How creat and fill data in notpad file?

 

  public static void Main()
    {
     string _file = C:\\MyTextFile.txt;
     if (File.Exists(_file)
     {
        AppendToFile(_file );
     }
     else
     {
        WriteToFile(_file );

     }
   }
 
static void WriteToFile(string _file )
    {
    StreamWriter SW;
    SW=File.CreateText(_file );
    SW.WriteLine("God is greatest of them all");
    SW.WriteLine("This is second line");
    SW.Close();
    Console.WriteLine("File Created SucacessFully");
    }

    static void AppendToFile(string _file )
    {
    StreamWriter SW;
    SW=File.AppendText(_file );
    SW.WriteLine("This Line Is Appended");
    SW.Close();
    Console.WriteLine("Text Appended Successfully");
    }