// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002484/object-todouble

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

        object[] values = { true, 'a', 123, 1.764e32, "9.78", "1e-02",

                1.67e03, "A100", "1,033.67", DateTime.Now,

                Double.MaxValue };

        foreach (object value in values)

        {

            try

            {

                //C# Extension Method: Object - ToDouble

                double result = value.ToDouble();

                Console.WriteLine("Converted the {0} value {1} to {2}.",

                                  value.GetType().Name, value, result);

            }

            catch (FormatException)

            {

                Console.WriteLine("The {0} value {1} is not recognized as a valid Double value.",

                                  value.GetType().Name, value);

            }

            catch (InvalidCastException)

            {

                Console.WriteLine("Conversion of the {0} value {1} to a Double is not supported.",

                                  value.GetType().Name, value);

            }

        }

​

    }

}