using System;

public class Program

{

    public static void Main()

    {

        string[] values = { "6", "6:12", "00:26:30", "6:12:14", "6:12:14:45", 

                          "6.12:14:45", "6:12:14:45.3448", 

                          "6:12:14:45,3448", "6:34:14:45" };

         foreach (string value in values)

         {

            try {

               TimeSpan ts = TimeSpan.Parse(value);

               Console.WriteLine("{0} --> {1}", value, ts.ToString("c"));

            }

            catch (FormatException) {

               Console.WriteLine("{0}: Bad Format", value);

            }   

            catch (OverflowException) {

               Console.WriteLine("{0}: Overflow", value);

            }

         } 

         Console.WriteLine();                                

    }

}