FileIOPermission.ToXml メソッド

.NET Framework クラス ライブラリ リファレンス

FileIOPermission.ToXml メソッド

アクセス許可とその現在の状態を表す XML エンコーディングを作成します。

名前空間: System.Security.Permissions
アセンブリ: mscorlib (mscorlib.dll 内)
構文

Visual Basic (宣言)

Public Overrides Function
 ToXml As SecurityElement

Visual Basic (使用法)

Dim instance As FileIOPermission
Dim returnValue As SecurityElement

returnValue = instance.ToXml

C#

public override SecurityElement ToXml ()

C++

public:
virtual SecurityElement^ ToXml () override

J#

public SecurityElement ToXml ()

JScript

public override function ToXml () : SecurityElement

戻り値
状態情報を含む、アクセス許可の XML エンコーディング。

使用例

Visual Basic

    Private Function ToFromXmlDemo() As
 Boolean

        Dim returnValue As Boolean
 = True

        Dim fileIO1 As String
 = ""
        Dim fileIOPerm1, fileIOPerm2 As FileIOPermission

        Dim fileIOGen1 As New
 FileIOGenerator()
        Dim fileIOGen2 As New
 FileIOGenerator()

        fileIOGen1.ResetIndex()
        While fileIOGen1.CreateFilePath(fileIO1)
            If fileIO1 = "" Then
                fileIOPerm1 = New FileIOPermission(PermissionState.None)
            Else
                fileIOPerm1 = New FileIOPermission(FileIOPermissionAccess.Read,
 fileIO1)
            End If
            Console.WriteLine("********************************************************"
 & ControlChars.Lf)
            fileIOGen2.ResetIndex()
            Try
                fileIOPerm2 = New FileIOPermission(PermissionState.None)
                fileIOPerm2.FromXml(fileIOPerm1.ToXml())
                Console.WriteLine(("Result of ToFromXml = "
 & fileIOPerm2.ToString() & ControlChars.Lf))

            Catch e As Exception
                Console.WriteLine(("ToFromXml failed :"
 & fileIOPerm1.ToString() & e.ToString()))
                GoTo ContinueWhile1
            End Try
ContinueWhile1:
        End While

        Return returnValue
    End Function 'ToFromXmlDemo

C#

private bool ToFromXmlDemo()
{

    bool returnValue = true;

    string fileIO1;
    FileIOPermission fileIOPerm1, fileIOPerm2;

    FileIOGenerator fileIOGen1 = new FileIOGenerator();
    FileIOGenerator fileIOGen2 = new FileIOGenerator();

    fileIOGen1.ResetIndex();
    while (fileIOGen1.CreateFilePath( out fileIO1 ))
    {
        if (fileIO1 == "")
            fileIOPerm1 = new FileIOPermission(PermissionState.None);
        else
            fileIOPerm1 = new FileIOPermission(FileIOPermissionAccess.Read,
 fileIO1);

        Console.WriteLine("********************************************************\n");
        fileIOGen2.ResetIndex();
        try
        {
            fileIOPerm2 = new FileIOPermission(PermissionState.None);
            fileIOPerm2.FromXml(fileIOPerm1.ToXml());
            Console.WriteLine("Result of ToFromXml = " + fileIOPerm2.ToString()
 + "\n");

        }
        catch (Exception e)
        {
            Console.WriteLine("ToFromXml failed :" + fileIOPerm1.ToString()
 + e);
            continue;
        }
    }

    return returnValue;

}

C++

bool ToFromXmlDemo()
{
   bool returnValue = true;
   String^ fileIO1;
   FileIOPermission^ fileIOPerm1;
   FileIOPermission^ fileIOPerm2;
   FileIOGenerator^ fileIOGen1 = gcnew FileIOGenerator;
   FileIOGenerator^ fileIOGen2 = gcnew FileIOGenerator;
   fileIOGen1->ResetIndex();
   while ( fileIOGen1->CreateFilePath( &fileIO1 ) )
   {
      if (fileIO1 == "")
          fileIOPerm1 = gcnew FileIOPermission(PermissionState::None);
       else
           fileIOPerm1 = gcnew FileIOPermission(FileIOPermissionAccess::Read, fileIO1);

      Console::WriteLine( "********************************************************\n"
 );
      fileIOGen2->ResetIndex();
      try
      {
         fileIOPerm2 = gcnew FileIOPermission( PermissionState::None );
         fileIOPerm2->FromXml( fileIOPerm1->ToXml() );
         Console::WriteLine( "Result of ToFromXml = {0}\n", fileIOPerm2
 );
      }
      catch ( Exception^ e ) 
      {
         Console::WriteLine( "ToFromXml failed :{0}{1}", fileIOPerm1, e
 );
         continue;
      }

   }

   return returnValue;
}

J#

// 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;
    String fileIO1[] = new String[1];
    FileIOPermission fileIOPerm1[] = new FileIOPermission[1];
    FileIOPermission fileIOPerm2[] = new FileIOPermission[1];

    FileIOGenerator fileIOGen1 =  new FileIOGenerator();
    FileIOGenerator fileIOGen2 =  new FileIOGenerator();
    
    fileIOGen1.ResetIndex();
    while(fileIOGen1.CreateFilePath(fileIOPerm1, fileIO1, 
        FileIOPermissionAccess.Read)) {
        if (fileIOPerm1[0] == null) {
            continue ;
        }
        Console.WriteLine("**********************************" 
            + "**********************\n");
        fileIOGen2.ResetIndex();
        try {
            fileIOPerm2[0] = new FileIOPermission(PermissionState.None);
            fileIOPerm2[0].FromXml(fileIOPerm1[0].ToXml());
            Console.WriteLine(("Result of ToFromXml = " 
                + fileIOPerm2[0].ToString() + "\n"));
        } 
        catch(System.Exception  e) {
            Console.WriteLine(("ToFromXml failed :" 
                + fileIOPerm1[0].ToString() + e));
            continue ;
        }
    }
    return returnValue ;
} //ToFromXmlDemo    

プラットフォーム

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

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
FileIOPermission クラス
FileIOPermission メンバ
System.Security.Permissions 名前空間