How to load all files .dat from a folder

Hi all,
i've a problem, i've to write a code for load all file .dat from a folder browsed by the user, for to to be understood i say that: from every file .dat LoadWave/A/J/D/K=0/L={0,6,0,1,0}. The Set Data Folder is root:Images and every file .dat must named like this: wavename = "wave" + num2str(numFilesSelected-1).