asp.net中判断一个数最后一位是不是偶数？

            

                  double c = 0.12545;

                int a=Convert.ToInt32(c.ToString().Substring(c.ToString().Length-1, 1));

                if(a%2==0)
                {
                   Response.Write("这个数的最后一位是整数！");

                }