Task IHandle <AfterReadState> .Handle(AfterReadState message)
{
// 如果为 null 需要初始化状态
if (State == null)
{
AttachedObject.SetLocalValue(StateProperty, (T)Activator.CreateInstance(typeof(T), InitializeStateMark.Default));
}
AfterReadState?.Invoke(this, EventArgs.Empty);
return(Task.CompletedTask);
}
async Task IHandle <AfterReadState> .Handle(AfterReadState message)
{
// 如果为 null 需要初始化状态
if (State == null)
{
AttachedObject.SetLocalValue(StateProperty, (T)Activator.CreateInstance(typeof(T), InitializeStateMark.Default));
if (SetDefaultState != null)
{
await SetDefaultState.InvokeSerial(this, EventArgs.Empty);
}
}
AfterReadState?.Invoke(this, EventArgs.Empty);
}