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GenericPrincipal Class

Represents a generic principal.

Namespace:  System.Security.Principal
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public Class GenericPrincipal _
	Implements IPrincipal
'Usage
Dim instance As GenericPrincipal

This class represents the roles of the current user.

The following example shows the use of members of the GenericPrincipal class.

Imports System
Imports System.Security.Principal

Public Class Form1
    Inherits System.Windows.Forms.Form

    ' Event handler for Run button. 
    Private Sub Button1_Click( _
        ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles Button1.Click

        tbxOutput.Cursor = Cursors.WaitCursor
        tbxOutput.Text = "" 

        ' Retrieve a GenericPrincipal that is based on the current user's 
        ' WindowsIdentity. 
        Dim genericPrincipal As GenericPrincipal = GetGenericPrincipal()

        ' Retrieve the generic identity of the GenericPrincipal object. 
        Dim principalIdentity As GenericIdentity = _
            CType(genericPrincipal.Identity, GenericIdentity)

        ' Display identity name and authentication type. 
        If (principalIdentity.IsAuthenticated) Then
            WriteLine(principalIdentity.Name)
            WriteLine("Type:" + principalIdentity.AuthenticationType)
        End If 

        ' Verify that the generic principal has been assigned the 
        ' NetworkUser role. 
        If (genericPrincipal.IsInRole("NetworkUser")) Then
            WriteLine("User belongs to the NetworkUser role.")
        End If
        WriteLine("This sample completed successfully; " + _
            " press Exit to continue.")
        tbxOutput.Cursor = Cursors.Default
    End Sub 
    ' Create generic principal based on values from the current 
    ' WindowsIdentity. 
    Private Function GetGenericPrincipal() As GenericPrincipal
        ' Use values from the current WindowsIdentity to construct 
        ' a set of GenericPrincipal roles. 
        Dim roles(10) As String 
        Dim windowsIdentity As WindowsIdentity = windowsIdentity.GetCurrent()

        If (windowsIdentity.IsAuthenticated) Then 
            ' Add custom NetworkUser role.
            roles(0) = "NetworkUser" 
        End If 

        If (windowsIdentity.IsGuest) Then 
            ' Add custom GuestUser role.
            roles(1) = "GuestUser" 
        End If 


        If (windowsIdentity.IsSystem) Then 
            ' Add custom SystemUser role.
            roles(2) = "SystemUser" 
        End If 

        ' Construct a GenericIdentity object based on the current Windows 
        ' identity name and authentication type. 
        Dim authenticationType As String = windowsIdentity.AuthenticationType
        Dim userName As String = windowsIdentity.Name
        Dim genericIdentity = _
            New GenericIdentity(userName, authenticationType)

        ' Construct a GenericPrincipal object based on the generic identity 
        ' and custom roles for the user. 
        Dim genericPrincipal As New GenericPrincipal(genericIdentity, roles)

        Return genericPrincipal
    End Function 
    ' Write out message with linefeed and carriage return. 
    Private Sub WriteLine(ByVal message As String)
        tbxOutput.AppendText(message + vbCrLf)
    End Sub 

    ' Event handler for Exit button. 
    Private Sub Button2_Click( _
        ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles Button2.Click

        Application.Exit()
    End Sub
#Region " Windows Form Designer generated code " 

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call 

    End Sub 

    'Form overrides dispose to clean up the component list. 
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then 
            If Not (components Is Nothing) Then
                components.Dispose()
            End If 
        End If 
        MyBase.Dispose(disposing)
    End Sub 

    'Required by the Windows Form Designer 
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer 
    'It can be modified using the Windows Form Designer.   
    'Do not modify it using the code editor. 
    Friend WithEvents Panel2 As System.Windows.Forms.Panel
    Friend WithEvents Panel1 As System.Windows.Forms.Panel
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents tbxOutput As System.Windows.Forms.RichTextBox
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.Panel2 = New System.Windows.Forms.Panel
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Panel1 = New System.Windows.Forms.Panel
        Me.tbxOutput = New System.Windows.Forms.RichTextBox
        Me.Panel2.SuspendLayout()
        Me.Panel1.SuspendLayout()
        Me.SuspendLayout()
        
        'Panel2 
        
        Me.Panel2.Controls.Add(Me.Button1)
        Me.Panel2.Controls.Add(Me.Button2)
        Me.Panel2.Dock = System.Windows.Forms.DockStyle.Bottom
        Me.Panel2.DockPadding.All = 20
        Me.Panel2.Location = New System.Drawing.Point(0, 320)
        Me.Panel2.Name = "Panel2" 
        Me.Panel2.Size = New System.Drawing.Size(616, 64)
        Me.Panel2.TabIndex = 1
        
        'Button1 
        
        Me.Button1.Dock = System.Windows.Forms.DockStyle.Right
        Me.Button1.Font = New System.Drawing.Font( _
            "Microsoft Sans Serif", _
            9.0!, _
            System.Drawing.FontStyle.Regular, _
            System.Drawing.GraphicsUnit.Point, _
            CType(0, Byte))
        Me.Button1.Location = New System.Drawing.Point(446, 20)
        Me.Button1.Name = "Button1" 
        Me.Button1.Size = New System.Drawing.Size(75, 24)
        Me.Button1.TabIndex = 2
        Me.Button1.Text = "&Run" 
        
        'Button2 
        
        Me.Button2.Dock = System.Windows.Forms.DockStyle.Right
        Me.Button2.Font = New System.Drawing.Font( _
            "Microsoft Sans Serif", _
            9.0!, _
            System.Drawing.FontStyle.Regular, _
            System.Drawing.GraphicsUnit.Point, _
            CType(0, Byte))
        Me.Button2.Location = New System.Drawing.Point(521, 20)
        Me.Button2.Name = "Button2" 
        Me.Button2.Size = New System.Drawing.Size(75, 24)
        Me.Button2.TabIndex = 3
        Me.Button2.Text = "E&xit" 
        
        'Panel1 
        
        Me.Panel1.Controls.Add(Me.tbxOutput)
        Me.Panel1.Dock = System.Windows.Forms.DockStyle.Fill
        Me.Panel1.DockPadding.All = 20
        Me.Panel1.Location = New System.Drawing.Point(0, 0)
        Me.Panel1.Name = "Panel1" 
        Me.Panel1.Size = New System.Drawing.Size(616, 320)
        Me.Panel1.TabIndex = 2
        
        'tbxOutput 
        
        Me.tbxOutput.AccessibleDescription = _
            "Displays output from application." 
        Me.tbxOutput.AccessibleName = "Output textbox." 
        Me.tbxOutput.Dock = System.Windows.Forms.DockStyle.Fill
        Me.tbxOutput.Location = New System.Drawing.Point(20, 20)
        Me.tbxOutput.Name = "tbxOutput" 
        Me.tbxOutput.Size = New System.Drawing.Size(576, 280)
        Me.tbxOutput.TabIndex = 1
        Me.tbxOutput.Text = "Click the Run button to run the application." 
        
        'Form1 
        
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 15)
        Me.ClientSize = New System.Drawing.Size(616, 384)
        Me.Controls.Add(Me.Panel1)
        Me.Controls.Add(Me.Panel2)
        Me.Name = "Form1" 
        Me.Text = "GenericPrincipal" 
        Me.Panel2.ResumeLayout(False)
        Me.Panel1.ResumeLayout(False)
        Me.ResumeLayout(False)

    End Sub

#End Region
End Class

System.Object
  System.Security.Principal.GenericPrincipal
    System.Web.Security.PassportPrincipal

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
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