Code which will convert Word into its Bindary Format, C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Code which will convert Word into its Bindary Format
            Console.WriteLine("Hello, Am program which will convert Word into its Bindary Format!");
            int dec = 0;
            string binStr = string.Empty;
            string sFullBinStr = string.Empty;
            string text = Console.ReadLine();
            Console.WriteLine("Value: "+text);
            char[] arr = text.ToCharArray();
            for (int i = 0; i < arr.Length; i++)
            {
                Console.WriteLine("Each Char:- "+arr[i] + " and it's ASCII Value:- "+ Convert.ToUInt16(arr[i]));
                dec = Convert.ToUInt16(arr[i]);
                while (dec > 0)
                {
                    binStr = binStr.Insert(0, (dec % 2).ToString());
                    dec /= 2;
                }
                Console.WriteLine("Binary Value:- "+binStr);
                sFullBinStr = sFullBinStr + "  "+ binStr;
                binStr = string.Empty;
            }
            Console.WriteLine("Binary Value of Word:- "+sFullBinStr);
        }
    }
}

Show compiler warnings [ - ] Show input
Compilation time: 0,19 sec, absolute running time: 0,08 sec, cpu time: 0,08 sec, average memory usage: 13 Mb, average nr of threads: 3, absolute service time: 0,32 sec