IsolatedStorageFile.Dispose Metode

Definisi

Ruang nama:

System.IO.IsolatedStorage

Rakitan:

System.IO.IsolatedStorage.dll

Sumber:

IsolatedStorageFile.cs

Merilis semua sumber daya yang IsolatedStorageFiledigunakan oleh .

public:
 virtual void Dispose();

public void Dispose ();

abstract member Dispose : unit -> unit
override this.Dispose : unit -> unit

Public Sub Dispose ()

Penerapan

Dispose()

Contoh

Contoh kode berikut membuka file penyimpanan yang terisolasi, menggunakannya untuk menulis informasi ke aliran, menutup file, lalu menggunakan metode untuk merilis Dispose semua sumber daya.

IsolatedStorageFile^ isoFile;
isoFile = IsolatedStorageFile::GetUserStoreForDomain();

// Open or create a writable file.
IsolatedStorageFileStream^ isoStream = gcnew IsolatedStorageFileStream( this->userName,FileMode::OpenOrCreate,FileAccess::Write,isoFile );
StreamWriter^ writer = gcnew StreamWriter( isoStream );
writer->WriteLine( this->NewsUrl );
writer->WriteLine( this->SportsUrl );

// Calculate the amount of space used to record the user's preferences.
double d = isoFile->CurrentSize / isoFile->MaximumSize;
Console::WriteLine( "CurrentSize = {0}", isoFile->CurrentSize.ToString() );
Console::WriteLine( "MaximumSize = {0}", isoFile->MaximumSize.ToString() );
writer->Close();
isoFile->Close();
isoStream->Close();
return d;

IsolatedStorageFile isoFile;
isoFile = IsolatedStorageFile.GetUserStoreForDomain();

// Open or create a writable file.
IsolatedStorageFileStream isoStream =
    new IsolatedStorageFileStream(this.userName,
    FileMode.OpenOrCreate,
    FileAccess.Write,
    isoFile);

StreamWriter writer = new StreamWriter(isoStream);
writer.WriteLine(this.NewsUrl);
writer.WriteLine(this.SportsUrl);
// Calculate the amount of space used to record the user's preferences.
double d = isoFile.CurrentSize / isoFile.MaximumSize;
Console.WriteLine("CurrentSize = " + isoFile.CurrentSize.ToString());
Console.WriteLine("MaximumSize = " + isoFile.MaximumSize.ToString());
// StreamWriter.Close implicitly closes isoStream.
writer.Close();
isoFile.Dispose();
isoFile.Close();
return d;

Dim isoFile As IsolatedStorageFile
isoFile = IsolatedStorageFile.GetUserStoreForDomain()

' Open or create a writable file.
Dim isoStream As New IsolatedStorageFileStream(Me.userName, FileMode.OpenOrCreate, _
    FileAccess.Write, isoFile)

Dim writer As New StreamWriter(isoStream)
writer.WriteLine(Me.NewsUrl)
writer.WriteLine(Me.SportsUrl)
' Calculate the amount of space used to record the user's preferences.
Dim d As Double = Convert.ToDouble(isoFile.CurrentSize) / Convert.ToDouble(isoFile.MaximumSize)
Console.WriteLine(("CurrentSize = " & isoFile.CurrentSize.ToString()))
Console.WriteLine(("MaximumSize = " & isoFile.MaximumSize.ToString()))
' StreamWriter.Close implicitly closes isoStream.
writer.Close()
isoFile.Dispose()
isoFile.Close()
Return d

Keterangan

Hubungi Dispose ketika Anda selesai menggunakan IsolatedStorageFile. Metode ini Dispose meninggalkan IsolatedStorageFile dalam keadaan tidak dapat digunakan. Setelah memanggil Dispose, Anda harus melepaskan semua referensi ke IsolatedStorageFile sehingga pengumpul sampah dapat mengklaim kembali memori yang IsolatedStorageFile menempati.

Catatan

Selalu panggil Buang sebelum Anda merilis referensi terakhir Anda ke IsolatedStorageFile. Jika tidak, sumber daya yang IsolatedStorageFileStream digunakan tidak akan dibebaskan IsolatedStorageFileStream sampai pengumpulan sampah memanggil metode objek Finalize .

Lihat juga

• Penyimpanan Terisolasi