C#实现计算器

    以下是我用c#写的一个图形化的计算器，这是关键代码

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 
using System.Windows.Forms; 
using System.Collections; 
 
namespace Calculator 
{ 
    public partial class CalCulator : Form 
    { 
        private enum OptrNum                    //枚举类型定义，方便比较运算符的大小 
        { 
            LessThan,     //小于 
            Equal,        //等于 
            GreaterThan,  //大于 
            Error         //错误 
        }; 
 
        private string temp_textBoxView;                       //数据存储区 
 
        private CalCulatorStack OptrStack;                     //运算符栈 
 
        private CalCulatorStack NumStack;                      //运算数栈 
 
        private ArrayList temp_List;                           //分离数据临时变量存储区 
 
        private string StrOptr = "+-*/()#";                    //计算支持的运算符 
 
        private int[,] OptrReation = new int[7, 7]{            //存储操作数关系 
                                    {1,1,-1,-1,-1,1,1},        // + 
                                    {1,1,-1,-1,-1,1,1},        // - 
                                    {1,1,1,1,-1,1,1},          // * 
                                    {1,1,1,1,-1,1,1},          // / 
                                    {-1,-1,-1,-1,-1,0,2},      // ( 
                                    {1,1,1,1,2,1,1},           // ) 
                                    {-1,-1,-1,-1,-1,2,0}};     // # 
 
        public CalCulator() 
        { 
            this.StartPosition = FormStartPosition.CenterScreen; 
            OptrStack = new CalCulatorStack(); 
            NumStack = new CalCulatorStack(); 
            temp_List = new ArrayList(); 
            InitializeComponent(); 
            temp_textBoxView = string.Empty; 
        } 
        /// <summary> 
        /// ButtonOne点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void ButtonOneClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "1"; 
            textBoxView.Text = temp_textBoxView; 
        } 
 
        /// <summary> 
        /// ButtonTwo点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void ButtonTwoClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "2"; 
            textBoxView.Text = temp_textBoxView; 
        } 
 
        /// <summary> 
        /// ButtonThree点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void ButtonThreeClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "3"; 
            textBoxView.Text = temp_textBoxView; 
        } 
 
        /// <summary> 
        /// ButtonFour点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void ButtonFourClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "4"; 
            textBoxView.Text = temp_textBoxView; 
        } 
 
        /// <summary> 
        /// ButtonFive点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void ButtonFiveClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "5"; 
            textBoxView.Text = temp_textBoxView;            
        } 
 
        /// <summary> 
        /// ButtonSix点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void ButtonSixClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "6"; 
            textBoxView.Text = temp_textBoxView; 
        } 
 
        /// <summary> 
        /// ButtonSeven点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void ButtonSevenClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "7"; 
            textBoxView.Text = temp_textBoxView; 
        } 
 
        /// <summary> 
        /// ButtonEight点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void ButtonEightClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "8"; 
            textBoxView.Text = temp_textBoxView; 
        } 
 
        /// <summary> 
        /// ButtonNine点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void ButtonNineClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "9"; 
            textBoxView.Text = temp_textBoxView; 
        } 
 
        /// <summary> 
        /// ButtonZero点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void ButtonZeroClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "0"; 
            textBoxView.Text = temp_textBoxView;             
        } 
 
        /// <summary> 
        /// PriorBracketButton点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void PriorBracketButtonClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "("; 
            textBoxView.Text = temp_textBoxView; 
        } 
 
        /// <summary> 
        /// NextBracketButton点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void NextBracketButtonClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += ")"; 
            textBoxView.Text = temp_textBoxView; 
        } 
 
        /// <summary> 
        /// 加号点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void AddButtonClick(object sender,EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "+"; 
            textBoxView.Text = temp_textBoxView;            
        } 
 
        /// <summary> 
        /// 减号点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void SubButtonClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "-"; 
            textBoxView.Text = temp_textBoxView;           
        } 
 
