oh no doubt but the wait to load 4 million rows is what you’re probably trying to avoid 
Yes 
I am trying Einhugur’s Datagrid now. Thanks
The upside to it and putting the rows in a db is you CAN fill a db from a thread 
The trick will then be if someone decides to move the scroller all the way to the ned and that data is not loaded into the db yet.
4 millions rows is pretty unbrowsable by average humans
So a db may be a good thin in that you can apply some queries to get ranges etc