loop though folder in the order of filename

Is there a way in ssis using for each loop container to loop through all the files in the order of file names.

for example if I have

1.txt

2.txt

3.txt

4.txt

I want to process 1.txt then 2.txt and so on instead of processing 1. txt then 4.txt and then 3.txt and so on. Any help much appreciated.