blocks|key|3318964|text|下面的方法对我很有效。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3318965|sb.ToString().TrimEnd(+'\r',+'\n'+);|code-block|syntax|javascript|3318966|或|3318967|sb.ToString().TrimEnd(+Environment.NewLine.ToCharArray());|3318968|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

The following works for me.

<pre><code>sb.ToString().TrimEnd( '\r', '\n' );
</code></pre>

or

<pre><code>sb.ToString().TrimEnd( Environment.NewLine.ToCharArray());
</code></pre>

blocks|key|3106405|text|.Trim()为我删除了\r\n+(使用.NET+4.0)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3106406|entityMap^0|0|7|C|4|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

<code>.Trim()</code> removes <code>\r\n</code> for me (using .NET 4.0).

blocks|key|3106220|text|这样如何：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3106221|public+static+string+TrimNewLines(string+text)
{
++++while+(text.EndsWith(Environment.NewLine))
++++{
++++++++text+=+text.Substring(0,+text.Length+-+Environment.NewLine.Length);
++++}
++++return+text;
}|code-block|syntax|javascript|3106222|如果有多个换行符，效率会有点低，但它可以工作。|3106223|或者，如果您不介意修剪(比方说)+"\r\r\r\r"或"\n\n\n\n"而不仅仅是"\r\n\r\n\r\n"|offset|length|style|CODE|3106224|//+No+need+to+create+a+new+array+each+time
private+static+readonly+char[]+NewLineChars+=+Environment.NewLine.ToCharArray();

public+static+string+TrimNewLines(string+text)
{
++++return+text.TrimEnd(NewLineChars);
}|3106225|entityMap^0|0|0|0|H|A|S|A|17|E|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|V|8|@$K|W|L|X|M|N]|$K|Y|L|Z|M|N]|$K|10|L|11|M|N]]|9|@]|A|$]]|$1|O|3|P|5|D|7|12|8|@]|9|@]|A|$E|F]]|$1|Q|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|R|$]]

How about:

<pre><code>public static string TrimNewLines(string text)
{
 while (text.EndsWith(Environment.NewLine))
 {
 text = text.Substring(0, text.Length - Environment.NewLine.Length);
 }
 return text;
}
</code></pre>

It's somewhat inefficient if there are multiple newlines, but it'll work.

Alternatively, if you don't mind it trimming (say) <code>"\r\r\r\r"</code> or <code>"\n\n\n\n"</code> rather than just <code>"\r\n\r\n\r\n"</code>:

<pre><code>// No need to create a new array each time
private static readonly char[] NewLineChars = Environment.NewLine.ToCharArray();

public static string TrimNewLines(string text)
{
 return text.TrimEnd(NewLineChars);
}
</code></pre>

blocks|key|338230|text|使用框架。ReadLine()方法具有以下内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|338231|338232|将行定义为一系列字符，后跟换行符("\n")、回车("\r")或紧跟换行符("\r\n")的回车。返回的字符串不包含终止回车符或换行符。|blockquote|338233|338234|338235|因此，下面的代码将会起到作用|338236|_content+=+new+StringReader(sb.ToString()).ReadLine();|code-block|syntax|javascript|338237|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|R|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|S|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|T|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|V|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|W|8|@]|9|@]|A|$M|N]]|$1|O|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|P|$]]

Use the Framework. The ReadLine() method has the following to say:

<blockquote>
 A line is defined as a sequence of
 characters followed by a line feed
 ("\n"), a carriage return ("\r") or a
 carriage return immediately followed
 by a line feed ("\r\n"). The string
 that is returned does not contain the
 terminating carriage return or line
 feed.
</blockquote>

So the following will do the trick

<pre><code>_content = new StringReader(sb.ToString()).ReadLine();
</code></pre>

blocks|key|339178|text|关于|type|unstyled|depth|inlineStyleRanges|entityRanges|data|339179|_content+=+sb.ToString().Trim(Environment.NewLine.ToCharArray());|code-block|syntax|javascript|339180|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

What about

<pre><code>_content = sb.ToString().Trim(Environment.NewLine.ToCharArray());
</code></pre>

blocks|key|341656|text|_content+=+sb.TrimEnd(Environment.NewLine.ToCharArray());|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|341657|这当然会删除“\r\r”以及“\n\n”和其他组合。在NewLine不是"\n\r“的"enviroments”中，你可能会得到一些奇怪的行为:-)|unstyled|341658|但是如果你能接受这个，那么我相信这是删除字符串末尾换行符的最有效的方法。|341659|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code>_content = sb.TrimEnd(Environment.NewLine.ToCharArray());
</code></pre>

This will of course remove "\r\r\r\r" as well as "\n\n\n\n" and other combinations.
And in "enviroments" where NewLine is other than "\n\r" you might get some strange behaviors :-)

But if you can live with this then I belive this is the most effectiv way to remove new line characters at the end of a string.

blocks|key|3319069|text|不如这样吧：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3319070|string+text+=+sb.ToString().TrimEnd(null)|code-block|syntax|javascript|3319071|这将从字符串的末尾提取所有空格字符--只有当您想保留非换行符空格时才会出现问题。|3319072|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

How about just:

<pre><code>string text = sb.ToString().TrimEnd(null)
</code></pre>

That will pull all whitespace characters from the end of the string -- only a problem if you wanted to preserve non-newline whitespace.

blocks|key|341709|text|这在某种程度上是没有答案的，但从字符串中删除换行符的最简单方法是，首先不要让字符串上有换行符，方法是确保它永远不会被您自己的代码看到。也就是说，通过使用删除换行符的本机函数。如果逐行请求输出，许多流和文件/io方法将不包含换行符，尽管可能需要将某些内容包装在System.IO.BufferedStream中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|341710|像System.IO.File.ReadAllLines这样的东西在大多数情况下都可以用来代替System.IO.File.ReadAllText，一旦你使用了正确的流类型(例如BufferedStream)，就可以使用ReadLine来代替Read。|341711|entityMap^0|3L|O|0|1|R|1B|Q|2H|E|32|8|3D|4|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|I|$]]

Somewhat of a non-answer, but the easiest way to trim a newline off of a string is to not have the newline on the string in the first place, by making sure it is is never seen by your own code. That is, by using native functions which remove the newline. Many stream and file/io methods will not include the newline if you ask for output line by line, though it may be necessary to wrap something in a <code>System.IO.BufferedStream</code>.

