Interactive create/drag/drop covered cells

Can you program the grid to allow a user to interactively select various sized covers, then drag/drop over grid to cover an arbitrary range of cells?

I am not sure what you mean by drag and drop covered cells. The \Syncfusion\Essential Studio\3.2.1.0\Windows\Grid.Windows\Samples\Quick Start\GridPad\ sample has a menu item that allows you to drag a selection of cells and then use the menu item to cover them. To do that, you just add a menu item (maybe with a hot key), and then in the menu handler do something like:

private void menuItem3_Click(object sender, System.EventArgs e)
{
	if(!this.gridDataBoundGrid1.Selections.Ranges.ActiveRange.IsEmpty)
	{
		this.gridDataBoundGrid1.Model.CoveredRanges.Add(this.gridDataBoundGrid1.Selections.Ranges.ActiveRange);
	}
}

I wanted to be able to drag and drop pre-defined range size covers. I''ll check out this example. Thank you.