Parse string to TimeSpan
using System; public class Example { public static void Main() { string value = null; TimeSpan interval; value = "6"; if (TimeSpan.TryParseExact(value, "%d", null, out interval)) Console.WriteLine("{0} --> {1}", value, interval.ToString("c")); else Console.WriteLine("Unable to parse '{0}'", value); } } //6 --> 6.00:00:00