CsvHelper更新，派生DefaultTypeConverter

Question

最近，我将CsvHelper从v2更新为v15，但以下代码不再起作用：

public class DateConverter : DefaultTypeConverter
    {
        public override string ConvertToString(TypeConverterOptions options, object value)
        {
            return ((DateTime)value).ToString("dd'/'MM'/'yyyy");
        }
    }

错误是：no suitable method found to override，但来自程序集的DefaultTypeConverter是：

public class DefaultTypeConverter : ITypeConverter
{
    public DefaultTypeConverter();

    //
    // Summary:
    //     Converts the string to an object.
    //
    // Parameters:
    //   text:
    //     The string to convert to an object.
    //
    //   row:
    //     The CsvHelper.IReaderRow for the current record.
    //
    //   memberMapData:
    //     The CsvHelper.Configuration.MemberMapData for the member being created.
    //
    // Returns:
    //     The object created from the string.
    public virtual object ConvertFromString(string text, IReaderRow row, MemberMapData memberMapData);
    //
    // Summary:
    //     Converts the object to a string.
    //
    // Parameters:
    //   value:
    //     The object to convert to a string.
    //
    //   row:
    //     The CsvHelper.IWriterRow for the current record.
    //
    //   memberMapData:
    //     The CsvHelper.Configuration.MemberMapData for the member being written.
    //
    // Returns:
    //     The string representation of the object.
    public virtual string ConvertToString(object value, IWriterRow row, MemberMapData memberMapData);
}

我该如何克服这个问题呢？

Answer 1

重写的签名与要扩展的类中方法的签名不匹配。这在不同版本的csvhelper中有所不同

您需要用以下代码替换当前的实现：

public override string ConvertToString(object value, IWriterRow row, MemberMapData memberMapData)
{
    return ((DateTime)value).ToString("dd'/'MM'/'yyyy");
}

有关更多更改，请查看CsV Helper on GitHub