如何正确地在Match.Regex中转义引号？

Question

Testbed：http://regexhero.net/tester/

输入字符串："_sql": "SELECT * FROM AA" 正则表达式：(?:"_sql"[\s]*)([^,]*)

期望的结果：“SELECT * FROM AA”

现在我进入了c＃并编写了这个代码：

    Match match = Regex.Match("_sql\": \"SELECT * FROM AA", @"(?:""_sql""[\s]*)([^,]*)");
    if (match.Success)
    {
        String value = match.Groups[0].Value;
        Console.WriteLine(value);
    }

为什么match.Success为假？

Answer 1

您忘记在字符串周围添加引号" "。

尝试 -

Match match = Regex.Match("\"_sql\": \"SELECT * FROM AA\"", @"(?:""_sql""[\s]*)([^,]*)");

Answer 2

你可以有一个单独的变量，并正确地逃避它。

string newVa = "\"_sql\": \"SELECT * FROM AA\"";
Match match = Regex.Match(newVa , @"(?:""_sql""[\s]*)([^,]*)");

或

Match match = Regex.Match(@"""_sql"": ""SELECT * FROM AA""", @"(?:""_sql""[\s]*)([^,]*)");