Csharp/CSharp Tutorial/File Directory Stream/BufferedStream

Материал из .Net Framework эксперт
Версия от 12:20, 26 мая 2010; Admin (обсуждение | вклад) (1 версия)
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Add a buffering layer to FileStream

using System;
using System.Windows.Forms;
using System.IO;
class MainClass
{
  public static void Main() 
  {
    FileStream inStream = File.OpenRead("c:\\text.txt");
    FileStream outStream = File.OpenWrite("c:\\text.txt" + ".bak");
    
    BufferedStream bufInStream = new BufferedStream(inStream);
    BufferedStream bufOutStream = new BufferedStream(outStream);
    byte[] buf = new byte[1024];
    int bytesRead;
    while ((bytesRead = bufInStream.Read(buf, 0, 1024)) > 0)
      bufOutStream.Write(buf, 0, bytesRead);
    bufOutStream.Flush();
    bufOutStream.Close();
    bufInStream.Close();
    outStream.Close();
    inStream.Close();
  }
}

Buffered IO with BufferedStream

using System;
using System.IO;
    class Tester
    {
        
        public static void Main()
        {
            int SizeBuff = 1024;
            Stream inputStream = File.OpenRead("folder3.cs");
            Stream outputStream = File.OpenWrite("folder3.bak");
            BufferedStream bufferedInput = new BufferedStream(inputStream);
            BufferedStream bufferedOutput = new BufferedStream(outputStream);
            byte[] buffer = new Byte[SizeBuff];
            int bytesRead;
            while ((bytesRead =
            bufferedInput.Read(buffer, 0, SizeBuff)) > 0)
            {
                bufferedOutput.Write(buffer, 0, bytesRead);
            }
            bufferedOutput.Flush();
            bufferedInput.Close();
            bufferedOutput.Close();
        }
    }

Use BufferedStream

using System;
using System.IO;
public class MainClass
{
    public static int Main(string[] args)
    {
    FileStream dumpFile = new FileStream("Dump.dat", FileMode.Create, FileAccess.ReadWrite);
    BufferedStream myFileBuffer = new BufferedStream(dumpFile);
    
    byte[] str = {127, 0x77, 0x4, 0x0, 0x0, 0x16};
    myFileBuffer.Write(str, 0, str.Length);
    // add changes to file.
    myFileBuffer.Close();  // Flushes.
    dumpFile.Close();  // Flushes.
    return 0;
    }
}