C# Program to Convert Hexadecimal to Decimal Number

using Newtonsoft.Json.Linq;

using System;

using System.Diagnostics;

using System.Text.RegularExpressions;

using System.Xml;

using System.Xml.Linq;

public class Program

{

    public static void Main(String[] args)

    {

        string HexVal;

        int DecimalVal;

        Console.WriteLine("Enter a Hexadecimal Number : ");

        HexVal = Console.ReadLine();

        var c = System.Globalization.NumberStyles.HexNumber;

         DecimalVal = int.Parse(HexVal, System.Globalization.NumberStyles.HexNumber);

        Console.WriteLine("The Decimal Number is : " + DecimalVal);

        Console.ReadKey();

    }

}

Output:-

Enter a Hexadecimal Number :

AD9

The Decimal Number is : 2777