[DataMember]
public List<Detail_Item_List> detail_item_list { get; set; }
[DataContract]
public class Detail_Item_List
{
/// <summary>
/// 项目编码
/// </summary>
[DataMember]
public string item_code { get; set; }
/// <summary>
/// 项目名称
/// </summary>
[DataMember]
public string item_name { get; set; }
/// <summary>
/// 金额
/// </summary>
[DataMember]
public double item_amount { get; set; }
/// <summary>
/// 数量
/// </summary>
[DataMember]
public decimal num { get; set; }
/// <summary>
/// 收费标准
/// </summary>
[DataMember]
public string stdtype { get; set; }
/// <summary>
/// 计量单位
/// </summary>
[DataMember]
public string unit { get; set; }
}怎么让上面的属性的通过数组的值添加到detail_item_list这个属性值里面