如何将数据从多个 excel/csv 文件传输到 C# 中的字典

I could be barking up the wrong tree but with what you've given us to work with, I'm assuming you want to take the data matrix in the relevant worksheet and from that data, create an enumerable list of data with the relevant type so you can perform operations over it like sorting, filtering, etc. If that's what you want then the below is an example of that.

This is the workbook I created with some test data ...

You said you're a novice with C#, but, to make the below work, create a new .NET Framework project and add the NuGet package ... Microsoft.Office.Interop.Excel. I called the project InterExcelDotNet but you can change that to be whatever you want.

using Microsoft.Office.Interop.Excel;
using System.Collections.Generic;
using System.Linq;

namespace ExcelInteropDotNet
{
    public class CompanyStockInfo
    {
        public string StockSymbol { get; set; }
        public string CompanyName { get; set; }
        public string SPSector { get; set; }
    }

    class Program
    {
        static void Main(string[] args)
        {
            // Change the below variabes to the relevant values for your needs.
            string workbookName = @"c:\temp\Source Data.xlsx";
            string worksheetName = "CompanyStockData";

            // Create a new list with the type being the CompanyStockInfo type.
            var companyStockInfoList = new List<CompanyStockInfo>();

            // Create an instance of Excel, open the workbook, fetch the sheet and then
            // find the last row in column A.
            var xlApplication = new Application();
            var xlWorkbook = xlApplication.Workbooks.Open(workbookName, ReadOnly: true);
            var xlSrcSheet = xlWorkbook.Worksheets[worksheetName] as Worksheet;
            var lastRow = xlSrcSheet.Cells[xlSrcSheet.Rows.Count,1].End[XlDirection.xlUp].Row;

            // There may be a better way to do this but essentially, the below will loop through
            // all cells from the 2nd row to the last row and create a new item in the list
            // that stores all of the data.
            for (long row = 2; row <= lastRow; row++)
            {
                companyStockInfoList.Add(new CompanyStockInfo()
                {
                    StockSymbol = (xlSrcSheet.Cells[row, 1] as Range).Text,
                    CompanyName = (xlSrcSheet.Cells[row, 2] as Range).Text,
                    SPSector = (xlSrcSheet.Cells[row, 3] as Range).Text
                });
            }

            xlApplication.Quit();

            // You can use Linq to sort and search the list for the data you're wanting to
            // get your hands on.

            // Will filter all entries that have Inc. in the company name.
            var filteredList = companyStockInfoList.Where(item => item.CompanyName.Contains("Inc."));

            // Orders all entries by the company name in alphabetical order.
            var orderedList = companyStockInfoList.OrderBy(item => item.CompanyName);
        }
    }
}

现在，了解了以上内容后，您应该了解 C# 中的 Excel 库确实允许您像在 excel 中一样直接对工作簿执行操作，例如 SORT 和 FILTER。这可能是实现您想要的另一种方式。

种类

高级过滤器

我不确定所有这些是否有帮助，但我希望它有帮助。

祝你好运 ...！