CODEWITHSUNDEEP
c#asp.net
KellyM
KellyM

Reputation: 2532

ASP.NET Web Forms - Getting Path to To a File From a C# Class

I am creating a class to log errors in a .NET Web Forms application. However, because it is a separate class, I am having a lot of problems mapping to the correct path. Ordinarily I would use ~/, or /, but this does not work. I need it so that whatever Web Forms page calls the class, the application can find the appropriate file to write to. For example, as the code stands now, I get the following error:

$exception  {"Could not find a part of the path 'C:\\Program Files (x86)\\IIS Express\\logs\\errors.txt'."} System.Exception {System.IO.DirectoryNotFoundException}

The class that does the logging:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;


namespace Ticket_System
{

    public static class logger
    {

   const string PATH = "logs/errors.txt";
       public static void logError(Exception ex) {
            using (StreamWriter stream = File.AppendText(PATH))
            {
                stream.Write(ex.Source + "  " + ex.Message + " " + ex.StackTrace + "/n/n");
            }
        }
    }
}

How can I, within logger.cs, be able to reliably access the file (located in sub-directory, logs), regardless of what page calls it.

Thanks!

Upvotes: 1

Views: 2829

Answers (1)

StriplingWarrior
StriplingWarrior

Reputation: 156708

You can use HttpRuntime.AppDomainAppPath to get the path of your current website, or (if you know you'll always be calling this in the context of a Request) you can use HttpContext.Current.Server.MapPath("~").

However, I'd highly recommend that you use an existing logging framework rather than trying to roll your own. It'll save you a lot of headache in the long run.

Upvotes: 2

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