Phone.BackgroundTransfer
Microsoft.Phone.Controls
Microsoft.Phone.Controls.Primitives
Microsoft.Phone.Data.Linq
Microsoft.Phone.Data.Linq.Mapping
Microsoft.Phone.DeviceManufacturers
Microsoft.Phone.Globalization
Microsoft.Phone.Info
Microsoft.Phone.Maps
Microsoft.Phone.Maps.Controls
Microsoft.Phone.Maps.Services
Microsoft.Phone.Marketplace
Microsoft.Phone.Media
Microsoft.Phone.Net.NetworkInformation
Microsoft.Phone.Networking.Voip
Microsoft.Phone.NetworkOperators
Microsoft.Phone.Notification
Microsoft.Phone.Scheduler
Microsoft.Phone.SecureElement
Microsoft.Phone.Shell
Microsoft.Phone.Storage
Microsoft.Phone.Tasks
Microsoft.Phone.UserData
Microsoft.Phone.Wallet
Microsoft.Win32.SafeHandles
System
System.CodeDom.Compiler
System.Collections
System.Collections.Generic
System.Collections.ObjectModel
System.Collections.Specialized
System.ComponentModel
System.Configuration.Assemblies
System.Data
System.Data.Common
System.Data.Linq
System.Data.Linq.Mapping
System.Data.Linq.SqlClient
System.Device.Location
System.Diagnostics
System.Diagnostics.CodeAnalysis
System.Diagnostics.Contracts
System.Diagnostics.SymbolStore
System.Dynamic
System.Globalization
System.IO
System.IO.IsolatedStorage
System.Linq
System.Linq.Expressions
System.Net
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System.Net.NetworkInformation
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System.Reflection
System.Reflection.Emit
System.Resources
System.Runtime
System.Runtime.CompilerServices
System.Runtime.ExceptionServices
System.Runtime.InteropServices
System.Runtime.InteropServices.Automation
System.Runtime.InteropServices.ComTypes
System.Runtime.InteropServices.WindowsRuntime
System.Runtime.Serialization
System.Runtime.Serialization.Json
System.Runtime.Versioning
System.Security
System.Security.Cryptography
System.Security.Cryptography.X509Certificates
System.Security.Permissions
System.Security.Principal
IIdentity Interface
IPrincipal Interface
TokenImpersonationLevel Enumeration
System.ServiceModel
System.ServiceModel.Channels
System.ServiceModel.Description
System.ServiceModel.Dispatcher
System.ServiceModel.Security
System.Text
System.Text.RegularExpressions
System.Threading
System.Threading.Tasks
System.Windows
System.Windows.Automation
System.Windows.Automation.Peers
System.Windows.Automation.Provider
System.Windows.Automation.Text
System.Windows.Controls
System.Windows.Controls.Primitives
System.Windows.Data
System.Windows.Documents
System.Windows.Ink
System.Windows.Input
System.Windows.Interop
System.Windows.Markup
System.Windows.Media
System.Windows.Media.Animation
System.Windows.Media.Effects
System.Windows.Media.Imaging
System.Windows.Media.Media3D
System.Windows.Navigation
System.Windows.Resources
System.Windows.Shapes
System.Windows.Threading
System.Xml
System.Xml.Linq
System.Xml.Schema
System.Xml.Serialization
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System.Security.Principal Namespace

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

The System.Security.Principal namespace defines a principal object that represents the security context under which code is running.

  InterfaceDescription
Public interfaceIIdentityDefines the basic functionality of an identity object.
Public interfaceIPrincipalDefines the basic functionality of a principal object.

  EnumerationDescription
Public enumerationTokenImpersonationLevelDefines security impersonation levels. Security impersonation levels govern the degree to which a server process can act on behalf of a client process.

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