I'm doing a project on Sales Management System.
I used a DataGridView for entry. Column under item is set to type ComboBox. I can fill item in database to ComboBox, but not able to fill remaining cell of the row in connection to the item selected in ComboBox. I need to fill the DataGridView dynamically based on item selected to Unit_Price field. Also need to add a row when enter Quantity. When I add a row first it comes to 0th position, next time under that( 2nd row ).
How can I do that?

Doing project using VB.NET