C# 转义字符串中的双引号

Escape double quotes in string

提问by Mudassir Hasan

Double quotes can be escaped like this:

双引号可以这样转义：

string test = @"He said to me, ""Hello World"". How are you?";

But this involves adding character "to the string. Is there a C# function or other method to escape double quotes so that no changing in string is required?

但这涉及向"字符串添加字符。是否有 C# 函数或其他方法来转义双引号，以便不需要更改字符串？

采纳答案by Oded

No.

不。

Either use verbatim string literals as you have, or escape the "using backslash.

要么使用逐字字符串文字，要么"使用反斜杠转义。

string test = "He said to me, \"Hello World\" . How are you?";

The string has not changed in either case - there is a single escaped"in it. This is just a way to tell C# that the character is part of the string and not a string terminator.

在任何一种情况下，字符串都没有改变 - 其中有一个转义"。这只是告诉 C# 字符是字符串的一部分而不是字符串终止符的一种方式。

回答by SLaks

You're misunderstanding escaping.

你误解了逃避。

The extra "characters are part of the string literal; they are interpreted by the compiler as a single".

额外的"字符是字符串文字的一部分；它们被编译器解释为单个".

The actual value of your string is still He said to me , "Hello World".How are you ?, as you'll see if you print it at runtime.

你的字符串的实际值仍然是He said to me , "Hello World".How are you ?，你会看到如果你在运行时打印它。

回答by Soner G?nül

You can use backslash either way;

您可以使用任何一种方式使用反斜杠；

string str = "He said to me, \"Hello World\". How are you?";

It prints;

它打印;

He said to me, "Hello World". How are you?

which is exactly same prints with;

这是完全相同的打印；

string str = @"He said to me, ""Hello World"". How are you?";

Here is a DEMO.

这是一个DEMO.

"is still part of your string.

"仍然是你的字符串的一部分。

Check out Escape Sequencesand String literalsfrom MSDN.

签出Escape Sequences并String literals从 MSDN。

回答by CodeCaster

Please explain your problem. You say:

请解释您的问题。你说：

But this involves adding character " to the string.

但这涉及向字符串添加字符“。

What problem is that? You can't type string foo = "Foo"bar"";, because that'll invoke a compile error. As for the addingpart, in string size terms that is not true:

那是什么问题？您不能键入string foo = "Foo"bar"";，因为这会引发编译错误。至于添加部分，在字符串大小方面是不正确的：

@"""".Length == "\"".Length == 1

回答by Daniel Antokoletz

In C# you can use the backslash to put special characters to your string. For example, to put ", you need to write \". There are a lot of characters that you write using the backslash: Backslash with a number:

在 C# 中，您可以使用反斜杠将特殊字符放入字符串中。例如，要放“，你需要写\”。您可以使用反斜杠编写很多字符： 带有数字的反斜杠：

• \000 null
• \010 backspace
• \011 horizontal tab
• \012 new line
• \015 carriage return
• \032 substitute
• \042 double quote
• \047 single quote
• \134 backslash
• \140 grave accent

• \000 空
• \010 退格
• \011 水平制表符
• \012 新行
• \015 回车
• \032 替代品
• \042 双引号
• \047 单引号
• \134 反斜杠
• \140 重口音

Backslash with othe character

带有其他字符的反斜杠

• \a Bell (alert)
• \b Backspace
• \f Formfeed
• \n New line
• \r Carriage return
• \t Horizontal tab
• \v Vertical tab
• \' Single quotation mark
• \" Double quotation mark
• \ Backslash
• \? Literal question mark
• \ ooo ASCII character in octal notation
• \x hh ASCII character in hexadecimal notation
• \x hhhh Unicode character in hexadecimal notation if this escape sequence is used in a wide-character constant or a Unicode string literal. For example, WCHAR f = L'\x4e00' or WCHAR b[] = L"The Chinese character for one is \x4e00".

• \a 铃（警报）
• \b 退格
• \f 换页
• \n 换行
• \r 回车
• \t 水平制表符
• \v 垂直制表符
• \' 单引号
• \" 双引号
• \ 反斜杠
• \? 字面问号
• \ ooo 八进制表示的 ASCII 字符
• \x hh 十六进制表示的 ASCII 字符
• \x hhhh 如果在宽字符常量或 Unicode 字符串文字中使用此转义序列，则为十六进制表示法的 Unicode 字符。例如，WCHAR f = L'\x4e00' 或 WCHAR b[] = L“一的汉字是\x4e00”。