C# 整数转化成字符串

上一篇实现字符串转化成整数，这里实现整数转化成字符串。

实现方法IntToStr，代码：

        /// <summary>
        /// 将数字转化为字符串
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        private static string IntToStr(int value)
        {
            string str = "";
            Stack<char> stack = new Stack<char>();
            bool isNagetive = false; 
            int digit = 0;
            char c;

            //负整数
            if (value<0)  
            {
                isNagetive = true;
                while (value <= -10)
                {
                    digit = -(value % 10);   //求个位数
                    c = (char)('0' + digit); //求digit对应的char
                    stack.Push(c);           //压入栈
                    value = value / 10;      //除以10的整数部分
                }
                if (value!=0)  //最后一位
                {
                    c = (char)('0' + -value);
                    stack.Push(c);
                }
            }
            
            //0
            else if (value == 0)
            {
                c = (char)('0');
                str += c;
                return str;
            }

            //正整数
            else
            {
                while (value >= 10)
                {
                    digit = value % 10; 
                    c = (char)('0' + digit); 
                    stack.Push(c);     
                    value = value / 10; 
                }
                if (value != 0)
                {
                    c = (char)('0' + value);
                    stack.Push(c);
                }
            }

            if (isNagetive)
            {
                stack.Push('-');
            }

            while (stack.Count>0)
            {
                str += stack.Pop();
            }

            return str;
        }