如何从另一个类中填充类属性？

Question

我有课，我收集了 FreeDressingItems、FreeToppingItems、FreeInstructionItems

就是这样，每个都填充 selectedCustomization 我在这个类中有另一个属性public string Items { get { return GetAllItems(); } }

我要填写它，以便它保留同一类别类型的所有类别名称，以便我可以轻松地将其绑定到网格并以逗号分隔的形式显示其所有值。

我有以下代码，有人可以帮我解决这个问题。

  public class selectedCustomization
    {
        public CategoryType TypeName { get; set; }
        public string CategoryName { get; set; }
        public string ItemName { get; set; }
        public int SourceID { get; set; }
        public string Items { get { return GetAllItems(); } }
        private string GetAllItems()
        {
            switch (TypeName)
            {
                    case CategoryType.Dressing:
                    {
                        cFreeCustomization cfreeCust = new cFreeCustomization();
                        break;
                     }


                case CategoryType.Topping:

                    break;

                case CategoryType.SpecialInstruction:

                    break;


            }

        }

    }

这是另一个类 cFreeCustomization

public List<selectedCustomization> SelectedItems
    {
        get
        {
            libDBDataContext cn = new libDBDataContext();
            List<selectedCustomization> lst = new List<selectedCustomization>();
            lst.AddRange(
                        (from xx in this.FreeDressingItems
                         select new selectedCustomization() { TypeName = CategoryType.Dressing, CategoryName = xx.DressingInfo.CatName, ItemName = xx.DressingInfo.Description }
                        ).ToList()
                        );
            lst.AddRange(
                        (from xx in this.FreeToppingItems
                         select new selectedCustomization() { TypeName = CategoryType.Topping, CategoryName = xx.ToppingInfo.CatName, ItemName = xx.ToppingInfo.Description }
                        ).ToList()
                        );
            lst.AddRange(
                        (from xx in this.FreeInstructionItems
                         select new selectedCustomization() { TypeName = CategoryType.SpecialInstruction, CategoryName = xx.InstructionInfo.CatName, ItemName = xx.InstructionInfo.Description }
                        ).ToList()
                        );
            return lst;
        }
    }

如何以逗号分隔的形式将 selectedCustomization 关联起来？

Answer 1

我认为GetAllItems的方法应该如下：

private string GetAllItems()
{
    cFreeCustomization cfreeCust = new cFreeCustomization();
    var ls = cfreeCust.SelectedItems.FindAll(I => I.TypeName == this.TypeName);
    return string.Join(",", ls.Select(I => I.CategoryName).ToArray());  
}

这将解决您的问题。