IsolatedStorageFileStream.CanRead 屬性

定義

命名空間:

System.IO.IsolatedStorage

組件:

System.IO.IsolatedStorage.dll

來源:

IsolatedStorageFileStream.cs

取得布林值，指出是否可讀取檔案。

public:
 virtual property bool CanRead { bool get(); };

public override bool CanRead { get; }

member this.CanRead : bool

Public Overrides ReadOnly Property CanRead As Boolean

屬性值

Boolean

如果可讀取 IsolatedStorageFileStream 物件，則為 true；否則為 false。

範例

下列程式代碼範例示範如何使用 CanRead 屬性，以檢查是否可在呼叫 Read 或 BeginRead 方法之前讀取數據流。 如需此範例的完整內容，請參閱概 IsolatedStorageFileStream 觀。

// This is the stream to which data will be written.
IsolatedStorageFileStream^ source = gcnew IsolatedStorageFileStream( this->userName,FileMode::OpenOrCreate,isoFile );

// This is the stream from which data will be read.
Console::WriteLine( "Is the source file readable?  {0}", (source->CanRead ? (String^)"true" : "false") );
Console::WriteLine( "Creating new IsolatedStorageFileStream for Archive." );

// Open or create a writable file.
IsolatedStorageFileStream^ target = gcnew IsolatedStorageFileStream( String::Concat("Archive\\",this->userName),FileMode::OpenOrCreate,FileAccess::Write,FileShare::Write,isoFile );

IsolatedStorageFileStream source =
    new IsolatedStorageFileStream(this.userName, FileMode.OpenOrCreate,
    isoFile);
// This is the stream from which data will be read.
Console.WriteLine("Is the source file readable? " + (source.CanRead ? "true" : "false"));
Console.WriteLine("Creating new IsolatedStorageFileStream for Archive.");

// Open or create a writable file.
IsolatedStorageFileStream target =
    new IsolatedStorageFileStream("Archive\\ " + this.userName,
    FileMode.OpenOrCreate,
    FileAccess.Write,
    FileShare.Write,
    isoFile);

' Open or create a writable file.
Dim target As New IsolatedStorageFileStream("Archive\ " & Me.userName, _
     FileMode.OpenOrCreate, FileAccess.Write, FileShare.Write, isoFile)

備註

使用這個屬性來判斷是否可以 IsolatedStorageFileStream 讀取物件。