private void ExtractExcelData() { if (SelectedFileInfo != null) { _reader = new ExcelFileReader(SelectedFileInfo); if (_reader.IsFileExists()) { if (!_reader.IsFileOpen()) { List<string> subItems = _reader.GetListSubItems(); if (subItems != null) { if (subItems.Count >= 1) { List<IDictionary> data = _reader.GetData(subItems[0]).ToList(); if (data.Count() == 0) { _dataSource = ""; throw new Exception("No rows found in excel file ' " + SelectedFileInfo.Name + " '!"); } else _dataSource = data.ToDataSource(); } } } else { throw new Exception("Excel File ' " + SelectedFileInfo.Name + " ' is in use."); } } else { throw new Exception("Excel File ' " + SelectedFileInfo.Name + " ' not found."); } } else throw new Exception("Please select an excel file"); }