Question

Am trying to convert my string value(the value is millisecond value) from seconds.

Here is my code am trying to convert inside my xml append

xmlElement = doc.CreateNode(XmlNodeType.Element, "duration", null);
//Convert Milliseconds to Seconds

string durationMilli=DurationValue[1].TrimStart();
TimeSpan ts = TimeSpan.FromSeconds(durationMilli);//tried this didn't work
TimeSpan ts = TimeSpan.FromMilliseconds(durationMilli).TotalSeconds;//then tried this didn't work either
xmlElement.InnerText = DurationValue[1].TrimStart();
newChild.AppendChild(xmlElement);

It’s throwing:

“The best Overloaded method match for System.Timespan.FromMilliseconds(double) has invalid arguments”

am not sure i have to convert the string to actual millisecond value then use timespan to convert to seconds ? please guide me.

Thanks in Advance.

Modified the code little bit and this what am using in my code (this is Answer)

  string durationMilli = DurationValue[1].TrimStart();
            double milliseconds;
            // Try to convert string to double
            if (double.TryParse(durationMilli, out milliseconds))
            {
                // milliseconds now contains your value
                double ds = Math.Round(TimeSpan.FromMilliseconds(milliseconds).TotalSeconds);
                string totalsec = ds.ToString();
                xmlElement.InnerText = totalsec;
                newChild.AppendChild(xmlElement);
            }
            else
            {
                // durationMilli is not valid double - perhaps it contains letters or some special characters, report an error
            }

Answer 1

durationMilli is a string. To try to convert it to double use

string durationMilli=DurationValue[1].TrimStart();
double milliseconds;
// Try to convert string to double
if (double.TryParse(durationMilli, out milliseconds))
{
   // milliseconds now contains your value

   TimeSpan ts = TimeSpan.FromSeconds(milliseconds);
   xmlElement.InnerText = DurationValue[1].TrimStart();
   newChild.AppendChild(xmlElement);
}
else
{
   // durationMilli is not valid double - perhaps it contains letters or some special characters, report an error
}