String originalFile = @"C:\Users\saurane\Desktop\deneme.txt";
String resultFile = @"C:\Users\saurane\Desktop\sonuc.txt";
using (FileStream fs = File.Open(originalFile, FileMode.Open))
using (BufferedStream bs = new BufferedStream(fs))
using (StreamReader sr = new StreamReader(fs))
{
String line;
while (sr.EndOfStream == false)
{
line = sr.ReadLine();
if (line.Length > 1)
{
StringBuilder sb = new StringBuilder();
sb.Insert(0, "??");
sb.Insert(2, line);
sb.Insert(line.Length + 2, "*");
String line_Aux = sb.ToString();
File.AppendAllText(resultFile, line_Aux + "\r\n");
}
}
}