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