class1.cs

C#150例

using System;
using System.IO;

public class Class1 
{
	public static void Main() 
	{

		// create a reference to a file, which may or may not exist
		// if it doesn't exist, it is not yet created
		FileInfo fi = new FileInfo("temp.txt");

		// create a writer, ready to add entries to the file
		StreamWriter sw = fi.AppendText();

		sw.WriteLine("Add as many lines as you like...");
		sw.WriteLine("Add another line to the output...");
		sw.Flush();
		sw.Close();

		// get the information out of the file, and print it to screen
		StreamReader sr = new StreamReader( fi.OpenRead() );

		Console.WriteLine("This is the information in the first file:");
		while (sr.Peek() != -1)
			Console.WriteLine( sr.ReadLine() );

		// copy this file to ANOTHER file. The true parameter indicates
		// to overwrite the file if it already exists
		FileInfo newfi = fi.CopyTo("newTemp.txt", true);

		// get the information out of the new file, and print it to screen
		sr = new StreamReader( newfi.OpenRead() );

		Console.WriteLine("{0}This is the information in the second file:", Environment.NewLine);
		while (sr.Peek() != -1)
			Console.WriteLine( sr.ReadLine() );
	}
}