.NET program to check the number is palindrome or not

What is palindrome Number?

"Palindrome number is a number that remains the same when its digits are reversed"

Example:

Number 151 - palindrome number.
Number 152 - Not a palindrome number.

Program:

class PalindromeNumberOrNot
{
    public static void Main()
    {
        Console.WriteLine("********** Palindrome Number Check Example ********");
        Console.WriteLine("Enter Number to Want to check");
        int numberToCheck = int.Parse(Console.ReadLine());
        int lenthOfNumber = numberToCheck.ToString().Length;
        double reminder = 0;
        double sum = 0;
        int tempNo = numberToCheck;
        while (tempNo > 0)
        {
            reminder = tempNo % 10;
            sum = sum * 10 + reminder;
            tempNo = tempNo / 10;

        }
        if (sum == numberToCheck)
        {
            Console.WriteLine("The given Number {0} is a Palindrome Number", numberToCheck);
        }
        else
        {
            Console.WriteLine("The given Number {0} is NOT a Palindrome Number", numberToCheck);
        }
    }
}

output:

Input =151 (palindrome Number)