using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;

public partial class example1006_readfile : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
		spanMessage.InnerHtml = "read file now - single user mode<br>";
		
		string FullFilePath = Server.MapPath("temptxt") + "\\myfile1.txt";
		
		StreamWriter w;
		w = File.CreateText(FullFilePath);
		w.WriteLine("I wrote line 1");
		w.WriteLine("I wrote line 2");
		w.WriteLine("I wrote line 3");
		w.Flush();		//make sure all data written to disk
		w.Close();
		
		
		//open for single user
		StreamReader r = File.OpenText(FullFilePath);
		string line;
		do {
			line = r.ReadLine();
			spanMessage.InnerHtml = spanMessage.InnerHtml + line +"<br>" ;
		} while (line != null);
		r.Close();	
		
		spanMessage.InnerHtml = spanMessage.InnerHtml+"read file now - multi user mode<br>";
		//open for multi-users
		FileStream fs = File.Open(FullFilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
		StreamReader r1 = new StreamReader(fs);
		
		do {
			line = r1.ReadLine();
			spanMessage.InnerHtml = spanMessage.InnerHtml + line +"<br>" ;
			
		} while (line != null);
		fs.Close();
		
		File.Delete(FullFilePath);	
		
    }

}