I have a dataset with about 300 different shapefiles. I want to Merge all the shapefiles into one, but I need to keep the shapefile name. I have added a field to each of these shapefiles, but can't figure out how to populate the table with the name of the shapefile. I tried to download the Arc Toolbox "AddFieldName", but it didn't work. I also tried some of the Python codes and they also didn't work.