string ExcelName ="xxx"
　　　　　　　string path = Application.StartupPath +"//"+ExcelName + ".xlsx";//获取表的地址
            if (!File.Exists(path))
            {
                MessageBox.Show(ExcelName+"表没有找到");
                return;
            }
            using (ExcelPackage Excel = new ExcelPackage(new FileStream(path, FileMode.Open)))//打开表
            {
                ExcelWorksheet sheet = ExcelBuff.Workbook.Worksheets[1];
                for (int startRow= sheet.Dimension.Start.Row, endRow = sheet.Dimension.End.Row; startRow <= endRow; startRow++)
                {
                    
                    
                }
　　　　　　　}