Issue with regex (3 capital letters proceeding with 4 numbers)

Question

I have the following code, which should be passing the regex but it isn't, I'm missing something?

if (Regex.IsMatch("ABC1234", "/^[A-Z]{3}[0-9]{4}$"))
        {
            //Pasosed Regex
            Console.WriteLine("Pass");
        }
        else
        {
            Console.WriteLine("No Pass");
        }

Output: "No Pass"

Can Anyone help?

Answer 1

Remove the / from your pattern and it should work.

Console.WriteLine(
    Regex.IsMatch("ABC1234", "^[A-Z]{3}[0-9]{4}$").ToString()
);
// True