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using (StreamWriter sw = File.CreateText(Server.MapPath(Ïà¶Ô·¾¶))) 
  {
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using (StreamReader sr = File.OpenText(Server.MapPath(Ïà¶Ô·¾¶))) 
  {
  string s = "";
  while ((s = sr.ReadLine()) != null) 
  {
  Console.WriteLine(s);
  }
  }


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C# code:
// it will be done when the form close.
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
FileStream file = File.Open(@"C:\dataBegin.txt", FileMode.Open);
StreamWriter sWriter = new StreamWriter(file);

//change the record in the file.
sWr


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  struct hostent *hp; 
char AlarmDevIP[20];  
  int x2;

hp = gethostbyname("www.google.com");
if (hp)
{ ......

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  SqlConnection cn = new SqlConnection("Data Source=20090713-1752\\SQLEXPRESS;Initial Catalog=goods;Integrated Security=True");
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