c# - EPPlus 和 Linq To Excel 查询所有行

Question

使用 EPPlus 和 Linq To Excel 有人知道如何获取所有行的语法吗？

IQueryable<Row> excelSheetValues = from workingSheet in excelFile.Worksheet(sheetName) select workingSheet;

这不是检索 ant 数据。如何使用 Linq-to-Excel 获取 EPPlus 的所有行

Answer 1

这个 GitHub示例可能会对您有所帮助。

Excel 包提供了很多辅助方法..

using (ExcelPackage package = new ExcelPackage(existingFile))

您可以遍历工作簿并进行查询，例如，

(from cell in sheet.Cells[sheet.Dimension.Address] where cell.Style.Font.Bold select cell);

链接中的示例代码。

public static void RunLinqSample(DirectoryInfo outputDir)
    {
        Console.WriteLine("Now open sample 7 again and perform some Linq queries...");
        Console.WriteLine();

        FileInfo existingFile = new FileInfo(outputDir.FullName + @"\sample7.xlsx");
        using (ExcelPackage package = new ExcelPackage(existingFile))
        {
            ExcelWorksheet sheet = package.Workbook.Worksheets[1];

            //Select all cells in column d between 9990 and 10000
            var query1= (from cell in sheet.Cells["d:d"] where cell.Value is double && (double)cell.Value >= 9990 && (double)cell.Value <= 10000 select cell);

            Console.WriteLine("Print all cells with value between 9990 and 10000 in column D ...");
            Console.WriteLine();

            int count = 0;
            foreach (var cell in query1)
            {
                Console.WriteLine("Cell {0} has value {1:N0}", cell.Address, cell.Value);
                count++;
            }

            Console.WriteLine("{0} cells found ...",count);
            Console.WriteLine();

            //Select all bold cells
            Console.WriteLine("Now get all bold cells from the entire sheet...");
            var query2 = (from cell in sheet.Cells[sheet.Dimension.Address] where cell.Style.Font.Bold select cell);
            //If you have a clue where the data is, specify a smaller range in the cells indexer to get better performance (for example "1:1,65536:65536" here)
            count = 0;
            foreach (var cell in query2)
            {
                if (!string.IsNullOrEmpty(cell.Formula))
                {
                    Console.WriteLine("Cell {0} is bold and has a formula of {1:N0}", cell.Address, cell.Formula);
                }
                else
                {
                    Console.WriteLine("Cell {0} is bold and has a value of {1:N0}", cell.Address, cell.Value);
                }
                count++;
            }

            //Here we use more than one column in the where clause. We start by searching column D, then use the Offset method to check the value of column C.
            var query3 = (from cell in sheet.Cells["d:d"]
                          where cell.Value is double && 
                                (double)cell.Value >= 9500 && (double)cell.Value <= 10000 && 
                                cell.Offset(0, -1).GetValue<DateTime>().Year == DateTime.Today.Year+1 
                          select cell);

            Console.WriteLine();
            Console.WriteLine("Print all cells with a value between 9500 and 10000 in column D and the year of Column C is {0} ...", DateTime.Today.Year + 1);
            Console.WriteLine();    

            count = 0;
            foreach (var cell in query3)    //The cells returned here will all be in column D, since that is the address in the indexer. Use the Offset method to print any other cells from the same row.
            {
                Console.WriteLine("Cell {0} has value {1:N0} Date is {2:d}", cell.Address, cell.Value, cell.Offset(0, -1).GetValue<DateTime>());
                count++;
            }
        }
    }