string doubleQuotedPath = string.Format(@"""{0}""",path);

使用

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

或者转义双引号:

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

如果我理解你的问题，也许你可以试试这个:

string title = string.Format("<div>\"{0}\"</div>", "some text");

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"
    """;

在c#中，如果我们使用“”，这意味着它将表明下面的符号不是开发人员将使用的c#内置符号。

所以在字符串中，我们需要双引号，这意味着我们可以在双引号前加上""符号:

string s = "\"Hi\""

使用工作示例的字符串插值:

var title = "Title between quotes";
var string1 = $@"<div>""{title}""</div>";  // Note the order of the $@
Console.WriteLine (string1);

输出

<div>"Title between quotes"</div>