修改数据表部分字段方法封装-及-动态生成对象并动态添加属性

代码：

        //这样写的话，输入的是表的行对象，返回的是数据字典，可以直接用到更新操作里，public static Object AlterDate(Object tabledataobj){List<string> namelist = new List<string>();List<Object> valuelist = new List<object>();Type t = tabledataobj.GetType();foreach (PropertyInfo pi in t.GetProperties()){if (pi.Name == "id"){ }else{Object value = pi.GetValue(tabledataobj);if (value != null){namelist.Add(pi.Name);valuelist.Add(value);}}}Dictionary<string, object> temp = new Dictionary<string, object>();for (int i = 0; i < namelist.Count; i++){temp.Add(namelist[i], valuelist[i]);}temp.Add("updateTime", DateTime.Now);return temp;}//用到更新操作里，参考如下：var dic = new Dictionary<string, string>();dic.Add("name", "第十三条");dic.Add("areaId", "1");db.Update<School, int>(dic, 13);或：Object obj = AlterTable.AlterDate(dt);……var result = db.Update<t_customer,int>(obj,cusid);//方法重载，只有第二个参数里包含的字段才能进行修改public static Object AlterDate(Object tabledataobj,List<string> modifiableField){List<string> namelist = new List<string>();List<Object> valuelist = new List<object>();Type t = tabledataobj.GetType();foreach (PropertyInfo pi in t.GetProperties()){if (pi.Name == "id"){ }else{if (modifiableField.Contains(pi.Name)){Object value = pi.GetValue(tabledataobj);if (value != null){namelist.Add(pi.Name);valuelist.Add(value);}}}}Dictionary<string, object> temp = new Dictionary<string, object>();for (int i = 0; i < namelist.Count; i++){temp.Add(namelist[i], valuelist[i]);}temp.Add("updateTime", DateTime.Now);return temp;}//这样写的话，后面表示的是动态的的生成对象，并且动态的给对象添加属性public static Object AlterDate(Object tabledataobj){List<string> namelist = new List<string>();List<Object> valuelist = new List<object>();Type t = tabledataobj.GetType();foreach (PropertyInfo pi in t.GetProperties()){if (pi.Name == "id"){ }else{Object value = pi.GetValue(tabledataobj);if (value != null){namelist.Add(pi.Name);valuelist.Add(value);}}}Dictionary<string, object> temp = new Dictionary<string, object>();for (int i = 0; i < namelist.Count; i++){temp.Add(namelist[i], valuelist[i]);}temp.Add("updateTime", DateTime.Now);dynamic result = new System.Dynamic.ExpandoObject();foreach (KeyValuePair<string, object> item in temp){((IDictionary<string, object>)result).Add(item.Key, item.Value);}return result;}

// 另一种方式
ExpandoObject 类，“需引用System.Dynamic命名空间” 

            dynamic person = new ExpandoObject();

            person.Name = "cary";

            person.Age = 25;

            person.ShowDescription = new Func<string>(() => person.Name + person.Age);

 

            Console.WriteLine(person.Name+person.Age+person.ShowDescription());           

            Console.ReadLine();