using System;

using System.Globalization;

// see: https://stackoverflow.com/q/5366285/1016343

public class Program

{

    public static void Main()

    {

        string tempDate = "8/1/2019";

            //  27.06.1986

            DateTime temp= DateTime.ParseExact(tempDate.Trim(), "M/dd/yyyy", CultureInfo.InvariantCulture,DateTimeStyles.None);

        Console.WriteLine(temp.ToString());

    }

}

​

​