FileInfo[] Array - How the heck do I add to it?

[thomasbihn]

I have a pretty urgent application, but want to try and do it in C# instead of VB6. I need to search subfolders of a selected folder. Inside these subfolders, I want to return the files that have the pattern "*_LOG_*.txt". I keep running into an issue though. I try to declare an array of FileInfo[] type, but the declaration insists I use a constructor that doesn't take 0 arguements. I got around this by placing in a dummy text string "foo.txt". When I attempt to add to the array using the following statement, I get an error:

currentSubDir.GetFiles("*_LOG_*txt").CopyTo(return Array, returnArray.Count());

I thought that if I specify the count, it would add to the end of the array. Can someone help me get unstuck?

The error I get is Destination array was not long enough. Check destIndex and length, and the array's lower bounds.

[RustyDoorknobs]

@thomasbihn
I think you are supposed to use Lists instead of Arrays, google it.

[Curtis Rutland]

List<FileInfo> fileList = currentSubDir.GetFiles("*_LOG_*txt").ToList();

Alternatively:

FileInfo[] fileArray = currentSubDir.GetFiles("*_LOG_*txt");

I just prefer using Lists to arrays because they're easier to work with (adding and removing, that kind of thing).

[Curtis Rutland]

Also:

I try to declare an array of FileInfo[] type, but the declaration insists I use a constructor that doesn't take 0 arguements.

How are you declaring your array? The proper way to declare an array is:

FileInfo[] fileArray = new FileInfo[5];

Replace 5 with the proper size.

[thomasbihn]

Thanks for all the tips. I could've done this app in just a few minutes in VB6, but am an absolute idiot as I try to make the paradigm shift to C#. The problem is that in manufacturing, there is little luxury of time to find a suitable app to slowly develop in C#, so I've decided even when the requirement is urgent, I'm going to try to struggle through doing it in C# :)

[Curtis Rutland]

No prob. Trust me, it's worth learning. C# is an elegant language compared to any kind of VB, but especially VB6. It's easier if you've had some Java background, but once you get used to it, you'll love it.