// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002498/object-tonullableboolean

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

        string format = "{0, -49} {1, -15}";

        object[] values = { null, 16.33, -24, 0, "12", "12.7", String.Empty, 

                     "1String", "True", "false", new System.Collections.ArrayList() };

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

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

        foreach(var val in values)

        {

            Console.Write("{0,-50}", val != null ? String.Format("{0} ({1})", val, val.GetType().Name) : "null");

            try 

            {

                // C# Extension Method: Object - ToNullableBoolean

                bool? result = val.ToNullableBoolean();

                Console.WriteLine("{0}", result);

            }   

            catch (FormatException) 

            {

                Console.WriteLine("Bad Format");

            }

            catch (InvalidCastException) 

            {

                Console.WriteLine("No Conversion");

            }  

        }

    }

}