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SuheylZ avatar SuheylZ commented on July 29, 2024

I have found a similar problem with mapper but in a bit different context, I have the following class declaration:


    public class MyEditModel
    {
        public int Id { get; set; }
        public string Title { get; set; }
        public string Notes { get; set; }

        public DropDownList<int> Authorized1 { get; set; } = new DropDownList<int>();
        public DropDownList<int> Authorized2 { get; set; } = new DropDownList<int>();
    }

and here is the DropDownList class:
` public class DropDownList: DropDownListBase
where SelectionType : IComparable
{
SelectionType _selection;

    public SelectionType Selection
    {
        get => _selection;
        set
        {
            _selection = value;
            if (Items.Any())
            {
                foreach (var item in Items)
                {
                    if (item.Value == _selection.ToString())
                        item.Selected = true;
                    else
                        item.Selected = false;
                }
            }
        }
    }

    public DropDownList()
    {
       Selection = default(SelectionType);
    }
    public DropDownList(List<SelectListItem> list):this()
    {
        Items = list;
    }
    public DropDownList(List<SelectListItem> list, SelectionType item):this(list)
    {
        Selection = item;
    }

    public static DropDownList<SelectionType> Create<T>(IEnumerable<T> list, Expression<Func<T, string>> textExpr, Expression<Func<T, SelectionType>> valueExpr, SelectionType selected) where T:class
    {
        var items = BuildSelectItemList(list, textExpr, valueExpr);
        return new DropDownList<SelectionType>(items, selected);
    }
    public static DropDownList<SelectionType> Create<T>(IEnumerable<T> list, Expression<Func<T, string>> textExpr, Expression<Func<T, SelectionType>> valueExpr) where T:class
    {
        var items = BuildSelectItemList(list, textExpr, valueExpr);
        return new DropDownList<SelectionType>(items);
    }
   
}`

I define the mapping in the following way

p.Register<MyEditModel, Entity>()
.Member(t=>t.Authorized1.Selection, s=>s.Person1Id)
.Member(t=>t.Authorized2.Selection, s=>s.Person2Id);

Only the Selection property last set has the value. Any Selection properties set earlier loose their values.

from expressmapper.

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