OutOfMemoryException异常

Question

/// <summary>
        /// 方法名：PiPei
        /// 功能：判断输入的括号是否匹配
        /// </summary>
        /// <param name="strKuoHao">输入的括号</param>
        /// <returns></returns>
        public string PiPei(string strKuoHao)
        {
            string strSs = "";
            Stack<char> stack=new Stack<char> ();
            int nZhT = 1;
            int i =0;
            //try
            //{
                while (i < strKuoHao.Length && nZhT == 1)
                {
                    foreach (char c in strKuoHao)
                    {
                        switch (c)
                        {
                            case '(':
                                stack.Push(c);
                                break;
                            case '[':
                                stack.Push(c);
                                break;
                            case '{':
                                stack.Push(c);
                                break;
                            case ')':
                                if (stack.Count > 0 && stack.Peek() == '(')
                                {
                                    stack.Pop();
                                    i++;
                                }
                                else nZhT = 0;
                                break;
                            case '}':
                                if (stack.Count > 0 && stack.Peek() == '{')
                                {
                                    stack.Pop();
                                    i++;
                                }
                                else nZhT = 0;
                                break;
                            case ']':
                                if (stack.Count > 0 && stack.Peek() == '[')
                                {
                                    stack.Pop();
                                    i++;
                                }
                                else nZhT = 0;
                                break;
                        }
                    }
                }
            
            //}
            //catch (OutOfMemoryException ex)
            //{
            //    MessageBox.Show(ex.Message);
            //}
            if (stack.Count == 0 && nZhT == 1)
                strSs = "匹配";
            else strSs = "不匹配";
            return strSs;
        }我写的一段关于查看括号匹配的 代码 但是 程序在输入单个括号 时会引发OutOfMemoryException异常  说是内存不足以继续执行程序 这是我第一次遇到这种情况不知道怎么解决  还请高手  帮忙

Answer 1

改成while（true） 还是报错 

Answer 2

左括号为什么不加1？
        public static string PiPei(string strKuoHao)
        {
            string strSs = "";
            Stack<char> stack = new Stack<char>();
            int nZhT = 1;
            int i = 0;
            //try
            //{
            while (i < strKuoHao.Length && nZhT == 1)
            {
                foreach (char c in strKuoHao)
                {
                    switch (c)
                    {
                        case '(':
                            stack.Push(c);
                            i++;
                            break;
                        case '[':
                            stack.Push(c);
                            i++;
                            break;
                        case '{':
                            stack.Push(c);
                            i++;
                            break;
                        case ')':
                            if (stack.Count > 0 && stack.Peek() == '(')
                            {
                                stack.Pop();
                                i++;
                            }
                            else nZhT = 0;
                            break;
                        case '}':
                            if (stack.Count > 0 && stack.Peek() == '{')
                            {
                                stack.Pop();
                                i++;
                            }
                            else nZhT = 0;
                            break;
                        case ']':
                            if (stack.Count > 0 && stack.Peek() == '[')
                            {
                                stack.Pop();
                                i++;
                            }
                            else nZhT = 0;
                            break;
                    }
                }
            }            //}
            //catch (OutOfMemoryException ex)
            //{
            //    MessageBox.Show(ex.Message);
            //}
            if (stack.Count == 0 && nZhT == 1)
                strSs = "匹配";
            else strSs = "不匹配";
            return strSs;

Answer 3

我说你的语句变成while(true)了