// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002200/char-getnumericvalue

​

// @nuget: Z.ExtensionMethods

​

using System;

​

public class Program

{

    public static void Main()

    {

        char inputChar = '2';

        string str = "EF6";

        //C# Extension Method: Char - GetNumericValue

        var result = inputChar.GetNumericValue();

​

        Console.WriteLine(result);

        //C# Extension Method: Char - GetNumericValue

        result = str[2].GetNumericValue();

​

        Console.WriteLine(result);

    }   

}