c# - 在 C# 中使用 CSVHelper 更改 CSV 文件中标题的名称

Question

我正在使用 CSV Helper 库为用户生成 CSV 文件
填充并上传到系统中。我的问题是 WriteHeader 方法只写入名称类似于“PropertyValue”的类的属性，这对用户不友好。有没有一种方法可以使生成的文本对用户友好，但仍然能够成功地将类映射到文件数据？

我的代码如下所示:

public ActionResult UploadPropertyCSV(HttpPostedFileBase file)
    {
        List<PropertyModel> properties = new List<PropertyModel>();
        RIMEDb dbContext = new RIMEDb();
        bool success = false;
        foreach (string requestFiles in Request.Files)
        {
            if (file != null && file.ContentLength > 0 && file.FileName.EndsWith(".csv")) 
            {
                using(StreamReader str = new StreamReader(file.InputStream))
                {
                    using(CsvHelper.CsvReader theReader = new CsvHelper.CsvReader(str))
                    {
                        while (theReader.Read())
                        {
                            RIMUtil.PropertyUploadCSVRowHelper row = new RIMUtil.PropertyUploadCSVRowHelper()
                            {
                                UnitNumber = theReader.GetField(0),
                                StreetNumber = theReader.GetField(1),
                                StreetName = theReader.GetField(2),
                                AlternateAddress = theReader.GetField(3),
                                City = theReader.GetField(4)
                            };

                            Property property = new Property();
                            property.UnitNumber = row.UnitNumber;
                            property.StreetNumber = row.StreetNumber;
                            property.StreetName = row.StreetName;
                            property.AlternateAddress = row.AlternateAddress;
                            property.City = dbContext.PostalCodes.Where(p => p.PostalCode1 == row.PostalCode).FirstOrDefault().City;

                            dbContext.Properties.Add(property);
                            try
                            {
                                dbContext.SaveChanges();
                                success = true;
                            }
                            catch(System.Data.Entity.Validation.DbEntityValidationException ex)
                            {
                                success = false;
                                RIMUtil.LogError("Ptoblem validating fields in database. Please check your CSV file for errors.");
                            }
                            catch(Exception e)
                            {
                                RIMUtil.LogError("Error saving property to database. Please check your CSV file for errors.");
                            }
                        }
                    }
                }
            }
        }
        return Json(success);
    }

我想知道是否有一些元数据标签或者我可以在我的 PropertyUploadCSVRowHelper 类中的每个属性之上放置一些我想要在文件中生成的文本

提前致谢

Answer 1

不确定这是否在 2 年前存在，但现在，我们可以使用以下属性函数更改属性/列名称:

[CsvHelper.Configuration.Attributes.Name("Column/Field Name")] 

完整代码:

using CsvHelper;
using System.Collections.Generic;
using System.IO;

namespace Test
{
    class Program
    {
        class CsvColumns
        {
            private string column_01;

            [CsvHelper.Configuration.Attributes.Name("Column 01")] // changes header/column name Column_01 to Column 01
            public string Column_01 { get => column_01; set => column_01 = value; }
        }

        static void Main(string[] args)
        {
            List<CsvColumns> csvOutput = new List<CsvColumns>();
            CsvColumns rows = new CsvColumns();
            rows.Column_01 = "data1";
            csvOutput.Add(rows);

            string filename = "test.csv";
            using (StreamWriter writer = File.CreateText(filename))
            {
                CsvWriter csv = new CsvWriter(writer);
                csv.WriteRecords(csvOutput);
            }
        }
    }
}