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同一種類型的兩個物件賦值，用反射。避免了一直點屬性操作的麻煩.

下面是幫助類程式碼:

 public class ObjectAssign
    {

        /// <summary>
        /// 物件賦值
        /// </summary>
        /// <typeparam name="T"><peparam>
        /// <param name="left">被賦值物件(等號左邊的)</param>
        /// <param name="right">賦值物件(等號右邊的)</param>
        /// <param name="id">不修改的欄位,eg:Test.Assignment<tb_goods_class>(tt, t, new string[]{"id","productName"});</param>
        public static void Assign<T>(T left, T right,string []attrs=null)
        {
            Type type = left.GetType();
            List<PropertyInfo> pList = type.GetProperties().ToList();
            for (int i = 0; i < pList.Count; i++)
            {
                //根據屬性名獲得指定的屬性物件
                PropertyInfo gc = type.GetProperty(pList[i].Name);
                //設定屬性的值
                if (attrs != null&&attrs.Length>0)
                {
                    string attrName = pList[i].Name.ToLower();
                    if (!attrs.Contains(attrName))
                    {
                        gc.SetValue(left, pList[i].GetValue(right, null), null);
                    }
                }
                else
                {
                    gc.SetValue(left, pList[i].GetValue(right, null), null);
                }

            }
        }
    }
 

下面是使用方式,大家可以打個斷點看看結果:

        private void btnStart_Click(object sender, EventArgs e)
        {
            Entity.Entities ee = new Entity.Entities();
            tb_goods_class tt = ee.tb_goods_class.OrderByDescending(r => r.id).Take(1).FirstOrDefault();
            tb_goods_class t = new tb_goods_class();
            t.anotherName = DateTime.Now.ToString();
            t.keywords = DateTime.Now.ToString();
            t.id = 1;
            //"id", "keywords" 不需要被賦值
            ObjectAssign.Assign<tb_goods_class>(tt, t, new string[] { "id", "keywords" });
            //任何欄位都要被賦值
            ObjectAssign.Assign<tb_goods_class>(tt, t, new string[] { });
            ObjectAssign.Assign<tb_goods_class>(tt, t, null);
            ObjectAssign.Assign<tb_goods_class>(tt, t);
        }