Enumfiles - Always get NULL returns

Feb 6, 2010 at 4:07 AM
Edited Feb 6, 2010 at 4:08 AM


I am using enumfiles to try and get files within a directory on the device.

My "_list" variable is always returning NULL

Here is my code

        private void SearchFiles(string searchPath)

		FileList _list = device.devrapi.EnumFiles(searchPath + "\\*.*");
		foreach(FileInformation file in _list) 
				if(file.FileAttributes  == 16)	     // Is a directory: recursive search...
					SearchFiles(searchPath + "\\" + file.FileName);	
				else if(file.FileAttributes  == 32)  // Is a file: add to a list...
					clbGames.Items.Add(searchPath + "\\" + file.FileName);
				else throw new ArgumentException
					("FileAttributes unknown: " + file.FileAttributes, "file.FileAttributes");
In the FOREACH line, the _list throws a NULLREFERENCEEXCEPTION Error - Object reference not set to an instance of an object.
Yes, the searchpath is valid and there are 3 files in the searchpath.
I should also mention the device is PRESENT and CONNECTED from code previous to calling this routine.
Any Ideas?
Feb 6, 2010 at 4:39 AM

Found the issue.

Throughout the program, I use the same searchpath for copying files to the device and copying files from the device (that I know the filename of) without any issues.

However, ENUMFILES is CASE SENSITIVE of the path, while the other routines are not.

I found that my searchpath (which like I said is used throughout the program successfully) had one character in lowercase, but looking on the device, it is uppercase.

I changed that ONE character to uppercase, and now the ENUMFILES returns the files.