blocks|key|1101419|text|var+sb+=+new+StringBuilder();
sb.Append(first);
sb.AppendLine();+//+which+is+equal+to+Append(Environment.NewLine);
sb.Append(second);
return+sb.ToString();|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1101420|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>var sb = new StringBuilder();
sb.Append(first);
sb.AppendLine(); // which is equal to Append(Environment.NewLine);
sb.Append(second);
return sb.ToString();
</code></pre>

blocks|key|886635|text|static+class+MyClass
{
+++public+const+string+NewLine="\n";
}

string+x+=+"first+line"+%2B+MyClass.NewLine+%2B+"second+line"|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|886636|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>static class MyClass
{
 public const string NewLine="\n";
}

string x = "first line" + MyClass.NewLine + "second line"
</code></pre>

blocks|key|1101584|text|如果你想要一个包含Environment.NewLine的常量字符串，你可以这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1101585|const+string+stringWithNewLine+=
@"first+line
second+line
third+line";|code-block|syntax|javascript|1101586|编辑|1101587|因为这是一个常量字符串，所以它是在编译时完成的，因此它是编译器对换行符的解释。我似乎找不到一个可以解释这种行为的参考资料，但我可以证明它是按预期工作的。我在Windows和Ubuntu+(使用Mono)上编译了这段代码，然后反汇编，结果如下：|1101588|​|1101589|📷|atomic|offset|length|1101590|1101591|1101592|如您所见，在Windows中，换行符被解释为\r\n，而在Ubuntu中，换行符被解释为\n|1101593|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/89385b1ab51aaaef029c3bf89589bf5a.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/ad338cd49c7a0b59b13ca9a998793369.png^0|0|0|0|0|0|0|1|0|0|0|1|1|0|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|17|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|18|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|19|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|1A|8|@]|9|@]|A|$]]|$1|M|3|N|5|O|7|1B|8|@]|9|@$P|1C|Q|1D|1|1E]]|A|$]]|$1|R|3|N|5|O|7|1F|8|@]|9|@$P|1G|Q|1H|1|1I]]|A|$]]|$1|S|3|L|5|6|7|1J|8|@]|9|@]|A|$]]|$1|T|3|U|5|6|7|1K|8|@]|9|@]|A|$]]|$1|V|3|-4|5|6|7|1L|8|@]|9|@]|A|$]]]|W|$X|$5|Y|Z|10|A|$11|12|13|-4]]|14|$5|Y|Z|10|A|$11|15|13|-4]]]]

If you want a const string that contains Environment.NewLine in it you can do something like this:

<pre><code>const string stringWithNewLine =
@"first line
second line
third line";
</code></pre>

<h2>EDIT</h2>

Since this is in a const string it is done in compile time therefore it is the compiler's interpretation of a newline. I can't seem to find a reference explaining this behavior but, I can prove it works as intended. I compiled this code on both Windows and Ubuntu (with Mono) then disassembled and these are the results:

<img src="https://i.stack.imgur.com/0id1Q.png" alt="Disassemble on Windows">
<img src="https://i.stack.imgur.com/rszCX.png" alt="Disassemble on Ubuntu">

As you can see, in Windows newlines are interpreted as \r\n and on Ubuntu as \n

blocks|key|886843|text|如果您确实希望将New+Line字符串作为常量，则可以这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|886844|public+readonly+string+myVar+=+Environment.NewLine;|code-block|syntax|javascript|886845|在C#中使用readonly关键字意味着这个变量只能被赋值一次。你可以在它的here上找到文档。它允许声明一个常量变量，这个常量变量的值直到执行时才知道。|offset|length|886846|entityMap|0|LINK|mutability|MUTABLE|url|https://msdn.microsoft.com/en-us/library/acdd6hb7.aspx^0|0|0|12|4|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]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

If you really want the New Line string as a constant, then you can do this:

