I'm using CSVHelper to read in lots of data
I'm wondering if it's possible to read the last n
columns in and transpose them to a list
"Name","LastName","Attribute1","Attribute2","Attribute3"
And mould the data into something like this
public class Person
{
public string FirstName { get; set; }
public string LastName { get; set; }
public IList<string> Attributes { get; set; }
}
I'm looking to do this in one step, I'm sure I could have an intermediate step where I put into an object with matching attribute properties but it would be nice to do it on a one-er
This does the trick as a mapper.
public sealed class PersonMap : CsvClassMap<Person>
{
private List<string> attributeColumns =
new List<string> { "Attribute1", "Attribute2", "Attribute3" };
public override void CreateMap()
{
Map(m => m.FirstName).Name("FirstName").Index(0);
Map(m => m.LastName).Name("LastName").Index(1);
Map(m => m.Attributes).ConvertUsing(row =>
attributeColumns
.Select(column => row.GetField<string>(column))
.Where(value => String.IsNullOrWhiteSpace(value) == false)
);
}
}
Then you just need something like this
using (var reader = new CsvReader(new StreamReader(filePath)))
{
reader.Configuration.RegisterClassMap<PersonMap>();
while (reader.Read())
{
var card = reader.GetRecord<Person>();
}
}