Entity Framework 6 How to Map a UserDefined datatype property as varchar type column in DB

Question

I have to map a Userdefined type Property as a Varchar Column Using EntityFramework 6. So I have an entity called EngineQuota :

'''

 [Table(EngineQuotas)]
    public partial class EngineQuota
    {
        public int Id { get; set; }
        
        public DecimalList Quotas { get; set; }

        public int? EngineId { get; set; }    

        private EngineQuotas()
        {
            this.Quotas = new DecimalList();
        }
    }

'''

The DecimalList is a seperate class which holds a sortedList of decimals '''

public class DecimalList : IEnumerable<decimal>
    {
        private readonly SortedSet<decimal> items;

        public DecimalList()
        {
            this.items = new SortedSet<decimal>();
        }

        public IEnumerator<decimal> GetEnumerator()
        {
            return this.items.GetEnumerator();
        }

        IEnumerator IEnumerable.GetEnumerator()
        {
            return this.GetEnumerator();
        }

       
    }
}

''' In DB I want a comma seperated value of items in DecimalList to be stored in a Column Quota in Table EngineQuotas. How is this possible in Entity Framework6 . Tried Using ComplexType but not able to get some result

Answer 1

Take a look at EF custom converters - this should solve it.
One thing - if you are converting collection, than it's possible, that You will need to provide custom comparer in this entity's configuration, because it is possible, that change tracker wont detect collection update.