cannot access the text file at same time by many user

Question

0.00/5 (No votes)

See more:

i have create a text file and add page name, ip address, page referrer using c#.I use this way to get how many user visit my webpage. my code is below:

C#

public void createTextFile()
  {
      string path = @"D:\testFile.txt";
      // This text is added only once to the file.
      if (!File.Exists(path))
      {
          // Create a file to write to.
          string textSt = ipaddress+pagename;
          using (StreamWriter sw = File.CreateText(path))
          {
              sw.WriteLine(textSt );

          }
      }
      else
      {
          using (StreamWriter sw = File.AppendText(path))
          {
              sw.WriteLine(textSt );

          }

      }
  }

i call this above function in every page in page_load() function.it is working.but when many user hit the same page in same time, in that time this problem is shown "The process cannot access the file". how can i solve this problem

Posted 18-May-15 0:01am

Member 9361273

Add a Solution

Comments

Sinisa Hajnal 18-May-15 6:16am

Simple. Don't use file. Write the entry into the database.

1 solution

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)

Frankie-C · Answer 1 · 2015-05-18T00:40:00

There are 2 solutions.
The first is to use File.Open with FileMode set to append (the file must exist), and FileShare set to ReadWrite.
The second is to interlock the file access with a critical section (lock) to avoid concurrent access:

C#

System.Object lockThis = new System.Object();

public void createTextFile()
{
  lock (lockThis)
  {
      string path = @"D:\testFile.txt";
      // This text is added only once to the file.
      if (!File.Exists(path))
      {
          // Create a file to write to.
          string textSt = ipaddress+pagename;
          using (StreamWriter sw = File.CreateText(path))
          {
              sw.WriteLine(textSt );
 
          }
      }
      else
      {
          using (StreamWriter sw = File.AppendText(path))
          {
              sw.WriteLine(textSt );
 
          }
 
      }
  }
}