Reference>IXLSWorksheet>RCRange

Returns a Range object that represents a cell or a range of cells.

Syntax

property RCRange[Row1, Col1, Row2, Col2: integer]: IXLSRange;

Row1	Integer. A number that indicates the first row of the range, starting with 1 for the first row in the Worksheet.
Col1	Integer. A number that indicates the first column of the range, starting with 1 for the first column in the Worksheet.
Row2	Integer. A number that indicates the last row of the range, starting with 1 for the first row in the Worksheet.
Col2	Integer. A number that indicates the last column of the range, starting with 1 for the first column in the Worksheet.

This example sets the font style in cells A1:D10 on the first sheet to bold.

Workbook.Sheets[1].RCRange[1, 1, 10, 4].Font.Bold := True;