使用

&dquo
<div>&dquo"+ title +@"&dquo</div>

或者转义双引号:

\"
<div>\""+ title +@"\"</div>

在c# 11.0预览版中，你可以使用原始字符串字面值。

Raw string literals are a new format for string literals. Raw string literals can contain arbitrary text, including whitespace, new lines, embedded quotes, and other special characters without requiring escape sequences. A raw string literal starts with at least three double-quote (""") characters. It ends with the same number of double-quote characters. Typically, a raw string literal uses three double quotes on a single line to start the string, and three double quotes on a separate line to end the string.

string str = """
    "How to add double quotes"
    """;

如果你想在HTML中添加双引号

echo "<p>Congratulations, &#8220;" . $variable . "&#8221;!</p>";

输出

Congratulations, "Mr John"!

在双引号前加一个反斜杠(\)。这应该有用。

一种间接的，但简单易懂的替代方法，在字符串的开头和结尾添加引号-

char quote = '"';

string modifiedString = quote + "Original String" + quote;

所以你本质上是问如何存储双引号在一个字符串变量?有两个解决方案:

var string1 = @"""inside quotes""";
var string2 = "\"inside quotes\"";

为了让大家更清楚发生了什么:

var string1 = @"before ""inside"" after";
var string2 = "before \"inside\" after";