в 15:31, 26 мая 2010

2010-05-26T15:31:19Z

Admin: 1 версия

2010-05-26T11:45:36Z

1 версия

Новая страница

==Create a FileStream for the BufferedStream.==

<source lang="csharp">

using System;
using System.IO;
class BufStreamApp
{
static void Main(string[] args)
{
FileStream fs = new FileStream("Hoo.txt",FileMode.Create, FileAccess.ReadWrite);
BufferedStream bs = new BufferedStream(fs);
Console.WriteLine("Length: {0}\tPosition: {1}",bs.Length, bs.Position);

for (int i = 0; i < 64; i++)
{
bs.WriteByte((byte)i);
}
Console.WriteLine("Length: {0}\tPosition: {1}", bs.Length, bs.Position);
byte[] ba = new byte[bs.Length];
bs.Position = 0;
bs.Read(ba, 0, (int)bs.Length);
foreach (byte b in ba)
{
Console.Write("{0,-3}", b);
}

string s = "Foo";
for (int i = 0; i < 3; i++)
{
bs.WriteByte((byte)s[i]);
}
Console.WriteLine("\nLength: {0}\tPosition: {1}\t",bs.Length, bs.Position);

for (int i = 0; i < (256-67)+1; i++)
{
bs.WriteByte((byte)i);
}
Console.WriteLine("\nLength: {0}\tPosition: {1}\t", bs.Length, bs.Position);

bs.Close();
}
}
</source>

==illustrates use of BufferedStreams==

<source lang="csharp">
/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy
Publisher: Sybex;
ISBN: 0782129110
*/
/*
Example15_14.cs illustrates use of BufferedStreams
*/
using System;
using System.Windows.Forms;
using System.IO;
public class Example15_14
{
[STAThread]
public static void Main()
{
// use an open file dialog to get a filename
OpenFileDialog dlgOpen = new OpenFileDialog();
dlgOpen.Title="Select file to back up";
if (dlgOpen.ShowDialog() == DialogResult.OK)
{
// create the raw streams
FileStream inStream = File.OpenRead(dlgOpen.FileName);
FileStream outStream =
File.OpenWrite(dlgOpen.FileName + ".bak");
// add a buffering layer
BufferedStream bufInStream = new BufferedStream(inStream);
BufferedStream bufOutStream = new BufferedStream(outStream);
byte[] buf = new byte[4096];
int bytesRead;
// copy all data from in to out via the buffer layer
while ((bytesRead = bufInStream.Read(buf, 0, 4096)) > 0)
bufOutStream.Write(buf, 0, bytesRead);
// clean up
bufOutStream.Flush();
bufOutStream.Close();
bufInStream.Close();
outStream.Close();
inStream.Close();
}
}
}

</source>

← Предыдущая	Версия 15:31, 26 мая 2010
(нет различий)

Csharp/C Sharp/File Stream/BufferedStream - История изменений

в 15:31, 26 мая 2010

Admin: 1 версия