error while round the value?

selva kumar

13y1.7k.NET

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...

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

13y ago
Accepted answer
The below one is the simplest one,

string[] str = total.ToString("0.00").Split('.');
Vulpes13y ago
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 kumar13y ago
Thank you dude......Cheers..
13y ago
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 < 0.51)
{
result = Math.Floor(total);
temp = Convert.ToString(result) + "%";
}
else
{
result = Math.Round(total);
temp = Convert.ToString(result) + "%";
}