字符串到字节数组的转换 [英] String to Byte Array Conversion

问题描述

如何将字符串(代表十进制值)转换为字节数组?


假设用户输入1000，程序将生成{E8，03，00，00}

1000000将给出{40，42，0F，00}



是否有执行此功能的功能?我记得我以前见过类似的东西，但我不记得在哪里.也许我在做白日梦.

无论如何，谢谢预先感谢您的评论和帮助...

How do you convert from a string (that represents a decimal value) to a byte array?


Let says the users enter 1000 the program would produce {E8, 03, 00, 00}

And 1000000 will give {40, 42, 0F, 00}



Is there a function that does this? I remember that I saw something like this before but I can not remember where. Maybe I was day dreaming.

Anyway, thanks In advance thanks for the comments and help...

推荐答案

这是两个不同的目标:1)序列化一般情况的字符串；可以使用System.Text.Encoding完成，结果取决于所使用的编码；如果编码表示Unicode UTF之一，则所有结果将有所不同，但等效，并且未能使用UTF可能会导致数据丢失(请考虑"???"字符)； 2)序列化由字符串表示的数字.

在第二种情况下，它与string无关.您应该使用数据，而不是代表数据的字符串.这些字符串只能用于在UI，人类可读文件等中呈现数据.

无论如何，您可以使用它们的Parse或TryParse方法将字符串解析为任何数字类型.例如:
http://msdn.microsoft.com/en-us/library/system.uint32. parse.aspx [ ^ ]，
http://msdn.microsoft.com/en-us/library/system.uint32. tryparse.aspx [ ^ ].

(请参阅您可能需要的其他数字类型.)

然后，您可以将数值序列化为字节数组，然后再返回.请参阅课程System.BitConverter:
http://msdn.microsoft.com/en-us/library/system.bitconverter.aspx [^ ].

-SA

Those are two different goals: 1) serialize a general-case string; which can be done using System.Text.Encoding, and the result depends on the encoding used; if the encoding represents one of Unicode UTFs, all results will be different but equivalent, and the failure to use UTF can lead to data loss (think ''????'' characters); 2) serialization of a number represented by a string.

In the second case, it has nothing to do with string. You should work with data, not with the strings representing data. The strings can be used only for presentation of data in UI, human-readable files and the like.

Anyway, you can parse a string to any numeric type using their Parse or TryParse methods. For example:
http://msdn.microsoft.com/en-us/library/system.uint32.parse.aspx[^],
http://msdn.microsoft.com/en-us/library/system.uint32.tryparse.aspx[^].

(Please see other numeric types you might need.)

And then, you can serialize numeric value to array of bytes — and back. Please see the class System.BitConverter:
http://msdn.microsoft.com/en-us/library/system.bitconverter.aspx[^].

—SA

您是否可以使用 ^ ]

Could you use Conversion.Hex Method [^]

您是否正在考虑旧的

Are you thinking of the old Hex()[^] function?

这篇关于字符串到字节数组的转换的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！