UIPermission.FromXml-Methode

Rekonstruiert aus einer XML-Codierung eine Berechtigung mit einem angegebenen Zustand.

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

Syntax

'Declaration
Public Overrides Sub FromXml ( _
    esd As SecurityElement _
)
'Usage
Dim instance As UIPermission
Dim esd As SecurityElement

instance.FromXml(esd)

public override void FromXml (
    SecurityElement esd
)

public:
virtual void FromXml (
    SecurityElement^ esd
) override

public void FromXml (
    SecurityElement esd
)

public override function FromXml (
    esd : SecurityElement
)

Parameter

• esd
  Die zum Wiederherstellen der Berechtigung verwendete XML-Codierung.

Ausnahmen

Beispiel

Das vollständige Beispiel finden Sie unter der UIPermission-Klasse.

    Private Function ToFromXmlDemo() As Boolean
        Dim returnValue As Boolean = True

        Dim ui1 As UIPermissionWindow
        Dim cb1 As UIPermissionClipboard
        Dim uiIdPerm1, uiIdPerm2 As UIPermission
        Dim uiGen1 As New UIGenerator()
        Dim uiGen2 As New UIGenerator()
        uiGen1.ResetIndex()
        While uiGen1.CreateUI(ui1, cb1)
            uiIdPerm1 = New UIPermission(ui1, cb1)
            Console.WriteLine("********************************************************" & ControlChars.Lf)
            uiGen2.ResetIndex()
            Try
                uiIdPerm2 = New UIPermission(PermissionState.None)
                uiIdPerm2.FromXml(uiIdPerm1.ToXml())
                Console.WriteLine(("Result of ToFromXml = " & uiIdPerm2.ToString()))

            Catch e As Exception
                Console.WriteLine(("ToFromXml failed :" & uiIdPerm1.ToString() & e.ToString()))
                GoTo ContinueWhile1
            End Try
ContinueWhile1:
        End While

        Return returnValue
    End Function 'ToFromXmlDemo

private bool ToFromXmlDemo()
{
    bool returnValue = true;

    UIPermissionWindow ui1;
    UIPermissionClipboard cb1;
    UIPermission uiIdPerm1, uiIdPerm2;
    UIGenerator uiGen1 = new UIGenerator();
    UIGenerator uiGen2 = new UIGenerator();
    uiGen1.ResetIndex();
    while (uiGen1.CreateUI( out ui1, out cb1))
    {
        uiIdPerm1 = new UIPermission(ui1, cb1);
        Console.WriteLine("********************************************************\n");
        uiGen2.ResetIndex();
        try
        {
            uiIdPerm2 = new UIPermission(PermissionState.None);
            uiIdPerm2.FromXml(uiIdPerm1.ToXml());
            Console.WriteLine("Result of ToFromXml = " +
                uiIdPerm2.ToString());

        }
        catch (Exception e)
        {
            Console.WriteLine("ToFromXml failed :" + uiIdPerm1.ToString() + e);
            continue;
        }
    }

    return returnValue;

}

   bool ToFromXmlDemo()
   {
      bool returnValue = true;
      UIPermissionWindow ui1;
      UIPermissionClipboard cb1;
      UIPermission^ uiIdPerm1;
      UIPermission^ uiIdPerm2;
      UIGenerator^ uiGen1 = gcnew UIGenerator;
      UIGenerator^ uiGen2 = gcnew UIGenerator;
      uiGen1->ResetIndex();
      while ( uiGen1->CreateUI(   &ui1,  &cb1 ) )
      {
         uiIdPerm1 = gcnew UIPermission( ui1, cb1 );

         Console::WriteLine( "********************************************************\n" );
         uiGen2->ResetIndex();
         try
         {
            uiIdPerm2 = gcnew UIPermission( PermissionState::None );
            uiIdPerm2->FromXml( uiIdPerm1->ToXml() );
            Console::WriteLine( "Result of ToFromXml = {0}", uiIdPerm2 );
         }
         catch ( Exception^ e ) 
         {
            Console::WriteLine( "ToFromXml failed :{0}{1}", uiIdPerm1, e );
            continue;
         }

      }

      return returnValue;
   }


public:

// ToXml creates an XML encoding of the permission and its current state;
// FromXml reconstructs a permission with the specified state from the 
// XML encoding.
private boolean ToFromXmlDemo()
{
    boolean returnValue = true;
    UIPermissionWindow ui1[] = new UIPermissionWindow[1];
    UIPermissionClipboard cb1[] = new UIPermissionClipboard[1];
    UIPermission uiIdPerm1[] = new UIPermission[1];
    UIPermission uiIdPerm2 = null;
    UIGenerator uiGen1 = new UIGenerator();
    UIGenerator uiGen2 = new UIGenerator();

    uiGen1.ResetIndex();
    while (uiGen1.CreateUI(uiIdPerm1, ui1, cb1)) {
        if (uiIdPerm1 == null) {
            continue;
        }
        Console.WriteLine("*************************************" 
            + "*******************\n");
        uiGen2.ResetIndex();
        try {
            uiIdPerm2 = new UIPermission(PermissionState.None);
            uiIdPerm2.FromXml(uiIdPerm1[0].ToXml());
            Console.WriteLine(("Result of ToFromXml = " 
                + uiIdPerm2.ToString()));
        }
        catch (System.Exception e) {
            Console.WriteLine(("ToFromXml failed :" 
                + uiIdPerm1[0].ToString() + e));
            continue;
        }
    }
    return returnValue;
} //ToFromXmlDemo

Plattformen

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

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

UIPermission-Klasse
UIPermission-Member
System.Security.Permissions-Namespace