Prime Number, C# - rextester

Prime Number

//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;
using System.Reflection;
using System.Text;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
           
           Int32 inu = 1;
            try
            {
               if(IsPrimeNo(inu))            
                    Console.WriteLine("Number "+inu.ToString()+" is not Prime.");
                else
                    Console.WriteLine("Number "+inu.ToString()+" is Prime.");
            }
            catch(Exception ex)
            {
                 Console.WriteLine("Error occured while running job. Error is" + ex.Message );
            }
        }
        
        static bool IsPrimeNo(int iNu )
        {
            try
            {
                int IDm = 0;
                IDm = iNu/2;
                bool iBl = false;
                for(int i=2; i <= IDm; i++)
                {
                    if(iNu % i > 0)
                    {
                      iBl = false;
                    }
                    else
                    {
                       iBl = true;
                       break;
                    }
                }
                return iBl;
            }
            catch(Exception ex)
            {
                throw;
            }
        }
    }
}


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