<pre><code>public readonly string myVar = Environment.NewLine;
</code></pre>

The user of the readonly keyword in C# means that this variable can only be assigned to once. You can find the documentation on it <a href="https://msdn.microsoft.com/en-us/library/acdd6hb7.aspx" rel="nofollow">here</a>. It allows the declaration of a constant variable whose value isn't known until execution time.

blocks|key|886886|text|我更喜欢“巨蟒的方式”|type|unstyled|depth|inlineStyleRanges|entityRanges|data|886887|List<string>+lines+=+new+List<string>+{
++++"line1",
++++"line2",
++++String.Format("{0}+-+{1}+%7C+{2}",+
++++++++someVar,
++++++++othervar,+
++++++++thirdVar
++++)
};

if(foo)
++++lines.Add("line3");

return+String.Join(Environment.NewLine,+lines);|code-block|syntax|javascript|886888|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 like more the "pythonic way"

<pre><code>List&lt;string&gt; lines = new List&lt;string&gt; {
 "line1",
 "line2",
 String.Format("{0} - {1} | {2}", 
 someVar,
 othervar, 
 thirdVar
 )
};

if(foo)
 lines.Add("line3");

return String.Join(Environment.NewLine, lines);
</code></pre>

blocks|key|1101755|text|如果我理解这个问题:在textbox中耦合"\r\n"以获得下面的新行。我的例子起作用了-|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1101756|+++string+s1+=+comboBox1.Text;+++++//+s1+is+the+variable+assigned+to+box+1,+etc.
+++string+s2+=+comboBox2.Text;

+++string+both+=+s1+%2B+"\r\n"+%2B+s2;
+++textBox1.Text+=+both;|code-block|syntax|javascript|1101757|典型的答案可能是在text+box中使用定义的类型样式的s1+s2。|1101758|entityMap^0|B|7|L|6|0|0|9|8|S|2|V|2|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|N|$]]

If I understand the question: Couple <code>"\r\n"</code> to get that new line below in a <code>textbox</code>. My example worked -

<pre><code> string s1 = comboBox1.Text; // s1 is the variable assigned to box 1, etc.
 string s2 = comboBox2.Text;

 string both = s1 + "\r\n" + s2;
 textBox1.Text = both;
</code></pre>

A typical answer could be <code>s1</code>
 <code>s2</code> in the <code>text box</code> using defined type style.

blocks|key|886963|text|较新的.net版本允许您在文字前面使用$，这允许您在内部使用变量，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|886964|var+x+=+$"Line+1{Environment.NewLine}Line+2{Environment.NewLine}Line+3";|code-block|syntax|javascript|886965|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|$]]

newer .net versions allow you to use $ in front of the literal which allows you to use variables inside like follows:

<pre><code>var x = $"Line 1{Environment.NewLine}Line 2{Environment.NewLine}Line 3";
</code></pre>

blocks|key|1101795|text|如果您正在使用Web应用程序，您可以尝试这样做。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1101796|StringBuilder+sb+=+new+StringBuilder();
sb.AppendLine("Some+text+with+line+one");
sb.AppendLine("Some+mpre+text+with+line+two");
MyLabel.Text+=+sb.ToString().Replace(Environment.NewLine,+"<br+/>")|code-block|syntax|javascript|1101797|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|$]]

If you are working with Web application you can try this.

<pre><code>StringBuilder sb = new StringBuilder();
sb.AppendLine("Some text with line one");
sb.AppendLine("Some mpre text with line two");
MyLabel.Text = sb.ToString().Replace(Environment.NewLine, "&lt;br /&gt;")
</code></pre>

In .NET I can provide both <code>\r</code> or <code>\n</code> string literals, but there is a way to insert
something like "new line" special character like <code>Environment.NewLine</code> static property?

How to insert newline in string literal?

编译器

Windows

Ubuntu

在.NET中，我可以提供\r或\n字符串文字，但是有一种方法可以插入像“换行”这样的特殊字符，比如Environment.NewLine static property？

问如何在字符串文字中插入换行符？
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