Configuration Value Converter for enum and List<T>

CommaDelimitedListConverter.cs

public class CommaDelimitedListConverter<T> : ConfigurationConverterBase
{
  public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
  {
    if (value == null)
    {
      throw new ArgumentNullException(nameof(value));
    }

    var segments = ((string)value).Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
    var result = segments.Select(p => (T)ChangeType(typeof(T), p.Trim())).ToList();
    return result;
  }

  private static object ChangeType(Type type, string value)
  {
    if (type == null)
    {
      throw new ArgumentNullException(nameof(type));
    }

    object result;
    if (type.IsEnum)
    {
      result = Enum.Parse(type, value, true);
      return result;
    }

    result = Convert.ChangeType(value, type);
    return result;
  }
}