Excel Interop - Draw All Borders in a Range

Question

I see from Microsoft\'s documentation that I can access the particular border edges of a cell using the \'xlBordersIndex\' property and for example set the border style for

Answer 1

Finally, I got it. I did this without impacting the performance too. I am taking a simple excel to explain here :

Before

I managed to store the range as A1:C4 in a variable dynamically in exRange and used the below code to give border

((Range)excelSheet.get_Range(exRange)).Cells.Borders.LineStyle = XlLineStyle.xlContinuous;

After