c# - c# 必须包含引号的字符串"

Question

string aniPattern=@"(?si:<option value=\\\"(?<year>.*?)\\)";

这会中断，因为 " 在中间。但我需要它，因为我在正则表达式中使用它。

我尝试使用string aniPattern="(?si:<option value=\\\"(?<year>.*?)\\\\)";（不带@），但它不是有效的正则表达式。

Answer 1

important - it isn't entirely clear what you want to match; I've answered on the premise that only the " is being a problem - but see also Mike Caron's answer which assumes everything is escaped incorrectly.

With a verbatim string literal (i.e. @"..."), " is escaped to "" - so your string becomes:

string aniPattern=@"(?si:<option value=\\\""(?<year>.*?)\\)";

With a regular string literal (without the leading @), you would need a lot worse:

string aniPattern="(?si:<option value=\\\\\\\"(?<year>.*?)\\\\)";

Answer 2

string aniPattern=@"(?si:<option value=""(?<year>.*?)\)";

For @ escaped strings, you double the quotation mark to escape it, since backslash is not used.

Answer 3

Use two double quotes next to each other, like so: ""