[英]String from byte array doesn't get trimmed in C#?
I have a byte array similar to this (16 bytes): 我有一个类似于此的字节数组(16字节):
71 77 65 72 74 79 00 00 00 00 00 00 00 00 00 00
I use this to convert it to a string and trim the ending spaces: 我用它来将它转换为字符串并修剪结束空格:
ASCIIEncoding.ASCII.GetString(data).Trim();
I get the string fine, however it still has all the ending spaces. 我得到的字符串很好,但它仍然有所有结束空格。 So I get something like "qwerty.........."
(where dots are spaces due to StackOverflow). 所以我得到类似"qwerty.........."
东西(其中点是StackOverflow的空格)。
What am I doing wrong? 我究竟做错了什么?
I also tried to use .TrimEnd() and to use an UTF8 encoding, but it doesn't change anything. 我也尝试使用.TrimEnd()并使用UTF8编码,但它不会改变任何东西。
Thanks in advance :) 提前致谢 :)
You have to do TrimEnd(new char[] { (char)0 });
你必须做TrimEnd(new char[] { (char)0 });
to fix this. 解决这个问题。 It's not spaces - it's actually null characters that are converted weirdly. 它不是空格 - 它实际上是奇怪转换的空字符。 I had this issue too. 我也有这个问题。
They're not really spaces: 他们不是真正的空间:
System.Text.Encoding.ASCII.GetString(byteArray).TrimEnd('\0')
...should do the trick. ......应该做的伎俩。
-Oisin -Oisin
Trim by default removes only whitespace , where whitespace is defined by char.IsWhitespace
. 默认情况下修剪仅删除空格 ,其中空格由char.IsWhitespace
定义。
'\\0'
is a control character, not whitespace. '\\0'
是控制字符,不是空格。
You can specify which characters to trim using the Trim(char[])
overload: 您可以使用Trim(char[])
重载指定要修剪的Trim(char[])
:
string result = Encoding.ASCII.GetString(data).Trim(new char[] { '\0' });
在powershell中,您可以这样做:
$yourString.TrimEnd(0x00)
Why try to create the string first and trim it second? 为什么要先尝试创建字符串然后再修剪它? This could add a lot of overhead (if the byte[] is large). 这可能会增加很多开销(如果byte []很大)。
You can specify index
and count
in the GetString(byte[] bytes, int index, int count)
overload. 您可以在GetString(byte[] bytes, int index, int count)
重载中指定index
和count
。
int count = data.Count(bt => bt != 0); // find the first null
string result = Encoding.ASCII.GetString(data, 0, count); // Get only the characters you want
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