c# - タイプ 'System.EventHandler' を 'System.EventHandler' に暗黙的に変換することはできません

Question

I have read already a few threads about this, but I still don't know how to solve it in my case. I come from Java and mostly new to C#

I want to attach listener when animation finishes:

myStoryBoard.Completed += new EventHandler(onMyStoryBoardCompleted);

And:

private void onMyStoryBoardCompleted(object sender, EventArgs e)
{       
}

And I get the error in the title. I tried:

 myStoryBoard.Completed += new EventHandler<object>(onMyStoryBoardCompleted);

But then I get:

no overload for 'onMyStoryBoardCompleted' matches delegate 'System.EventHandler<object>'

So it seems that the signature is not compatible with EventHandler<object> and I couldn't find how to make it compatible, I also don't know if this approach is correct.

I read

Understanding events and event handlers in C#

C# Dynamic template implicit conversion error from System.EventHandler to System.EventHandler<TEventArgs>

defining event handler for Tick event of DispatcherTimer in windows 8 app

But still don't find the solution for this case.

Thanks in advance.

score 10 · Accepted Answer

試す：

private void onMyStoryBoardCompleted(object sender, object e)
{ }

そして、ジェネリックを使用してサブスクライブしますEventHandler<object>:

myStoryBoard.Completed += new EventHandler<object>(onMyStoryBoardCompleted);

もちろん、これは、イベントハンドラーの 2 番目の引数をインスタンスEventArgs(またはその派生クラス) にする必要があるという .NET Framework の規則に反します。Windows 8 Metro など、署名付きのイベントをTimeline定義するクラスを持つ別のフレームワークで実行していると想定しています。CompletedEventHandler<object>

c# - タイプ 'System.EventHandler' を 'System.EventHandler' に暗黙的に変換することはできません

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