Message in Chinese (Simplified) (中文(简体))
        AsyncCodeActivity.BeginExecute 返回的 IAsyncResult 不得为 Null。
Unlocalized message
        AsyncCodeActivity.BeginExecute must not return a null IAsyncResult.
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AsyncCodeActivity.BeginExecute 返回的 IAsyncResult 不得为 Null。

AsyncCodeActivity.BeginExecute must not return a null IAsyncResult.
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