FileDialogPermission.FromXml メソッド

XML エンコーディングから、指定した状態のアクセス許可を再構築します。

Overrides Public Sub FromXml( _
   ByVal esd As SecurityElement _) Implements ISecurityEncodable.FromXml
[C#]
public override void FromXml(SecurityElementesd);
[C++]
public: void FromXml(SecurityElement* esd);
[JScript]
public override function FromXml(
   esd : SecurityElement);

パラメータ

• esd
  アクセス許可の再構築に使用する XML エンコーディング。

実装

ISecurityEncodable.FromXml

例外

使用例

 
' 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 Function ToFromXmlDemo() As Boolean

    Dim returnValue As Boolean = True

    Dim fileDialog1 As FileDialogPermissionAccess
    Dim fileDialogIdPerm1, fileDialogIdPerm2 As FileDialogPermission
    Dim fileDialogGen1 As New FileDialogGenerator()
    Dim fileDialogGen2 As New FileDialogGenerator()
    fileDialogGen1.ResetIndex()
    While fileDialogGen1.CreateFileDialog(fileDialogIdPerm1, fileDialog1)
        If fileDialogIdPerm1 Is Nothing Then
            GoTo ContinueWhile1
        End If
        Console.WriteLine("********************************************************" & ControlChars.Lf)
        fileDialogGen2.ResetIndex()
        Try
            fileDialogIdPerm2 = New FileDialogPermission(PermissionState.None)
            fileDialogIdPerm2.FromXml(fileDialogIdPerm1.ToXml())
            Console.WriteLine(("Result of ToFromXml = " & fileDialogIdPerm2.ToString()))

        Catch e As Exception
            Console.WriteLine(("ToFromXml failed :" & fileDialogIdPerm1.ToString() & e.ToString()))
            GoTo ContinueWhile1
        End Try
ContinueWhile1:
    End While

    Return returnValue
End Function 'ToFromXmlDemo


[C#] 
// 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 bool ToFromXmlDemo()
{

    bool returnValue = true;

    FileDialogPermissionAccess fileDialog1;
    FileDialogPermission fileDialogIdPerm1,fileDialogIdPerm2;
    FileDialogGenerator fileDialogGen1 = new FileDialogGenerator();
    FileDialogGenerator fileDialogGen2 = new FileDialogGenerator();
    fileDialogGen1.ResetIndex();
    while(fileDialogGen1.CreateFileDialog(out fileDialogIdPerm1, out fileDialog1)) 
    {
        if(fileDialogIdPerm1 == null) continue;
        Console.WriteLine("********************************************************\n");
        fileDialogGen2.ResetIndex();
        try
        {            
            fileDialogIdPerm2= new FileDialogPermission(PermissionState.None);
            fileDialogIdPerm2.FromXml(fileDialogIdPerm1.ToXml());
            Console.WriteLine("Result of ToFromXml = " +
                fileDialogIdPerm2.ToString());

        }
        catch(Exception e) 
        {
            Console.WriteLine("ToFromXml failed :" + fileDialogIdPerm1.ToString() + e);
            continue;
        }
    }

    return returnValue;

}

[C++] 
// 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:
bool ToFromXmlDemo()
{

   bool returnValue = true;

   FileDialogPermissionAccess fileDialog1;
   FileDialogPermission* fileDialogIdPerm1;
   FileDialogPermission* fileDialogIdPerm2;

   FileDialogGenerator* fileDialogGen1 = new FileDialogGenerator();
   FileDialogGenerator* fileDialogGen2 = new FileDialogGenerator();
   fileDialogGen1->ResetIndex();
   while(fileDialogGen1->CreateFileDialog(&fileDialogIdPerm1, &fileDialog1)) 
   {
      if(fileDialogIdPerm1 == 0) continue;
      Console::WriteLine(S"********************************************************\n");
      fileDialogGen2->ResetIndex();
      try
      {            
         fileDialogIdPerm2= new FileDialogPermission(PermissionState::None);
         fileDialogIdPerm2->FromXml(fileDialogIdPerm1->ToXml());
         Console::WriteLine(S"Result of ToFromXml = {0}", fileDialogIdPerm2);

      }
      catch(Exception* e) 
      {
         Console::WriteLine(S"ToFromXml failed :{0}{1}", fileDialogIdPerm1, e);
         continue;
      }
   }

   return returnValue;

}

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必要条件

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ

参照

FileDialogPermission クラス | FileDialogPermission メンバ | System.Security.Permissions 名前空間