WPF 动态生成对象属性 （dynamic）

原文:WPF 动态生成对象属性 （dynamic）

项目中列行的数据 都需要动态生成 所以考虑到对象绑定  可需要一个动态生成属性的意思

缺点 加载速度会慢 很明显的慢

解决办法 尽量减轻动态属性的量~

参考文章

https://www.cnblogs.com/maomiyouai/p/3594132.html

https://www.cnblogs.com/dingli/archive/2012/06/14/2548687.html（这个没看明白 但是冥冥中让我觉得 收藏一下以后可能会用）

代码

属性类   想研究明白的 看参考文章

 public class NurseScheduleStatisticsModel : DynamicObject





    {





 





 





        Dictionary<string, object> Properties = new Dictionary<string, object>();





 





        public override bool TrySetMember(SetMemberBinder binder, object value)





        {





            if (!Properties.Keys.Contains(binder.Name))





            {





            





                Properties.Add(binder.Name, value.ToString());





            }





            return true;





        }





        public override bool TryGetMember(GetMemberBinder binder, out object result)





        {





            return Properties.TryGetValue(binder.Name, out result);





        }





    }

生成临时数据

       private ObservableCollection<NurseScheduleStatisticsModel> GetNameDataLlist()





        {





     





            dynamic model = new NurseScheduleStatisticsModel();





            model.Name = "市川 賞子";





            model.Class_ = "B";





            model.JOb = "リーダー";





            model.Num = "1";





            model.Num1 = "r1";





            model.Num2 = "R1";





            model.Num3 = "r1";





            model.Num4 = "r1";





            model.Num5 = "T1";





            dynamic model2 = new NurseScheduleStatisticsModel();





            model2.Name = "石田";





            model2.Class_ = "B";





            model2.JOb = "リーダー";





            model2.Num = "2";





            model2.Num1 = "r2";





            model2.Num2 = "R2";





            model2.Num3 = "r3";





            model2.Num4 = "r2";





            model2.Num5 = "T2";





            dynamic model3 = new NurseScheduleStatisticsModel();





            model3.Name = "安达 鮎美";





            model3.Num = "3";





            model3.Class_ = "B";





            model3.JOb = "リーダー";





            model3.Num1 = "r2";





            model3.Num2 = "R3";





            model3.Num3 = "r2";





            model3.Num4 = "r3";





            model3.Num5 = "T3";





        





            modelList.Add(model);





            modelList.Add(model2);





            modelList.Add(model3);





      





 





 





            return modelList;





 





        }

动态增加列和绑定datagrid

dl.Binding = new Binding("Num" + (i + 1) );

这里的bing 绑定的就是对象里的Num1~开始的对象

      for (int i = 0; i < 10; i++)





			{ 





                 DataGridTextColumn dl = new DataGridTextColumn();





                dl.Header='num'+i;





              





                dl.Binding = new Binding("Num" + (i + 1) );





                dataGrid.Columns.Add(dl);





			}





dataGrid.ItemsSource = GetNameDataLlist();

我在项目里 使用一个自定义对象 来包含 dynamic 动态对象 减少不必要的开销

对象

    public class NameList : INotifyPropertyChanged





    {





        public event PropertyChangedEventHandler PropertyChanged;





 





        public NameList(string name, string jOb, string class_, int num, NurseScheduleStatisticsModel model) { Name = name; Class_ = class_; JOb = jOb; Num = num; Ml = model; }





      





  





        private string name;





 





        public string Name





        {





            get { return name; }





            set





            {





                name = value;





                if (PropertyChanged != null)





                {





                    PropertyChanged(this, new PropertyChangedEventArgs("Name"));





                }





 





            }





        }





        private int num;





 





        public int Num





        {





            get { return num; }





            set





            {





                num = value;





                if (PropertyChanged != null)





                {





                    PropertyChanged(this, new PropertyChangedEventArgs("Num"));





                }





            }





        }





        private string class_;





 





        public string Class_





        {





            get { return class_; }





            set





            {





                class_ = value;





                if (PropertyChanged != null)





                {





                    PropertyChanged(this, new PropertyChangedEventArgs("Class_"));





                }





            }





        }





 





 





 





        private string jOb;





 





        public string JOb





        {





            get { return jOb; }





            set





            {





                jOb = value;





                if (PropertyChanged != null)





                {





                    PropertyChanged(this, new PropertyChangedEventArgs("JOb"));





                }





            }





        }





 





        private NurseScheduleStatisticsModel ml;





 





        public NurseScheduleStatisticsModel Ml





        {





            get { return ml; }





            set { ml = value;





            if (PropertyChanged != null)





            {





                PropertyChanged(this, new PropertyChangedEventArgs("Ml"));





            }





            }





        }





 





  





 





    }

模拟数据

  private ObservableCollection<NameList> GetNameDataLlist2()





        {





 





            dynamic model = new NurseScheduleStatisticsModel();





 





            model.Num1 = "r1";





            model.Num2 = "R1";





            model.Num3 = "r1";





            model.Num4 = "r1";





            model.Num5 = "T1";





            dynamic model2 = new NurseScheduleStatisticsModel();





 





            model2.Num1 = "r2";





            model2.Num2 = "R2";





            model2.Num3 = "r3";





            model2.Num4 = "r2";





            model2.Num5 = "T2";





            dynamic model3 = new NurseScheduleStatisticsModel();





 





            model3.Num1 = "r2";





            model3.Num2 = "R3";





            model3.Num3 = "r2";





            model3.Num4 = "r3";





            model3.Num5 = "T3";





 





            //modelList.Add(model);





            //modelList.Add(model2);





            //modelList.Add(model3);





 





            listName.Add(new NameList("市川 賞子", "リーダー", "B", 1, model));





            listName.Add(new NameList("石田", "リーダー", "C", 2, model2));





            listName.Add(new NameList("安达 鮎美", "リーダー", "C", 3, model3));





 





            return listName;





 





        }

绑定动态列

需要在套一层Ml对象来引用

    for (int i = 0; i < LS.Count; i++)





			{ 





                 DataGridTextColumn dl = new DataGridTextColumn();





                dl.Header=LS[i];





              





                dl.Binding = new Binding("Ml.Num" + (i + 1) );





                dataGrid.Columns.Add(dl);





			}

就是慢 的有这点数据量就要4秒~6秒 loading加载提示肯定是要有了

希望有人有更好 更成熟的方法