如何在串行端口通信中读取Null [英] How to read Null in Serialport Communication

问题描述

全部，
在我的VB应用程序中，我需要读取空值....
因为null之后，我得到了数据...但是由于null之后，我的数据已经终止了...现在我应该如何读取包括null的数据.......

在ADV中感谢

Hai All,
In my VB Application i need to read null value....
Because after of null i get data ..... But because of null my data has been terminated ... Now how should i read data including null.......

Thanks in ADV

推荐答案

null就是字节值0，无非.因此，在读取后扫描缓冲区并查找0.空.

当然，除非您要处理Unicode字符串，否则在这种情况下，它是连续两个0值.

A null is nothing but a byte value of 0. So, scan your buffer after the read and look for a 0. There''s your null.

Unless, of course, youre dealing with Unicode strings, in which case, it''s two 0 values in a row.

请参阅我对问题的评论.使用该端口，您可以传输字节，仅此而已.它应该使答案显而易见...

—SA

Please see my comment to the question. With the port, you transmit bytes, nothing else. It should make the answer apparent…

—SA

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