1.詞匯

• delegate type 委托類型
• delegate instance 委托實例
• derive from 繼承自

2.例句

• A delegate type is effectively a list of parameter types and a return type. It specifies what kind of action can be represented by instances of the type.For instance, consider a delegate type declared like this:

  委托類型由參數(shù)列表和返回類型構(gòu)成。它指定了委托實例可以執(zhí)行什么樣的操作。比如，一個委托類型的聲明的格式如下:

delegate void StringProcessor(string input);

• The code says that if you want to create an instance of StringProcessor, you’ll need a method with one parameter (a string) and a void return type.

  這段代碼是說，如果你要創(chuàng)建一個StringProcessor的實例，你提供的方法中要包含一個字符串參數(shù)和返回的類型為void.

• It’s important to understand that StringProcessor really is a type, deriving from System.MulticastDelegate, which in turn derives from System.Delegate. It has methods, you can create instances of it and pass around references to instances, the whole works.

  StringProcessor是一個類型，這一點非常重要，其繼承自System.MulticastDelegate,而System.MulticastDelegate又繼承自System.Deleagate. 它有方法，你可以創(chuàng)建實例的時候傳遞引用給實例，這一切都沒有問題。