Way to copy DataTable rows to another DataTable?

Is the only way to copy data from one DataTable to another by extracting the item data one at a time from every row and copying to a new table? I was hoping there might be something buit in for indicating that I want to a row in a new table to equal the row/data in another table, but I couldn't find a way to do it. So if a new DataTable were to hold a subset copy for instance of some other table with maybe only minor changes, this would be a great time saver. Anyone have any ideas, or should I just copy the contents item for item?