将byte []转换为signed int [英] Converting byte[] to signed int

问题描述

在将byte []转换为signed int时需要一些帮助。这就是我试图做的事情：


byte [] bytes = new byte [3] {0xFF，0xFF，0x9C};

StringBuilder hexString = new StringBuilder（）;

foreach（byte tmpByte in bytes）hexString.Append（tmpByte.ToString（" X2"））;

int intValue = int.Parse（hexString.ToString（），

NumberStyles.AllowHexSpecific）;


我得到一个正的intValue。但是，intValue应该是
为负值。任何帮助将不胜感激。


JT

Need some help in converting a byte[] to a signed int. This is what I
have attempted to do:

byte[] bytes = new byte[3] { 0xFF, 0xFF, 0x9C};
StringBuilder hexString = new StringBuilder();
foreach (byte tmpByte in bytes) hexString.Append(tmpByte.ToString("X2"));

int intValue = int.Parse(hexString.ToString(),
NumberStyles.AllowHexSpecific);

I am getting a positive intValue. However, the intValue is supposed to
be a negative value. Any help would be greatly appreciated.

JT

推荐答案

我看不出为什么你期待负面价值。

[BASE16] FFFF9C = [BASE10] 16777116

-

问候，

DennisJDMyrén

Oslo Kodebureau

" JT" < [e-mail]>在消息中写道

新闻：OF ************** @ TK2MSFTNGP09.phx.gbl ...

I cannot see why you are expecting a negative value.
[BASE16] FFFF9C = [BASE10] 16777116

--
Regards,
Dennis JD Myrén
Oslo Kodebureau
"JT" <[e-mail]> wrote in message
news:OF**************@TK2MSFTNGP09.phx.gbl...

在转换中需要一些帮助一个byte []到一个signed int。这就是我试图做的事情：

byte [] bytes = new byte [3] {0xFF，0xFF，0x9C};
StringBuilder hexString = new StringBuilder（） ; foreach（byte tmpByte，以字节为单位）hexString.Append（tmpByte.ToString（" X2"））;

int intValue = int.Parse（hexString.ToString（），
NumberStyles.AllowHexSpecific）;

我得到一个积极的intValue。但是，intValue应该是负值。任何帮助将不胜感激。

JT

Need some help in converting a byte[] to a signed int. This is what I
have attempted to do:

byte[] bytes = new byte[3] { 0xFF, 0xFF, 0x9C};
StringBuilder hexString = new StringBuilder();
foreach (byte tmpByte in bytes) hexString.Append(tmpByte.ToString("X2"));

int intValue = int.Parse(hexString.ToString(),
NumberStyles.AllowHexSpecific);

I am getting a positive intValue. However, the intValue is supposed to be
a negative value. Any help would be greatly appreciated.

JT

对不起，我应该更多地解释我的情况。我从连接到串行端口的设备获得了一些

字节。设备显示一个

负值，我得到的值为FFFF9C。

此外，API文档说明字节是Big-Endian。在

这种情况​​下，FFFF9C会转换为某个负整数值吗？


DennisMyrén写道：

Sorry, I should explained my situation abit more. I am getting some
bytes from a device connected to the serial port. The device displays a
negative value and the bytes I am getting for the value is FFFF9C.
Also, the API documentation says that the bytes are in Big-Endian. In
this case, would FFFF9C translate to some negative integer value?

Dennis Myrén wrote:

I无法理解为什么你期望负值。
[BASE16] FFFF9C = [BASE10] 16777116

I cannot see why you are expecting a negative value.
[BASE16] FFFF9C = [BASE10] 16777116

JT< [e-mail]> ;写道：

JT <[e-mail]> wrote:

在将byte []转换为signed int时需要一些帮助。这就是我试图做的事情：

byte [] bytes = new byte [3] {0xFF，0xFF，0x9C};
StringBuilder hexString = new StringBuilder（） ; foreach（byte tmpByte，以字节为单位）hexString.Append（tmpByte.ToString（" X2"））;

int intValue = int.Parse（hexString.ToString（），
NumberStyles.AllowHexSpecific）;

我得到一个积极的intValue。但是，intValue应该是负值。任何帮助将不胜感激。

Need some help in converting a byte[] to a signed int. This is what I
have attempted to do:

byte[] bytes = new byte[3] { 0xFF, 0xFF, 0x9C};
StringBuilder hexString = new StringBuilder();
foreach (byte tmpByte in bytes) hexString.Append(tmpByte.ToString("X2"));

int intValue = int.Parse(hexString.ToString(),
NumberStyles.AllowHexSpecific);

I am getting a positive intValue. However, the intValue is supposed to
be a negative value. Any help would be greatly appreciated.

24位签名int是非常罕见的 - 你真的是指它只有

3字节而不是4？


您可以使用BitConverter进行转换，而无需使用字符串

格式。如果这是错误的字节顺序，你可以使用我的

EndianBitConverter来自
http://www.pobox.com/~skeet/csharp/miscutil


-

Jon Skeet - < sk *** @ pobox.com>
http ：//www.pobox.com/~skeet

如果回复小组，请不要给我发邮件

A 24-bit signed int is quite rare - did you really mean it to only have
3 bytes rather than 4?

You can use BitConverter to do the conversion without using a string
format. If that''s the wrong endianness, you can use my
EndianBitConverter from
http://www.pobox.com/~skeet/csharp/miscutil

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

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