我试图用来ImpromptuInterface
解决我在这里遇到的问题。将接口实现添加到 ExpandoObject。
我现在可以在我的基类中访问我的接口的各种属性,但我不能再订阅 ExpandoObject 的 PropertyChanged 事件。
在进行故障排除时,我能够简化问题,如图所示。
服务.cs
using ImpromptuInterface;
public Service()
{
InitializeComponent();
dynamic expando = new ExpandoObject();
try
{
INotifyPropertyChanged obj = Impromptu.ActLike(expando);
obj.PropertyChanged += obj_PropertyChanged;
}
catch (Exception ex)
{
EventLog.WriteEntry(ex.ToString(), EventLogEntryType.Error);
}
try
{
INotifyPropertyChanged obj = Impromptu.ActLike<INotifyPropertyChanged>(expando);
obj.PropertyChanged += obj_PropertyChanged;
}
catch (Exception ex)
{
EventLog.WriteEntry(ex.ToString(), EventLogEntryType.Error);
}
}
private void obj_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
throw new NotImplementedException();
}
我收到一条错误消息,指出
“System.Dynamic.ExpandoObject”不包含“PropertyChanged”的定义
每次我尝试在构造函数中连接事件处理程序时都会发生这种情况。
事件日志 1
Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: 'System.Dynamic.ExpandoObject' does not contain a definition for 'PropertyChanged'
at CallSite.Target(Closure , CallSite , Object )
at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0)
at ActLike_INotifyPropertyChanged_dc51b6c65bf147d0b5f35218102e3c11.add_PropertyChanged(PropertyChangedEventHandler value)
at Service..ctor()
事件日志 2
Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: 'System.Dynamic.ExpandoObject' does not contain a definition for 'PropertyChanged'
at CallSite.Target(Closure , CallSite , Object )
at ActLike_INotifyPropertyChanged_dc51b6c65bf147d0b5f35218102e3c11.add_PropertyChanged(PropertyChangedEventHandler value)
at Service..ctor()
我不能用ImpromptuInterface
这种方式吗?