// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002539/object-tonullableushortordefault

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

        object val1 = 123;

        object val2 = "1090";

        object thisInvalid = "A100";

        object thisNull = null;

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

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

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

        // C# Extension Method: Object - ToNullableUShortOrDefault

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

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

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

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

        Console.WriteLine(format, thisInvalid, thisInvalid.ToNullableUShortOrDefault(1));

        Console.WriteLine(format, thisInvalid, thisInvalid.ToNullableUShortOrDefault(() => 2));

    }

}