We have a spreadsheet with over 15,000 rows and we get an error: "Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index" - this happens in the last line below:
Workbook workbookSource = new Workbook();
//Calling Open method of Workbook object to open an Excel file using its file path
workbookSource.Open(FilePath, FileFormatType.Default, password);
Any help would be greatly appreciated.