// Entity Framework Classic

// Doc: https://entityframework-classic.net/linq-dynamic

​

// @nuget: Z.EntityFramework.Classic

// @nuget: Newtonsoft.Json

​

using System;

using System.Collections.Generic;

using System.Data.Entity;

using System.Linq;

using System.Linq.Expressions;  

​

public class Program

{

    public static void Main()

    {

        string value = null;

      TimeSpan interval;

​

      value = "60d";

      if (TimeSpan.TryParseExact(value, @"d\d", null, out interval))

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

      else

         Console.WriteLine("Unable to parse '{0}'", value);

​

      value = "30.15:34:33.22";

      if (TimeSpan.TryParseExact(value, @"d\.hh:mm\:ss\.ff", null, out interval))

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

      else

         Console.WriteLine("Unable to parse '{0}'", value);

​

      value= "12.035";

      if (TimeSpan.TryParseExact(value, "ss\\.fff", null, out interval))

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

      else

         Console.WriteLine("Unable to parse '{0}'", value);

    }

}

​