using System;
using System.IO;
public class CompBuf {
private const string FILE_NAME = "MyFile.txt";
public static void Main(String[] args) {
if (!File.Exists(FILE_NAME)) {
Console.WriteLine("{0} does not exist!", FILE_NAME);
return;
}
FileStream fsIn = new FileStream(FILE_NAME, FileMode.Open,
FileAccess.Read, FileShare.Read);
// Create a reader that can read characters from the FileStream.
StreamReader sr = new StreamReader(fsIn);
// While not at the end of the file, read lines from the file.
while (sr.Peek()>-1) {
String input = sr.ReadLine();
Console.WriteLine (input);
}
sr.Close();
}
}

using System;
using System.IO;
class DirAppend
{
public static void Main(String[] args)
{
StreamWriter w = File.AppendText("log.txt");
Log ("Test1", w);
Log ("Test2", w);
// Close the writer and underlying file.
w.Close();
// Open and read the file.
StreamReader r = File.OpenText("log.txt");
DumpLog (r);
}

public static void Log (String logMessage, TextWriter w)
{
w.Write("\r\nLog Entry : ");
w.WriteLine("{0} {1}", DateTime.Now.ToLongTimeString(),
DateTime.Now.ToLongDateString());
w.WriteLine(" :");
w.WriteLine(" :{0}", logMessage);
w.WriteLine ("-------------------------------");
// Update the underlying file.
w.Flush();
}

public static void DumpLog (StreamReader r)
{
// While not at the end of the file, read and write lines.
String line;
while ((line=r.ReadLine())!=null)
{
Console.WriteLine(line);
}
r.Close();
}
}

using System;
using System.IO;
class MyStream {
private const string FILE_NAME = "Test.data";
public static void Main(String[] args) {
// Create the new, empty data file.
if (File.Exists(FILE_NAME)) {
Console.WriteLine("{0} already exists!", FILE_NAME);
return;
}
FileStream fs = new FileStream(FILE_NAME, FileMode.CreateNew);
// Create the writer for data.
BinaryWriter w = new BinaryWriter(fs);
// Write data to Test.data.
for (int i = 0; i < 11; i++) {
w.Write( (int) i);
}
w.Close();
fs.Close();
// Create the reader for data.
fs = new FileStream(FILE_NAME, FileMode.Open, FileAccess.Read);
BinaryReader r = new BinaryReader(fs);
// Read data from Test.data.
for (int i = 0; i < 11; i++) {
Console.WriteLine(r.ReadInt32());
w.Close();
}
}
}