Is there a way to use Server.MapPath in a class in my asp.net application

Question

I have a log.txt file on the root of my application. I would like to be able to have my log class be able to access this file and write to it. But i am not sure how to tell it the correct path of the file in my code. Thanks for any help

using (StreamWriter w = File.AppendText("log.txt"))
    {
         Log(e.ToString(),w);
         w.Close();
    }

Answer 1

Use

Server.MapPath("~/log.txt")

to get the full file name.

Update:

If you're not inside an ASP page, but in a regular class, try:

System.Web.HttpContext.Current.Server.MapPath("~/log.txt")

Update 2: It looks like you are trying to make your own logging solution. You may consider using an existing solution, like NLog or Log4Net .

Answer 2

Normally you would get that Path from the Web.config .
And it would be a physical file path, not a relative URL path. No MapPath needed.

The easiest way: create it with the Settings designer tool and read it as

 string fname = Properties.Settings.Default.LogFile;