The Program in C# Program to Convert Hexadecimal Number to Decimal number is given below:

using System;

namespace HexToDecimal
{
    class Program
    {
        static void Main(string[] args)
        {
            
            Console.WriteLine("Hello Codeauri Family, Enter a hexadecimal number here to convert them into equivalent decimal number: ");
            string hexValue = Console.ReadLine();
            int decValue = Convert.ToInt32(hexValue, 16);
            Console.WriteLine("Okay, the equivalent decimal number is: " + decValue);
            Console.ReadLine();
        }
    }
}

Output:

Hello Codeauri Family, Enter a hexadecimal number here to convert them into equivalent decimal number: AE
Okay, the equivalent decimal number is: 174

Pro-Tips💡

Here are the step by step execution of above program:

1. Imports the “System” namespace to access the Console and Convert classes.
2. Defines a namespace “HexToDecimal” containing a class “Program”.
3. In the “Main” method of the “Program” class:
   • Writes a message to the console asking the user to enter a hexadecimal number.
   • Reads the hexadecimal number entered by the user using the “ReadLine” method of the Console class and stores it in the “hexValue” string variable.
   • Converts the “hexValue” string to an integer using the “ToInt32” method of the Convert class, passing 16 as the second argument to indicate it is a hexadecimal value.
   • Writes the equivalent decimal value to the console using the “WriteLine” method.
   • Waits for the user to press enter using the “ReadLine” method of the Console class.