How can a border be set around multiple cells in excel using C#

Question

I am working on a project that creates excel files.

I am having trouble placing a border on multiple cells to organize the excel file.

Let\'s say I want a b

Answer 1

I did this without impacting the performance. I am taking a simple excel to format :

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