[VB.NET][C#.NET] MemoryStream / BufferedStream 类

MemoryStream 跟 StringReader / StringWriter 类用法差不多，但两者还是些微不同；MemoryStream可以将已经写入内存的数据，直接另存到实例文件，而StringWriter不能直接存。

        private void button1_Click(object sender, EventArgs e)

            //引用MemoryStream类

            MemoryStream myMem = new MemoryStream();

            //引用StreamWriter类

            StreamWriter myWriter = new StreamWriter(myMem);

            //写数据至内存

            myWriter.Write("写数据至:");

            myWriter.WriteLine("内存(Memory)");

            //写数据至文件

            myWriter.Flush();

            FileStream myFile = File.Open(@"C:myFile.txt", FileMode.OpenOrCreate);

            myMem.WriteTo(myFile);

            //释放

            myFile.Dispose();

            myWriter.Dispose();

            myMem.Dispose();

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        '引用MemoryStream类

        Dim myMem As MemoryStream = New MemoryStream()

        '引用StreamWriter类

        Dim myWriter As StreamWriter = New StreamWriter(myMem)

        '写数据至内存

        myWriter.Write("写数据至:")

        myWriter.WriteLine("内存(Memory)")

        '写数据至文件

        myWriter.Flush()

        Dim myFile As FileStream = File.Open("C:myFile.txt", FileMode.OpenOrCreate)

        myMem.WriteTo(myFile)

        '释放

        myFile.Dispose()

        myWriter.Dispose()

        myMem.Dispose()

    End Sub

BufferedStream 类，是将缓冲层加入另一数据流上的读写。

有时候直接将数据写入文件性能并不好，由其是在处理大笔数据时，为了提高处理效率可以使用BufferedStream 类，将数据写入缓冲区内，当缓冲区被全部清除输出时，数据才会真正的被写入数据。

        private void button2_Click(object sender, EventArgs e)

            FileStream myFile = File.Open(@"C:myFile.txt", FileMode.Create, FileAccess.Write, FileShare.Write);

            BufferedStream myBuf = new BufferedStream(myFile);

            StreamWriter myWrite = new StreamWriter(myBuf);

            myWrite.Write("写入缓冲区");

            myWrite.WriteLine("步骤还真麻烦");

            myBuf.Flush();

            //释放

            myWrite.Dispose();

            myBuf.Dispose();

            myFile.Dispose();

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

        Dim myFile As FileStream = File.Open("C:myFile.txt", FileMode.Create, FileAccess.Write, FileShare.Write)

        Dim myBuf As BufferedStream = New BufferedStream(myFile)

        Dim myWrite As StreamWriter = New StreamWriter(myBuf)

        myWrite.Write("写入缓冲区")

        myWrite.WriteLine("步骤还真麻烦")

        myBuf.Flush()

        '释放

        myWrite.Dispose()

        myBuf.Dispose()

        myFile.Dispose()

    End Sub

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