error while round the value?

Question

the following error occured while round the value ("Index was outside the bounds of the array.")

my code behind is..

double present = Convert.ToDouble(upnoodP.Text);
                double X = 100;
                double totaldays = Convert.ToDouble(uptwd.Text);
                double total = (present * X) / totaldays;
                string[] str = total.ToString().Split('.');
                double no1 = Convert.ToDouble("0." + str[1]);
                double result;
                if (no1 < 0.51)
                {
                    result = Math.Floor(total);
                    uppercent.Text = Convert.ToString(result) + "%";
                }
                else
                {
                    result = Math.Round(total);
                    uppercent.Text = Convert.ToString(result) + "%";
                }

how to resolve this error...

Muralidharan Deenathayalan · Answer

The below one is the simplest one, string[] str = total.ToString( "0.00" ).Split('.');

Vulpes · Answer

To round to the nearer integer with 0.5 being rounded down, you could also do: double present = Convert.ToDouble(upnoodP.Text); double X = 100; double totaldays = Convert.ToDouble(uptwd.Text); double total = (present * X) / totaldays; int result = (int)Math.Ceiling(total - 0.5001); uppercent.Text = Convert.ToString(result) + "%";

selva kumar · Answer

Thank you dude......Cheers..

Muralidharan Deenathayalan · Answer

Please try the below code, You need to use, string.Format, to get the .00 in the string. string stringTotal, temp; double present = Convert.ToDouble("20"); double X = 100; double totaldays = Convert.ToDouble("10"); double total = (present * X) / totaldays; stringTotal = String.Format("{0:0.00}", total); string[] str = stringTotal .Split('.'); double no1 = Convert.ToDouble("0." + str[1]); double result; if (no1 { result = Math.Floor(total); temp = Convert.ToString(result) + "%"; } else { result = Math.Round(total); temp = Convert.ToString(result) + "%"; }