Append to a text file using WriteAllLines

Question

I am using the following code to write in a text file. My problem is that every time the following code is executed it empties the txt file and creates a new one. Is there a way to append to this txt file?

string[] lines = {DateTime.Now.Date.ToShortDateString(),DateTime.Now.TimeOfDay.ToString(), message, type, module };
System.IO.File.WriteAllLines(HttpContext.Current.Server.MapPath("~/logger.txt"), lines);

Answer 1

Use File.AppendAllLines. That should do it

System.IO.File.AppendAllLines(
       HttpContext.Current.Server.MapPath("~/logger.txt"), 
       lines);

Answer 2

File.AppendAllLines should help you:

string[] lines = {DateTime.Now.Date.ToShortDateString(),DateTime.Now.TimeOfDay.ToString(), message, type, module };
System.IO.File.AppendAllLines(HttpContext.Current.Server.MapPath("~/logger.txt"), lines);

Answer 3

You could use StreamWriter; if the file exists, it can be either overwritten or appended to. If the file does not exist, this constructor creates a new file.

string[] lines = { DateTime.Now.Date.ToShortDateString(), DateTime.Now.TimeOfDay.ToString(), message, type, module };

using(StreamWriter streamWriter = new StreamWriter(HttpContext.Current.Server.MapPath("~/logger.txt"), true))
{
    streamWriter.WriteLine(lines);
}