            FileStream stream = File.Open(filePath, FileMode.Open, FileAccess.Read);

        // Reading from a binary Excel file ('97-2003 format; *.xls)
        //            IExcelDataReader excelReader = ExcelReaderFactory.CreateBinaryReader(stream);

        // Reading from a OpenXml Excel file (2007 format; *.xlsx)
        IExcelDataReader excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream);

        // DataSet - The result of each spreadsheet will be created in the result.Tables
        DataSet result = excelReader.AsDataSet();

        // Free resources (IExcelDataReader is IDisposable)
        excelReader.Close();

        var cdm = new ValueSetRepository();

        for (int i = 0; i < result.Tables.Count; i++)
        {
            // CHECK if tableNames filtering is specified
            if (tableNames != null)
            {
                // CHECK if a table matches the specified tablenames
                var tablename = result.Tables[i].TableName;
                if (!tableNames.Contains(tablename))
                {
                    continue;
                }
            }

            var lookup = new ValueSetLookup();
            lookup.CmsId = result.Tables[i].Rows[2][0].ToString();
            lookup.NqfNumber = result.Tables[i].Rows[2][1].ToString();
            lookup.Data = new List<ValueSetAttribute>();

            int row_no = 2;
            while (row_no < result.Tables[i].Rows.Count) // i is the index of table
            // (sheet name) which you want to convert to csv
            {
                var currRow = result.Tables[i].Rows[row_no];
                var valueSetAttribute = new ValueSetAttribute()
                {
                    Id = currRow[0].ToString(),
                    Number = currRow[1].ToString(),
                    tName = currRow[2].ToString(),
                    Code = currRow[7].ToString(),
                    Description = currRow[8].ToString(),
                };

                lookup.Data.Add(valueSetAttribute);
                row_no++;
            }

            cdm.AddRecord(lookup);

Answer 11

是的，存在多个开放源代码库，以帮助使用C＃读取和/或编写Excel电子表格。

以下是C＃库的简短列表：

维护了最新的策划列表here。

示例：使用ExcelMapper读取Excel文件

a。通过在NuGet Packet Manager中运行以下命令，使用NuGet进行安装：

Install-Package ExcelMapper

b。 ExcelMapper的示例C＃代码

    public void ReadExcelUsingExcelMapperExtension()
    {
        string filePath = @"C:\Temp\ListOfPeople.xlsx";
        var people = new ExcelMapper(filePath).Fetch<Person>().ToList();
    }

    public class Person
    {
      public string FirstName { get; set; }
      public string LastName { get; set; }
      public int Age { get; set; }
    }

免责声明：我喜欢ExcelMapper的简洁性，因此包含了此程序包的示例代码。要使用其他库执行相同的操作，需要更多代码。

读写Excel文件C＃

11 个答案: