Solved

FileStream Exists Error Work Around?

Posted on 2006-10-25
1
313 Views
Last Modified: 2012-05-05
The "CreateNew" throws an error when identical files exist in the destination directory as it should.

Problem: I need some method to direct traffic (so to speak) like: IF (!FILE.EXISTS)

 
  System.IO.FileStream fs = null;

  byte[] byteArray = null;

  foreach (string file in arraylist1)
  {
      byteArray = (f);

      fs = new FileStream("C:\\" + file, FileMode.CreateNew, FileAccess.ReadWrite);  

          if (byteArray != null)
          {
               IF (!FILE.EXISTS)   // Write file otherwise skip to next array file
               {
                    fs.Write(byteArray, 0, byteArray.Length);
               }              

0
Comment
Question by:kvnsdr
1 Comment
 
LVL 11

Accepted Solution

by:
Expert1701 earned 250 total points
ID: 17807354
You can check if the file did not previously exist:

  if (File.Exists("C:\\" + file))
    using (FileStream fs = new FileStream("C:\\" + file, FileMode.CreateNew, FileAccess.ReadWrite))
      fs.Write(byteArray, 0, byteArray.Length);

Or check if the file could not be overwritten:

  try
  {
    using (FileStream fs = new FileStream("C:\\" + file, FileMode.CreateNew, FileAccess.ReadWrite))
      fs.Write(byteArray, 0, byteArray.Length);
  }
  catch (IOException)
  {
  }

Or a combination:

  if (File.Exists("C:\\" + file))
    try
    {
      using (FileStream fs = new FileStream("C:\\" + file, FileMode.CreateNew, FileAccess.ReadWrite))
        fs.Write(byteArray, 0, byteArray.Length);
    }
    catch (IOException)
    {
      // Report Error
    }
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction                                                 Was the var keyword really only brought out to shorten your syntax? Or have the VB language guys got their way in C#? What type of variable is it? All will be revealed.   Also called…
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
Along with being a a promotional video for my three-day Annielytics Dashboard Seminor, this Micro Tutorial is an intro to Google Analytics API data.
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now