Spire.Spreadsheet is a powerful component to view spreadsheet. As a standalone spreadsheet class library, Spire.Spreadsheet is a companion component to Spire.XLS, which mainly focus on how to display spreadsheet.
Thanks for your inquiry. Spire.Spreadsheet could set a style format to a cell, please right-click cells and find the option "Format cells". If I misunderstand your meaning, please describe your requirement in detail.