Rounding of nearest 0.5

Question

I want to be rounded off this way

13.1, round to 13.5
13.2, round to 13.5
13.3, round to 13.5
13.4, round to 13.5
13.5 = 13.5
13.6, round to 14.0
13.7, roun         


        

Answer 1

I don't know if it is proper way, but it works. Try this if you want:

        double doubleValue = 13.5;
        double roundedValue = 0.0;
        if (doubleValue.ToString().Contains('.'))
        {
            string s = doubleValue.ToString().Substring(doubleValue.ToString().IndexOf('.') + 1);
            if (Convert.ToInt32(s) == 5)
            {
                roundedValue = doubleValue;
            }
            else
            {
                roundedValue = Math.Round(doubleValue);
            }
        }

        Console.WriteLine("Result:      {0}", roundedValue);