IApplicationTrustManager 介面

定義

命名空間:

System.Security.Policy

組件:

mscorlib.dll

判斷是否應執行應用程式，以及應授與該應用程式的使用權限集合。

public interface class IApplicationTrustManager : System::Security::ISecurityEncodable

[System.Runtime.InteropServices.ComVisible(true)]
public interface IApplicationTrustManager : System.Security.ISecurityEncodable

[<System.Runtime.InteropServices.ComVisible(true)>]
type IApplicationTrustManager = interface
    interface ISecurityEncodable

Public Interface IApplicationTrustManager
Implements ISecurityEncodable

屬性

ComVisibleAttribute

實作

ISecurityEncodable

範例

下列範例顯示 的簡單實作 IApplicationTrustManager 。

// To use the custom trust manager MyTrustManager, compile it into CustomTrustManager.dll, 
// place that assembly in the GAC, and  put the following elements in
// an ApplicationTrust.config file in the config folder in the Microsoft .NET framework
// installation folder.

//<?xml version="1.0" encoding="utf-8" ?>
//                    <ApplicationEntries />
//                    <IApplicationTrustManager class="MyNamespace.MyTrustManager, CustomTrustManager, Version=1.0.0.3, Culture=neutral, PublicKeyToken=5659fc598c2a503e"/>

using System;
using System.Security;
using System.Security.Policy;
using System.Windows.Forms;
namespace MyNamespace
{
    public class MyTrustManager : IApplicationTrustManager
    {
        public ApplicationTrust DetermineApplicationTrust(ActivationContext appContext, TrustManagerContext context)
        {
            ApplicationTrust trust = new ApplicationTrust(appContext.Identity);
            trust.IsApplicationTrustedToRun = false;

            ApplicationSecurityInfo asi = new ApplicationSecurityInfo(appContext);
            trust.DefaultGrantSet = new PolicyStatement(asi.DefaultRequestSet, PolicyStatementAttribute.Nothing);
            if (context.UIContext == TrustManagerUIContext.Run)
            {
                string message = "Do you want to run " + asi.ApplicationId.Name + " ?";
                string caption = "MyTrustManager";
                MessageBoxButtons buttons = MessageBoxButtons.YesNo;
                DialogResult result;

                // Displays the MessageBox.

                result = MessageBox.Show(message, caption, buttons);

                if (result == DialogResult.Yes)
                {
                    trust.IsApplicationTrustedToRun = true;
                    if (context != null)
                        trust.Persist = context.Persist;
                    else
                        trust.Persist = false;
                }
            }

            return trust;
        }

        public SecurityElement ToXml()
        {
            SecurityElement se = new SecurityElement("IApplicationTrustManager");
            se.AddAttribute("class", typeof(MyTrustManager).AssemblyQualifiedName);
            return se;
        }

        public void FromXml(SecurityElement se)
        {
            if (se.Tag != "IApplicationTrustManager" || (string)se.Attributes["class"] != typeof(MyTrustManager).AssemblyQualifiedName)
                throw new ArgumentException("Invalid tag");
        }
    }
}

' To use the custom trust manager MyTrustManager, compile it into CustomTrustManager.dll, 
' place that assembly in the GAC, and  put the following elements in
' an ApplicationTrust.config file in the config folder in the Microsoft .NET framework
' installation folder.
'<?xml version="1.0" encoding="utf-8" ?>
'                    <ApplicationEntries />
'                    <IApplicationTrustManager class="MyNamespace.MyTrustManager, CustomTrustManager, Version=1.0.0.3, Culture=neutral, PublicKeyToken=5659fc598c2a503e"/>
Imports System.Security
Imports System.Security.Policy
Imports System.Windows.Forms


Public Class MyTrustManager
    Implements IApplicationTrustManager
    
    Public Function DetermineApplicationTrust(ByVal appContext As ActivationContext, ByVal context As TrustManagerContext) As ApplicationTrust Implements IApplicationTrustManager.DetermineApplicationTrust
        Dim trust As New ApplicationTrust(appContext.Identity)
        trust.IsApplicationTrustedToRun = False

        Dim asi As New ApplicationSecurityInfo(appContext)
        trust.DefaultGrantSet = New PolicyStatement(asi.DefaultRequestSet, _
        PolicyStatementAttribute.Nothing)
        If context.UIContext = TrustManagerUIContext.Run Then
            Dim message As String = "Do you want to run " + asi.ApplicationId.Name + " ?"
            Dim caption As String = "MyTrustManager"
            Dim buttons As MessageBoxButtons = MessageBoxButtons.YesNo
            Dim result As DialogResult

            ' Displays the MessageBox.
            result = MessageBox.Show(message, caption, buttons)

            If result = DialogResult.Yes Then
                trust.IsApplicationTrustedToRun = True
                If Not (context Is Nothing) Then
                    trust.Persist = context.Persist
                Else
                    trust.Persist = False
                End If
            End If
        End If
        Return trust

    End Function 'DetermineApplicationTrust
    
    Public Function ToXml() As SecurityElement Implements IApplicationTrustManager.ToXml
        Dim se As New SecurityElement("IApplicationTrustManager")
        se.AddAttribute("class", GetType(MyTrustManager).AssemblyQualifiedName)
        Return se

    End Function 'ToXml
    
    Public Sub FromXml(ByVal se As SecurityElement) Implements IApplicationTrustManager.FromXml
        If se.Tag <> "IApplicationTrustManager" OrElse _
        CStr(se.Attributes("class")) <> GetType(MyTrustManager).AssemblyQualifiedName Then
            Throw New ArgumentException("Invalid tag")
        End If

    End Sub
End Class

備註

信任管理員必須實作 IApplicationTrustManager 介面。 主機會呼叫 IApplicationTrustManager.DetermineApplicationTrust 方法來判斷是否應該執行應用程式，以及應授與應用程式的許可權。

在 .NET Framework 4 和更新版本中，只有一個信任管理員，這可以是介面的自訂實作 IApplicationTrustManager 。 預設信任管理員實作會提示使用者取得安裝應用程式的許可權，以及提高授與應用程式的許可權。 其他信任管理員實作可能會提供不同的使用者體驗。 例如，實作可能會檢查受信任的應用程式的企業清單，而不是提示使用者輸入該資訊。

方法

DetermineApplicationTrust(ActivationContext, TrustManagerContext)	判斷是否應執行應用程式，以及應授與該應用程式的使用權限集合。
FromXml(SecurityElement)	透過 XML 編碼，重新建構具有指定狀態的安全性物件。 (繼承來源 ISecurityEncodable)
ToXml()	建立安全物件及其目前狀態的 XML 編碼方式。 (繼承來源 ISecurityEncodable)