Import Excel (xlsm) data to DataSet using C# in ASP.Net

How to import xlsm data to Dataset

I am using below

SpreadsheetGear.IWorkbook workbook = SpreadsheetGear.Factory.GetWorkbookSet().Workbooks.OpenFromStream(oFile.InputStream);
var dataSet = workbook.GetDataSet(SpreadsheetGear.Data.GetDataFlags.FormattedText);

I am facing some input stream issue corrupted xml file