The DevExpress ASP.NET Spreadsheet (ASPxSpreadsheet) can load a wide variety of formatted Excel documents. The spreadsheet documents used in this demo section are based on popular Microsoft Excel templates that you can download from Microsoft’s Templates for Excel page.
In this demo, the ASPxSpreadsheet programmatically opens an XLSX document representing an expense report. Change the values in the amount columns, and notice how the totals are recalculated automatically.