Question

I am trying to extract a quoted text from an html response. However when i use regular expression to match the data i get the error message “Unrecognized escape sequence”.
The code is pasted below. Am i missing something basic here?

---

    static private string ParseText2GetLink(string response)
    {
        Match match = Regex.Match( response, @"("[^"]*\.csv")" );

        string key = null;
        // Here we check the Match instance.
        if (match.Success)
        {
            // Finally, we get the Group value and display it.
            key = match.Groups[1].Value;
            Console.WriteLine(key);
        }
        return key;
    }

Answer 1

To include a double quotation mark in a @"" string, you have to double it:

@"(""[^""]*\.csv"")"

Or you could use a normal string:

"(\"[^\"]*\\.csv\")"

(Note that now you have to escape the backslash.)