Commented Unassigned: Example of excel file returning no datasets - OpenXmlReader [12455]

FileStream stream = File.Open(excelFilePath, FileMode.Open, FileAccess.Read);
excelReader = Excel.ExcelReaderFactory.CreateOpenXmlReader(stream);
DataSet result = excelReader.AsDataSet();

result is null for the attached file.
Comments: ** Comment from web user: bhavi **

I have same problem. can anyone have found solution ?