How to change try/catch to double.TryParse

Question

How can i change this code to double.TryParse? Without try/catch.

static double PromptForDouble(string promptMessage)
{
    Console.WriteLine(promptMessage);
    while (true)
    {
        try
        {
            var input = Console.ReadLine(); // input = "12124124"
            return double.Parse(input); // 1.234
        }
        catch
        {
            Console.WriteLine("Zła wartość");
        }
    }
}

}

Answer 1

This does it.

        var input = "122.3";
        if (double.TryParse(input, out var parsedInput))
        {
            Console.WriteLine($"success {parsedInput}");
        }
        else
        {
            Console.WriteLine($"not able to parse {input}");
        }

Answer 2

I think you mean something like this:

static void Example() { 
    var input = Console.ReadLine();
    if(double.TryParse(input, out double d)) {
        Console.WriteLine(d);
    } else {
        Console.WriteLine("Please Insert a Double!");
    }
}

Answer 3

What have you tried?

            var success = double.TryParse("78787888", out var result);
            if (success)
                return result;
            else
                Console.WriteLine("Zła wartość");

... and then return something that indicates the invalid input