C#.NET: Read CSV using % converter

Question

I'm reading a CSV file

Name,Score
Pat,99%
Chris,87%

and would like to discard the percent sign when the file is read through FileHelpers

using FileHelpers;

public class PctConverter : ConverterBase
{
    private NumberFormatInfo nfi = new NumberFormatInfo();

    public PctConverter()
    {
        nfi.PercentSymbol = "%";
    }

    public override object StringToField(string from)
    {
        return decimal.Parse(from, NumberStyles.Percent, nfi);
    }
}

[DelimitedRecord(",")]
[IgnoreFirst]
public class Student
{
    public string Name { get; set; }
    public decimal Score { get; set; }
}

var student_file = "students.csv";
var engine = new FileHelperEngine<Student>();
engine.ErrorManager.ErrorMode = ErrorMode.SaveAndContinue;
List<Student> students = engine.ReadFileAsList(student_file);
ErrorInfo[] readingErrors = engine.ErrorManager.Errors;

But my converter is not quite right. Can you suggest why?

Answer 1

You need to specify the converter on the field you want converted, also your converter didn't work for me so I simplified it a bit:

public class PctConverter : ConverterBase
{
    public override object StringToField(string from)
    {
        return decimal.Parse(from.Replace("%", ""));
    }
}

[DelimitedRecord(",")]
[IgnoreFirst]
public class Student
{
    public string Name { get; set; }

    [FieldConverter(typeof(PctConverter))]
    public decimal Score { get; set; }
}