Message in Chinese (Traditional) (中文（繁體）)

就伺服器端的非同步方法呼叫而言，您的 Begin 方法必須傳回有效的 IAsyncResult。您的 Begin 方法不能傳回 Null。

Unlocalized message

For server-side asynchronous method calls, your Begin method must return a valid IAsyncResult. Your Begin method cannot return null.

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