C# 类动态添加属性、方法

时间:2023-12-20 12:09:44

问题:

  需要动态为WPF中的DataGrid添加列,并动态绑定相应数据.(此处仅实现动态属性的添加和使用,关于动态方法的添加和使用详见推荐阅读)

实现关键点:

  目标类继承DynamicObject,添加动态属性集合,并重写方法TrySetMember()和TryGetMember()

public void BtnQuery()
{
var view = this.GetView() as MainScreenView;
if (view != null)
{
view.dgdNurseScheduleStatistics.Columns.Clear();
var scheduleClassList = Connectors.NurseScheduleStatisticsConnector.GetInstance.FindScheduleClassList().OrderBy(item => item.Id); if (scheduleClassList != null)
{
List<NurseScheduleStatisticsModel> modelList = new List<NurseScheduleStatisticsModel>(); for (int i = ; i < ; i++)
{
dynamic model = new NurseScheduleStatisticsModel();
model.col0 = i;
model.col1 = i;
model.col2 = i;
model.col3 = i;
model.col4 = i;
modelList.Add(model);
} for (int i = ; i < ; i++)
{
DataGridTextColumn column = new DataGridTextColumn();
column.Header = "col" + i;
column.Binding = new Binding("col" + i); view.dgdNurseScheduleStatistics.Columns.Add(column);
}
view.dgdNurseScheduleStatistics.ItemsSource = modelList;
}
}
}
public class NurseScheduleStatisticsModel : DynamicObject
{
public string EmpName { get; set; }
public string TotalHour { get; set; }
public string TotalWork { get; set; } Dictionary<string, object> Properties = new Dictionary<string, object>(); public override bool TrySetMember(SetMemberBinder binder, object value)
{
if (!Properties.Keys.Contains(binder.Name))
{
         //在此可以做一些小动作

          //if (binder.Name == "Col")
          //  Properties.Add(binder.Name + (Properties.Count), value.ToString());
          //else
          //  Properties.Add(binder.Name, value.ToString());

                Properties.Add(binder.Name, value.ToString());
}
return true;
}
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
return Properties.TryGetValue(binder.Name, out result);
}
}

效果图:
C# 类动态添加属性、方法

推荐阅读http://www.cnblogs.com/serviceboy/archive/2010/04/16/1713688.html

http://msdn.microsoft.com/zh-cn/library/system.dynamic.dynamicobject.trysetmember(v=vs.110).aspx

原文地址http://www.cnblogs.com/maomiyouai/p/3594132.html