How to keep file opened?

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foreach (string file in dirs)
{
   using(FileStream flStream = new FileStream(file, FileMode.Open, FileAccess.Write))
  {
      MessageBox.Show(file);
  }	
}

After msgbox.show the Stream closes. How to keep each file opened? Just, hard to imagine how..
thanks.

Posted 20-Apr-10 10:56am

halabella

Updated 20-Apr-10 10:58am

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v2

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4 solutions

Solution 2

Remove the using block and make sure you dispose of flStream yourself when you're done with it.

Posted 20-Apr-10 11:01am

DaveyM69

Solution 3

Why would you want to? If your finished with it then close the file and stop using the resources.

Because the FIleStream is wrapped in a using block of course it will close since after leaving the using scope Dispose will be called on the FileStream object which will in turn call close. If you want to keep it open, then don't use using. However, keep in mind you need to implement some mechanism to destroy resources when you are finished with them.

Posted 20-Apr-10 11:02am

Not Active

Solution 1

First, why would you want to keep each file open?

Second, you're only showing the file name...that doesn't need to be in the using statement

Third, the file closes because you exit the using statement. Put anything you want to do with the FileStream inside the using statement.

Posted 20-Apr-10 11:00am

William Winner

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Jordy "Kaiwa" Ruiter · Accepted Answer · 2010-04-20T11:04:00

Is there any specific reason why you'd want that?

I guess you could make an array like this:

C#

FileStream[] fileStreams = new FileStream[dirs.Length];

for (int i = 0; i < dirs.Length; i++)
{
    fileStreams[i] = new FileStream(dirs[i], FileMode.Open, FileAccess.Write);
}

Again I do not encourage this at all! If you do this just make sure to do another for loop once you're done to close all the FileStreams and dispose them!