我正在尝试使用ImpromptuInterface
来解决我在这里遇到的问题。 Adding Interface Implementation to ExpandoObject。'ExpandoObject'不包含'PropertyChanged'的定义
我现在能够访问我的基类中的接口的各种属性,但我不能再订阅ExpandoObject的PropertyChanged事件。
在排除故障时,我能够简化问题,如图所示。
Service.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();
}
我收到一个错误,指出
'System.Dynamic.ExpandoObject' 不包含一个定义 '的PropertyChanged'
每次尝试在构造函数中挂接事件处理函数时都会发生。
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()
不允许我使用ImpromptuInterface
这种方式?
从我玩过的几分钟内,它看起来像一个'ImpromptuInterface'的bug。我会[报告错误](https://github.com/ekonbenefits/impromptu-interface/issues) –