C# replace not changing the input string

I have a JSON string like {"age":"N\/A"}, now I want to replace this N/A with some static text say empty so the JSON string is converted to {"age":empty}

This is my code:

string updated = Regex.Replace(jsonstring, "(\"N\\/A\")", "empty");

Console.WriteLine(updated);

After running the code I am seeing the updated string is not modified. it is still {"age":"N\/A"}. How to fix this?

>Solution :

You have to escape characters in your regex as well, your code should look like this:

string jsonstring = "{\"age\":\"N\\/A\"}";
string updated = Regex.Replace(jsonstring, "(\"N\\\\/A\")", "empty");
Console.WriteLine(updated);