取得或设定配置给这个资料流的位元组数目。

Gets or sets the number of bytes allocated for this stream.

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序列化为将物件转换成位元组资料流的程序，以便将物件保存到记忆体、资料库或档案。

Serialization is the process of converting an object into a stream of bytes in order to persist it to memory, a database, or a file.

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如果写入作业成功，资料流的目前位置以写入的位元组数目前移。

If the write operation is successful, the current position of the stream is advanced by the number of bytes written.

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