I have a need from my users. They want to show thousands of data loaded when choose a category in a list box and browse row by scrolling.
I can do that by create a grid with a client side paged data source and a scrollable virtual grid.
But now, my user want to load an other catgery and concat the new rows to existing rows and keep scrolling position.
How can I do that ? I tried to add data in datasource, but scroll don't work any more (ranges are in invalid state). What is the best solution for do that ?
There is my actual code: