C# 检测括号匹配的问题

using System;

using System.Text;

namespace stack
{
    class Stack
    {
        char[] elem;
        public int count;
        int stacksize;
        public Stack()
        {
            //此处初始化数组elem,count,stacksize  
            this.elem = new char[10];
            this.stacksize = 10;
            this.count = 0;

        }
        public void Push(char x)
        {
         
            this.elem[count++] = x;
            
          //
        }
        public char Pop()
        {
            count--;
            return this.elem[count];