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

如果你必须经常这样做，并且你想让代码更干净，你可能会喜欢有一个扩展方法。

这是非常明显的代码，但我仍然认为它可以帮助您节省时间。

  /// <summary>
    /// Put a string between double quotes.
    /// </summary>
    /// <param name="value">Value to be put between double quotes ex: foo</param>
    /// <returns>double quoted string ex: "foo"</returns>
    public static string AddDoubleQuotes(this string value)
    {
        return "\"" + value + "\"";
    }

然后你可以在你喜欢的每个字符串上调用foo. adddoublequotes()或"foo". adddoublequotes()。

<i class=\"fa fa-check-circle\"></i>"与Eval()数据绑定的三元运算符一起使用:

Text = '<%# Eval("bqtStatus").ToString()=="Verified" ? 
       Convert.ToString("<i class=\"fa fa-check-circle\"></i>") : 
       Convert.ToString("<i class=\"fa fa-info-circle\"></i>"

你可以使用$。

插入字符串: 用于构造字符串。插值字符串看起来像包含插值表达式的模板字符串。插值后的字符串返回一个字符串，该字符串将其包含的插值表达式替换为它们的字符串表示形式。该特性在c# 6及更高版本中可用。

string commentor = $"<span class=\"fa fa-plus\" aria-hidden=\"true\"> {variable}</span>";

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"
    """;