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