// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002507/object-tonullabledatetimeordefault

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

        object val1 = "06 July 2008 7:32:47 AM";

        object val2 = "17:32:47.003";

        object thisNull = null;

        object thisInvalid = "FizzBuzz";

        DateTime defaultVal = "1/1/2000 12:00:00 AM".ToDateTime();

        string format = "{0, -30} {1, -15}";

        Console.WriteLine(format, "Object", "ToNullableDateTimeOrDefault");

        Console.WriteLine(format, "------", "---------------------------");

        // C# Extension Method: Object - ToNullableDateTimeOrDefault

        Console.WriteLine(format, val1, val1.ToNullableDateTimeOrDefault());

        Console.WriteLine(format, val2, val2.ToNullableDateTimeOrDefault());

        Console.WriteLine(format, "null", thisNull.ToNullableDateTimeOrDefault());

        Console.WriteLine(format, thisInvalid, thisInvalid.ToNullableDateTimeOrDefault());

        Console.WriteLine(format, thisInvalid, thisInvalid.ToNullableDateTimeOrDefault(defaultVal));

        Console.WriteLine(format, thisInvalid, thisInvalid.ToNullableDateTimeOrDefault(() => defaultVal));

    }

}