        /// <summary> 
        /// 乘号点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void MulButtonClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "*"; 
            textBoxView.Text = temp_textBoxView;            
        } 
 
        /// <summary> 
        /// 除号点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void DivButtonClick(object sender, EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView += "/"; 
            textBoxView.Text = temp_textBoxView; 
        } 
        /// <summary> 
        /// 清除点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void ClrButtonClick(object sender,EventArgs e) 
        { 
            textBoxView.Text = string.Empty; 
            temp_textBoxView = string.Empty; 
        } 
        /// <summary> 
        /// 退格点击事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void DelButtonClick(object sender,EventArgs e) 
        { 
            if (temp_textBoxView == string.Empty) 
                return; 
            else 
            { 
                string temp; 
                temp = temp_textBoxView.Substring(0, temp_textBoxView.Length - 1); 
                temp_textBoxView = temp; 
                textBoxView.Text = temp_textBoxView; 
            } 
        } 
        /// <summary> 
        /// 求值事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void EuqButtonClick(object sender, EventArgs e) 
        { 
            if (temp_textBoxView == string.Empty) 
                return; 
            else 
            { 
                InitTempList(); 
                OptrStack.Push(temp_List[0]); 
                temp_List.RemoveAt(0); 
                object temp; 
                temp = temp_List[0]; 
                temp_List.RemoveAt(0); 
                while (Convert.ToChar(Convert.ToInt32(temp)) != '#' || Convert.ToChar(OptrStack.GetTop()) != '#') 
                { 
                    if (IsOptr(Convert.ToChar(Convert.ToInt32(temp))) == false) 
                    { 
                        NumStack.Push(Convert.ToDouble(temp)); 
                        temp = temp_List[0]; 
                        temp_List.RemoveAt(0); 
                    } 
                    else 
                    { 
                        switch (Precede(Convert.ToChar(OptrStack.GetTop()), Convert.ToChar(temp))) 
                        { 
                            case OptrNum.LessThan: 
                                OptrStack.Push(Convert.ToChar(temp)); 
                                temp = temp_List[0]; 
                                temp_List.RemoveAt(0); 
                                break; 
                            case OptrNum.Equal: 
                                OptrStack.Pop(); 
                                temp = temp_List[0]; 
                                temp_List.RemoveAt(0); 
                                break; 
                            case OptrNum.GreaterThan: 
                                char temp_optr; 
                                double a, b,c; 
                                temp_optr = Convert.ToChar(OptrStack.Pop()); 
                                b = Convert.ToDouble(NumStack.Pop()); 
                                a = Convert.ToDouble((NumStack.Pop())); 
                                c = Operate(a, temp_optr, b); 
                                NumStack.Push(c); 
                                break; 
                            case OptrNum.Error: 
                                MessageBox.Show(this, "运算错误，请检查输入是否正确!"); 
                                break; 
                        } 
                    } 
                } 
                textBoxView.Text = Convert.ToString(NumStack.Pop()); 
                temp_textBoxView = string.Empty; 
                temp_List.Clear(); 
                OptrStack.Clear(); 
                NumStack.Clear(); 
            } 
        } 
        /// <summary> 
        /// 加载事件 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void FrmLoad(object sender, EventArgs e) 
        { 
            buttonOne.Click += new EventHandler(ButtonOneClick); 
            buttonTwo.Click += new EventHandler(ButtonTwoClick); 
            buttonThree.Click += new EventHandler(ButtonThreeClick); 
            buttonFour.Click += new EventHandler(ButtonFourClick); 
            buttonFive.Click += new EventHandler(ButtonFiveClick); 
            buttonSix.Click += new EventHandler(ButtonSixClick); 
