int value overflow

using System;//from   j  a  v  a2 s  .c  o  m

class Program
{
    static void Main(string[] args)
    {
        int i = int.MinValue;
        
        int result = i-1;
        Console.WriteLine("i=" + i);

        Console.WriteLine("result="+result);
        Console.WriteLine("result is int.MaxValue:" + (result == int.MaxValue));


    }
}

using System;//from  jav  a2 s. c  om
   
class MainClass
{
    public static void Main()
    {
        try
        {
            checked
            {
                int Integer1;
                int Integer2;
                int Sum;
   
                Integer1 = 9999999999;
                Integer2 = 2000000000;
                Sum = Integer1 + Integer2;
            }
        }
        catch(OverflowException)
        {
            Console.WriteLine("A mathematical operation caused an overflow.");
        }
    }
}