CSV Helpers 引用一切

Question

我只想引用 csvhelper 中的字符串，但是这是引用每个字段，包括 header 记录。我知道不希望 header 记录包含在引用中是他们跳过它的一种方式，也只引用字符串。

 public static void writeCsvFile(List<SOPOrder> sopOrders, string filename)
 {
        using (var writer = new StreamWriter(filename))
        using (var csv = new CsvWriter(writer))
        {
            csv.Configuration.TrimOptions=CsvHelper.Configuration.TrimOptions.Trim;

            csv.Configuration.ShouldQuote = (field, context) => true;
            csv.WriteRecords(sopOrders);
        }
 }

Answer 1

在 CsvHelper 中没有一个只引用字符串字段的好方法。你可以通过不引用任何字段然后使用自定义 StringConverter 来引用字符串字段来破解它。

using (var csv = new CsvWriter(Console.Out))
{
    var records = new List<Foo>
    {
        new Foo { Id = 1, Name = "First, Record" },
        new Foo { Id = 2, Name = "Second \"Record" },
        new Foo { Id = 3, Name = "" },
        new Foo { Id = 4 }
    };

    csv.Configuration.ShouldQuote = (field, context) => false;
    csv.Configuration.TypeConverterCache.AddConverter<string>(new QuoteStringConverter());

    csv.WriteRecords(records);
}

public class Foo
{
    public int Id { get; set; }
    public string Name { get; set; }
}

public class QuoteStringConverter : StringConverter
{
    public override string ConvertToString(object value, IWriterRow row, MemberMapData memberMapData)
    {
        if (value == null)
            return "\"\"";

        return "\"" + ((string)value).Replace("\"", "\"\"") + "\"";
    }
}

CSV Helpers 引用一切

CSV Helpers quoting everything

c#

csvhelper