通过

Thread.CurrentPrincipal 属性

  • 项目

获取或设置线程的当前负责人（对基于角色的安全性而言）。

**命名空间:**System.Threading
**程序集:**mscorlib（在 mscorlib.dll 中）

语法

声明
Public Shared Property CurrentPrincipal As IPrincipal
用法
Dim value As IPrincipal

value = Thread.CurrentPrincipal

Thread.CurrentPrincipal = value

public static IPrincipal CurrentPrincipal { get; set; }

public:
static property IPrincipal^ CurrentPrincipal {
    IPrincipal^ get ();
    void set (IPrincipal^ value);
}

/** @property */
public static IPrincipal get_CurrentPrincipal ()

/** @property */
public static void set_CurrentPrincipal (IPrincipal value)

public static function get CurrentPrincipal () : IPrincipal

public static function set CurrentPrincipal (value : IPrincipal)

属性值

IPrincipal 值，它表示安全上下文。

异常

异常类型 条件

SecurityException

调用方不具有设置该主体所需的权限。

示例

下面的代码示例说明如何设置和检索线程的主体。

Option Explicit
Option Strict

Imports Microsoft.VisualBasic
Imports System
Imports System.Security
Imports System.Security.Permissions
Imports System.Security.Principal
Imports System.Threading

' Request permission to set thread principal.
<Assembly: SecurityPermissionAttribute( _
    SecurityAction.RequestOptional, ControlPrincipal := True)>

Public Class Principal

    <MTAThread> _
    Shared Sub Main()
    
        Dim rolesArray As String() = {"managers", "executives"}
        Try
            ' Set the principal to a new generic principal.
            Thread.CurrentPrincipal = _
                New GenericPrincipal(New GenericIdentity( _
                "Bob", "Passport"), rolesArray)

        Catch secureException As SecurityException
            Console.WriteLine("{0}: Permission to set Principal " & _
                "is denied.", secureException.GetType().Name)
        End Try

        Dim threadPrincipal As IPrincipal = Thread.CurrentPrincipal
        Console.WriteLine( _
            "Name: {0}" & vbCrLf & "IsAuthenticated:" & _
            " {1}" & vbCrLf & "AuthenticationType: {2}", _
            threadPrincipal.Identity.Name, _
            threadPrincipal.Identity.IsAuthenticated, _
            threadPrincipal.Identity.AuthenticationType)
    
    End Sub
End Class

using System;
using System.Security;
using System.Security.Permissions;
using System.Security.Principal;
using System.Threading;

// Request permission to set thread principal.
[assembly: SecurityPermissionAttribute(
    SecurityAction.RequestOptional, ControlPrincipal = true)]
class Principal
{
    static void Main()
    {
        string[] rolesArray = {"managers", "executives"};
        try
        {
            // Set the principal to a new generic principal.
            Thread.CurrentPrincipal = 
                new GenericPrincipal(new GenericIdentity(
                "Bob", "Passport"), rolesArray);
        }
        catch(SecurityException secureException)
        {
            Console.WriteLine("{0}: Permission to set Principal " +
                "is denied.", secureException.GetType().Name);
        }

        IPrincipal threadPrincipal = Thread.CurrentPrincipal;
        Console.WriteLine("Name: {0}\nIsAuthenticated: {1}" +
            "\nAuthenticationType: {2}", 
            threadPrincipal.Identity.Name, 
            threadPrincipal.Identity.IsAuthenticated,
            threadPrincipal.Identity.AuthenticationType);
    }
}

using namespace System;
using namespace System::Security;
using namespace System::Security::Permissions;
using namespace System::Security::Principal;
using namespace System::Threading;

// Request permission to set thread principal.

[assembly:SecurityPermissionAttribute(
SecurityAction::RequestOptional,ControlPrincipal=true)];
[assembly:SecurityPermissionAttribute(
SecurityAction::RequestMinimum,UnmanagedCode=true)];
int main()
{
   array<String^>^rolesArray = {"managers","executives"};
   try
   {
      
      // Set the principal to a new generic principal.
      Thread::CurrentPrincipal = gcnew GenericPrincipal( gcnew GenericIdentity( "Bob","Passport" ),rolesArray );
   }
   catch ( SecurityException^ secureException ) 
   {
      Console::WriteLine( "{0}: Permission to set Principal "
      "is denied.", secureException->GetType()->Name );
   }

   IPrincipal^ threadPrincipal = Thread::CurrentPrincipal;
   Console::WriteLine( "Name: {0}\nIsAuthenticated: {1}"
   "\nAuthenticationType: {2}", threadPrincipal->Identity->Name, threadPrincipal->Identity->IsAuthenticated.ToString(), threadPrincipal->Identity->AuthenticationType );
}

import System.*;
import System.Security.*;
import System.Security.Permissions.*;
import System.Security.Principal.*;
import System.Threading.*;
import System.Threading.Thread;
import System.Security.SecurityManager;

// Request permission to set thread principal.
/** @class.assembly SecurityPermissionAttribute(SecurityAction.RequestOptional,
     ControlPrincipal = true)
 */

class Principal
{
    public static void main(String[] args)
    {
        String rolesArray[] = new String[] { "managers", "executives" };

        try {
            // Set the principal to a new generic principal.
            Thread.set_CurrentPrincipal(new GenericPrincipal
                (new GenericIdentity("Bob", "Passport"), rolesArray));
        }
        catch (SecurityException secureException) {
            Console.WriteLine("{0}: Permission to set Principal " +
                "is denied.", secureException.GetType().get_Name());
        }

        IPrincipal threadPrincipal = Thread.get_CurrentPrincipal();
        Console.WriteLine("Name: {0}\nIsAuthenticated: {1}" +
            "\nAuthenticationType: {2}",
            threadPrincipal.get_Identity().get_Name(),
            String.valueOf(threadPrincipal.get_Identity().get_IsAuthenticated()
            ),threadPrincipal.get_Identity().get_AuthenticationType());
    } //main
} //Principal

.NET Framework 安全性

平台

Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

Thread 类
Thread 成员
System.Threading 命名空间