Add Rows/Columns to a Grid dynamically

Add Rows/Columns to a Grid dynamically

I have a child userControl comprising of multiple textboxes, labels. I
need to populate these controls in Parent User control which has a Grid.
Number of child user controls that need to be populated in the parent user
control are determined at run time and can change. Basically the number
depends on the search result. So it can be from 0 to n. How can I populate
my child user control in parent control?
Is there a better alternate to using a GRID? Any help will be much
appreciated. Thanks