IsolatedStorageFileStream.Close 方法

public:
 override void Close();

public override void Close();

override this.Close : unit -> unit

Public Overrides Sub Close ()

示例

下面的代码示例演示 Close 方法。

IsolatedStorageFileStream source =
     new IsolatedStorageFileStream(this.userName,FileMode.Open,isoFile);
 // This stream is the one that data will be read from
 Console.WriteLine("Source can be read?" + (source.CanRead?"true":"false"));
 IsolatedStorageFileStream target =
     new IsolatedStorageFileStream("Archive\\ " + this.userName,FileMode.OpenOrCreate,isoFile);
 // This stream is the one that data will be written to
 Console.WriteLine("Target is writable?" + (target.CanWrite?"true":"false"));
 // Do work...
 // After you have read and written to the streams, close them
 source.Close();
 target.Close();

Dim source As New IsolatedStorageFileStream(UserName,FileMode.Open,isoFile)
 ' This stream is the one that data will be read from
 If source.CanRead Then
     Console.WriteLine("Source can read ? true")
 Else
     Console.WriteLine("Source can read ? false")
 End If
 Dim target As New IsolatedStorageFileStream("Archive\\ " & UserName, _
                                             FileMode.OpenOrCreate, _
                                             isoFile)
 ' This stream is the one that data will be written to
 If target.CanWrite Then
     Console.WriteLine("Target is writable? true")
 Else
     Console.WriteLine("Target is writable? false")
 End If
 ' After you have read and written to the streams, close them
 source.Close()
 target.Close()

注解

之前写入缓冲区的任何数据将复制到文件流关闭之前，因此在调用 Close 之前无需调用 Flush 。

调用 Close 后，文件流上的任何操作都可能会引发异常。 调用一次后 Close ，如果再次调用，则不执行任何操作。 该方法 Finalize() 调用 Close，以便在垃圾回收器完成对象之前关闭文件流。

IsolatedStorageFileStream 对象需要确定 IsolatedStorageFile 所访问文件的存储上下文的对象。 对于在未传递 IsolatedStorageFile 对象的情况下打开的流，将为执行程序集创建默认 IsolatedStorageFile 对象，然后在调用 Close 期间关闭。