如何正确地在Match.Regex中转义引号？

Question

Testbed: http://regexhero.net/tester/

Input String : "_sql": "SELECT * FROM AA" Regex : (?:"_sql"[\\s]*)([^,]*)

Desired result : "SELECT * FROM AA"

Now I went into c# and coded this up:

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

Why is the match.Success false?

Answer 1

You have forgot to put quotes " " around your string'.

Try-

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

Answer 2

You can have a separate variable, and properly escape it.

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

or

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