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@gaya_K

デリゲートをキャストする

Last updated at Posted at 2013-01-11

同じ引数、戻り値を持っていても以下のような代入はできません。

Program.cs
PropertyChangedEventHandler h1 = (_, __) => { };
EventHandler<PropertyChangedEventArgs> h2;

h2 = (EventHandler<PropertyChangedEventArgs>)h1;    // エラー

ugaya40 さんから正しいやり方を教えて頂きました。

Program.cs
PropertyChangedEventHandler h1 = (_, __) => { };
EventHandler<PropertyChangedEventArgs> h2;

h2 = new EventHandler<PropertyChangedEventArgs>(h1);    // OK
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