Things like <code>System.IO.File.ReadAllLines</code> can be used in place of <code>System.IO.File.ReadAllText</code> most of the time, and <code>ReadLine</code> can be used instead of <code>Read</code> once you are working with the right type of stream (e.g. <code>BufferedStream</code>).

blocks|key|3319207|text|正如马库斯指出的那样，TrimEnd现在正在做这项工作。在Windows+Phone+7.8环境中，我需要从字符串的两端获取换行符和空格。在尝试了不同的更复杂的选项之后，我的问题只通过使用Trim()就解决了--很好地通过了以下测试|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3319208|+++[TestMethod]
++++[Description("TrimNewLines+tests")]
++++public+void+Test_TrimNewLines()
++++{
++++++++Test_TrimNewLines_runTest("\n\r+++++testi++++\n\r",+"testi");
++++++++Test_TrimNewLines_runTest("\r+++++testi++++\r",+"testi");
++++++++Test_TrimNewLines_runTest("\n+++++testi++++\n",+"testi");
++++++++Test_TrimNewLines_runTest("\r\r\r\r\n\r+++++testi+++\r\r\r\r+\n\r",+"testi");
++++++++Test_TrimNewLines_runTest("\n\r++\n\n\n\n+++testi+äål.,++++\n\r",+"testi+äål.,");
++++++++Test_TrimNewLines_runTest("\n\n\n\n+++++testi++ja+testi++\n\r\n\n\n\n",+"testi++ja+testi");
++++++++Test_TrimNewLines_runTest("",+"");
++++++++Test_TrimNewLines_runTest("\n\r\n\n\r\n",+"");
++++++++Test_TrimNewLines_runTest("\n\r+\n\n+\n\n",+"");
++++}

++++private+static+void+Test_TrimNewLines_runTest(string+_before,+string+_expected)
++++{
++++++++string+_response+=+_before.Trim();
++++++++Assert.IsTrue(_expected+==+_response,+"string+'"+%2B+_before+%2B+"'+was+translated+to+'"+%2B+_response+%2B+"'+-+should+have+been+'"+%2B+_expected+%2B+"'");
++++}|code-block|syntax|javascript|3319209|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

As Markus pointed out TrimEnd is doing the job now. I needed to get line feeds and white space from both ends of string in Windows Phone 7.8 environment. After having chased different more complex options my problem was solved by using Trim() only - passed the following tests nicely

<pre><code> [TestMethod]
 [Description("TrimNewLines tests")]
 public void Test_TrimNewLines()
 {
 Test_TrimNewLines_runTest("\n\r testi \n\r", "testi");
 Test_TrimNewLines_runTest("\r testi \r", "testi");
 Test_TrimNewLines_runTest("\n testi \n", "testi");
 Test_TrimNewLines_runTest("\r\r\r\r\n\r testi \r\r\r\r \n\r", "testi");
 Test_TrimNewLines_runTest("\n\r \n\n\n\n testi äål., \n\r", "testi äål.,");
 Test_TrimNewLines_runTest("\n\n\n\n testi ja testi \n\r\n\n\n\n", "testi ja testi");
 Test_TrimNewLines_runTest("", "");
 Test_TrimNewLines_runTest("\n\r\n\n\r\n", "");
 Test_TrimNewLines_runTest("\n\r \n\n \n\n", "");
 }

 private static void Test_TrimNewLines_runTest(string _before, string _expected)
 {
 string _response = _before.Trim();
 Assert.IsTrue(_expected == _response, "string '" + _before + "' was translated to '" + _response + "' - should have been '" + _expected + "'");
 }
</code></pre>

blocks|key|341718|text|我不得不去掉整篇文章中的新行。所以我使用了：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|341719|++++++++++++while+(text.Contains(Environment.NewLine))
++++++++++++{
++++++++++++++++text+=+text.Substring(0,+text.Length+-+Environment.NewLine.Length);
++++++++++++}|code-block|syntax|javascript|341720|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I had to remove the new lines all over the text. So I used:

<pre><code> while (text.Contains(Environment.NewLine))
 {
 text = text.Substring(0, text.Length - Environment.NewLine.Length);
 }
</code></pre>

I want to make sure that _content does not end with a NewLine character:

<pre><code>_content = sb.ToString().Trim(new char[] { Environment.NewLine });
</code></pre>

but the above code doesn't work since Trim seems to not have an overloaded parameter for a collection of strings, only characters.

What is the simplest one-liner to remove an Enivronment.Newline from the end of a string?

What is the easiest way in C# to trim a newline off of a string?

Windows

我希望确保_content不会以NewLine字符结尾：_content = sb.ToString().Trim(new char[] { Environment.NewLine });但是上述代码的不能用于，因为Trim似乎没有字符串集合的重载参数，只有字符。从字符串末尾删除Enivronment.Newline的最简单的一行程序是什么？

问在C#中裁剪字符串换行符的最简单方法是什么？
EN

回答 10

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问在C#中裁剪字符串换行符的最简单方法是什么？EN

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