Switch case and generics checking

Question

I want to write a function that format int and decimal differently into string

I have this code:

and I want to rewrite it to generi

Answer 1

You could check the type of the variabele;

    public static string FormatWithCommaSeperator(T value)
    {
        if (value is int)
        {
            // Do your int formatting here
        }
        else if (value is decimal)
        {
            // Do your decimal formatting here
        }
        return "Parameter 'value' is not an integer or decimal"; // Or throw an exception of some kind?
    }