当映射到字符串属性时，Csv Helper Fluent类映射会向int字段添加前导零

Question

I have a string property called TimeClockCode. Which is mapped to index(0) of the csv file. Index(0) contains integers such as 11565. But after mapping to string TimeClockCode,

Like this: Map(p => p.TimeclockCode).Index(0);

or like this: Map(p => p.TimeclockCode).ConvertUsing(row => row.GetField<string>(0));

both result in string 011565.

I solved this by reading it as an int and calling toString on it.

Map(p => p.TimeclockCode).ConvertUsing(row => row.GetField<int>(0).ToString()); Which gave me desired results of 11565.

Am I missing something about the implementation of fluent mappings? Where is the leading zero coming from?

Answer 1

I couldn't replicate your problem. I used this code:

static void Main(string[] args)
{
    var s = "\"11565\",\"a\",\"012\",\"4.5\",\"01\",\"555\"\r\n";
    using (var sr = new StringReader(s))
    {
        var csv = new CsvReader(sr);
        csv.Configuration.HasHeaderRecord = false;
        csv.Configuration.RegisterClassMap<MyClassMap>();
        while (csv.Read())
        {
            var record = csv.GetRecord<MyClass>();

        }
    }
}

public class MyClass
{
    public string Test { get; set; }
    public string TimeclockCode { get; set; }
}

public sealed class MyClassMap : CsvClassMap<MyClass>
{
    public MyClassMap()
    {
        Map(p => p.TimeclockCode).Index(0);
        Map(p => p.Test).Index(2);
    }
}

I can only assume that the value in the CSV is 011565 or that you have some other issue that is not evident from the text of the question.