How do I get an Excel range using row and column numbers in VSTO / C#?

Question

I think the question sums it up. Given two integers for row and column or four integers for row and column for the two corners of a range, how do I get a range object for th

Answer 1

Try this, works!

Excel.Worksheet sheet = xlWorkSheet;
Excel.Series series1 = seriesCollection.NewSeries();
Excel.Range rng = (Excel.Range)xlWorkSheet.Range[xlWorkSheet.Cells[3, 13], xlWorkSheet.Cells[pp, 13]].Cells;
series1.Values = rng;