CsvHelper mapping issue - csv

Question

I have a question related to CsvHelper library and I cannot figure out how to map a csv file to the following MyClass object.
the csv file look like:
id, Property1, property2....
1, x, a,b,c
2,x, d,f
3, y, g,h,i,j,k
...
Which I would like to parse to the following classes
public class MyClass
{
public string Id { get; set; }
public List<Custom> MyCustoms { get; set; }
}
public class Custom
{
public string Property1 { get; set; }
public List<string> Property2 { get; set; }
}

Answer 1

ConvertUsing is going to be the easiest way to map this.
public class Program
{
static void Main(string[] args)
{
using (var stream = new MemoryStream())
using (var writer = new StreamWriter(stream))
using (var reader = new StreamReader(stream))
using (var csv = new CsvReader(reader, CultureInfo.InvariantCulture))
{
writer.WriteLine("Id,Property1,Property2,Property3,Property4,Property5,Property6");
writer.WriteLine("1,x,a,b,c");
writer.WriteLine("2,x,d,f");
writer.WriteLine("3,y,g,h,i,j,k");
writer.Flush();
stream.Position = 0;
var test = csv.Configuration.RegisterClassMap<MyClassMap>();
var records = csv.GetRecords<MyClass>().ToList();
}
}
}
public class MyClassMap: ClassMap<MyClass>
{
public MyClassMap()
{
Map(m => m.Id);
Map(m => m.MyCustoms).ConvertUsing(row =>
{
var custom = new Custom
{
Property1 = row["Property1"],
Property2 = new List<string>()
};
var index = 2;
while (row.TryGetField(typeof(string), index, out var property))
{
custom.Property2.Add((string)property);
index++;
}
return new List<Custom> { custom };
});
}
}
public class MyClass
{
public string Id { get; set; }
public List<Custom> MyCustoms { get; set; }
}
public class Custom
{
public string Property1 { get; set; }
public List<string> Property2 { get; set; }
}