How to write a file using physical path

Question

1.00/5 (1 vote)

See more:

i want to write a exception in text file it takes virtual path its write the file only in virtual path.but i want to write that file in physicl path

What I have tried:

string dir = "D:\\Oracle Logs\\Error.txt";  // folder location
               if (!Directory.Exists(dir))
               {
                   Directory.CreateDirectory(dir);
                   File.AppendAllText(Server.MapPath("D:\\Oracle Logs\\Error.txt"), "Message :" + ex.Message + "<br/>" + Environment.NewLine + "StackTrace :" + ex.StackTrace +
              "" + Environment.NewLine + "Date :" + DateTime.Now.ToString() + "WarningException:" + ex.InnerException);
                   string New = Environment.NewLine + "-----------------------------------------------------------------------------" + Environment.NewLine;
                   File.AppendAllText(Server.MapPath("D:\\Oracle Logs\\Error.txt"), New);
                   // ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "alert", "alert(objex.Message);", true);

               }

               string filePath = Server.MapPath("D:\\Oracle Logs\\Error.txt");

               using (StreamWriter writer = new StreamWriter(filePath, true))
               {
                   writer.WriteLine("-----------------------------------------------------------------------------");
                   writer.WriteLine("Date : " + DateTime.Now.ToString());
                   writer.WriteLine();

                   while (ex != null)
                   {
                       writer.WriteLine(ex.GetType().FullName);
                       writer.WriteLine("Message : " + ex.Message);
                       writer.WriteLine("StackTrace : " + ex.StackTrace);

                       ex = ex.InnerException;
                   }
               }

Posted 1-Jul-19 20:45pm

Member 14143173

Updated 1-Jul-19 21:27pm

Add a Solution

Comments

Richard MacCutchan 2-Jul-19 3:09am

You cannot access physical paths in a web server as far as I am aware.

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

lmoelleb · Answer 1 · 2019-07-01T21:13:00

You have the path hardcoded multiple times, even though you have it in a variable called "dir" in the first line. The variable name and the comment specify it is a directory but it includes the file name. You then ask for a directory with the filename to be created.

Clean it up, then run it through the debugger to see the path used is as expected, and more importantly which line you end up with the wrong value. And read the documentation: HttpServerUtility.MapPath(String) Method (System.Web) | Microsoft Docs[^] - Why do you call MapPath when you already have the full file system path hard coded?

In case you consider using a debugger to be an advanced topic you will learn later, then change your priorities at once. Learning the basics of a debugger takes 10 minutes and that time is paid back within a day.

OriginalGriff · Answer 2 · 2019-07-01T21:28:00

You can't, except by using Server.MapPath as you have. As a website, you are normally not given any access to the "rest of the machine" to prevent you accidentally messing up other sites.
Server.MapPath converts a site-centric path like "~/documents/myDoc.docx" to a physical path on the server: "C:\sites\iis\Yourdomain\main\documents\myDoc.Docx", it won't "translate" a physical address line "D:\Oracle Logs\Error.txt" and give you access to the file.

In addition, you need to be aware that the database server may not even by on the same machine - it rarely is in production - so the folder you want is likely to be elsewhere on the network and probably isn't shared.

And of course, you can't access the client computer file system in any way, shape or form for security reasons.

And do yourself a favour; don't hardcode paths: always store them in config files so the code doesn't need to be changed when they do.

How to write a file using physical path

2 solutions

Solution 1

Solution 2

Add your solution here

Preview 0