            buttonSeven.Click += new EventHandler(ButtonSevenClick); 
            buttonEight.Click += new EventHandler(ButtonEightClick); 
            buttonNine.Click += new EventHandler(ButtonNineClick); 
            buttonZero.Click += new EventHandler(ButtonZeroClick); 
            PriorBracketButton.Click += new EventHandler(PriorBracketButtonClick); 
            NextBracketButton.Click += new EventHandler(NextBracketButtonClick); 
            AddButton.Click += new EventHandler(AddButtonClick); 
            SubButton.Click += new EventHandler(SubButtonClick); 
            MulButton.Click += new EventHandler(MulButtonClick); 
            DivButton.Click += new EventHandler(DivButtonClick); 
            ClrButton.Click += new EventHandler(ClrButtonClick); 
            DelButton.Click += new EventHandler(DelButtonClick); 
            EuqButton.Click += new EventHandler(EuqButtonClick); 
        } 
        /// <summary> 
        /// 分离数据存储区的运算数与运算符, 
        /// 并将其插入到temp_list等待下一步计算 
        /// </summary> 
        private void InitTempList() 
        { 
            temp_textBoxView += "#"; 
            char[] Temp = temp_textBoxView.ToCharArray(); 
            double Num = 0, COUNT = 10; 
            int i; 
            temp_List.Add('#'); 
            for (i = 0; i < Temp.Length; i++) 
            { 
                if (IsOptr(Temp[i]) == true) 
                { 
                    if (Num != 0) 
                    { 
                        temp_List.Add(Num); 
                        Num = 0; 
                    } 
                    temp_List.Add(Temp[i]); 
                } 
                else 
                { 
                    Num = ConvertToInt32(Temp[i]) + Num * COUNT; 
                } 
            } 
        } 
        /// <summary> 
        /// 判断元素是否为操作符 
        /// </summary> 
        /// <param name="temp"></param> 
        /// <returns></returns> 
        private bool IsOptr(char temp) 
        { 
            if (temp == '+' || temp == '-' || temp == '*' || temp == '/' || 
                temp == '(' || temp == ')'||temp=='#') 
                return true; 
            else 
                return false; 
        } 
        /// <summary> 
        /// 比较两个运算符的大小 
        /// </summary> 
        /// <param name="prior_Optr"></param> 
        /// <param name="next_Optr"></param> 
        /// <returns></returns> 
        private OptrNum Precede(char prior_Optr,char next_Optr) 
        { 
            OptrNum optr_num=OptrNum.Error; 
            int i = StrOptr.IndexOf(prior_Optr); 
            int j = StrOptr.IndexOf(next_Optr); 
            if (OptrReation[i, j] == 1) 
                optr_num = OptrNum.GreaterThan; 
            if (OptrReation[i, j] == -1) 
                optr_num = OptrNum.LessThan; 
            if (OptrReation[i, j] == 0) 
                optr_num = OptrNum.Equal; 
            if (OptrReation[i, j] == 2) 
                optr_num = OptrNum.Error; 
            return optr_num; 
        } 
        /// <summary> 
        /// 运算函数 
        /// </summary> 
        /// <param name="a"></param> 
        /// <param name="Optr"></param> 
        /// <param name="b"></param> 
        private double  Operate(double a,char Optr,double b) 
        {           
            if (Optr == '+') 
                return a + b; 
            if (Optr == '-') 
                return a - b; 
            if (Optr == '*') 
                return a * b; 
            if (Optr == '/') 
                return a / b; 
            else 
                return 0; 
        } 
        /// <summary> 
        /// 将字符转换为数字 
        /// </summary> 
        /// <param name="temp"></param> 
        /// <returns></returns> 
        private int ConvertToInt32(char temp) 
        { 
            if (temp == '0') 
                return 0; 
            if (temp == '1') 
                return 1; 
            if (temp == '2') 
                return 2; 
            if (temp == '3') 
                return 3; 
            if (temp == '4') 
                return 4; 
            if (temp == '5') 
                return 5; 
            if (temp == '6') 
                return 6; 
            if (temp == '7') 
                return 7; 
            if (temp == '8') 
                return 8; 
            if (temp == '9') 
                return 9; 
            else 
                return 0; 
        } 
    } 
}