Use the Parse() method to convert strings to TimeSpan instances : TimeSpan Parse : Date Time C# Examples

    
using  System;

class  MainClas
{
    public  static  void  Main()
    {
        
        TimeSpan  myTimeSpan12  =  TimeSpan.Parse("1.8:10:30.1234567");
        Console.WriteLine("TimeSpan.Parse(\"1.8:10:30.1234567\")  =  "  +  myTimeSpan12);
    }
}