C#获取EXCEL表格中的有效行数和列数
读写Excel.Application app = new Excel.Application();object omissing = System.Reflection.Missing.Value;Excel.Workbook workbook = app.Workbooks.Open(excleItem.FullName, omissing, omissing, omissing, omissing, omissing, omissing, omissing, omissing, omissing, omissing, omissing, omissing, omissing, omis