Yes, it is possible, but there is currently no VI in LabVIEW that helps you with that. You would need a loop that goes over all your folders and lists the files (see attachment or DevZone). Then, for each result file, you need to execute a VI that does pretty much the same as the "Read Channel Group" example, which is looping over the internal hierarchy of file->channelgroups->channels in the file and collecting the information you want in a table or database.