>Hi All,
>
>I have a method that returns a string if there is no file in a directory. I have stepped through this and watched this line get set to an empty string but when it comes back to the calling line of code, it is null. I am missing something and wonder if it is the way I did the while statement. Any ideas appreciated.
>Thanks for the help
>Tim
>
>When the return from PopQueue is set to "" then in my while statement the value of fileName is null. Why would this be?
>

>while ((fileName = this.PopQueue(path, filter)) != "" && llSuccess)
>{
>    // Do all my stuff here, process each file returned until no more files are returned.
>}
>

This line while ((fileName = this.PopQueue(path, filter)) != "" && llSuccess)
is a bit strange.

I would try to create a separate variable

string fileName;

fileName = this.PopQueue(path, filter);

while (fileName !="" && llSuccess)
(
   fileName = ..;
  do stuff
}
<pre>
>
<pre>
>private string PopQueue(string path, string filter)
>{
>    try
>    {
>        DirectoryInfo directory = new DirectoryInfo(path);
>        FileInfo[] files = directory.GetFiles(filter);
>        this.FilesInQueue = files.Length;
>
>        foreach (FileInfo file in files)
>        {
>            // Verify this file isn't in the deleteList already
>            if (deleteFileList.Contains(file.Name) == false)
>            {
>                return file.Name;
>            }
>            else
>            {
>                this.DeleteDataFile(path, file.Name);
>            }
>        }
>    }
>    catch (DirectoryNotFoundException)
>    {
>        // Need to try to recover the directory & or re-create it.
>    }
>    catch (Exception ex)
>    {
>        EventLogger.LogException(ex);
>    }
>    // When the directory is empty, return an empty string.		
>    return "";
>}
>