WinForm模拟苹果手机计算器

这是 利用 SunnyUi 可视化设计的 UI界面

接下来是简单的计算逻辑的，有些细节还是可以继续优化的

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 Sunny.UI;

namespace EBear
{
    public partial class F_Counter : UIForm
    {
        public F_Counter()
        {
            InitializeComponent();
        }

        string G_str1, G_str2;//输入值
        //按钮输入方法
        private void Input(string str)
        {
            if (G_str1 =="0")
            {
                if (str ==".")
                {
                    G_str1 += str;
                }
                else
                {
                    G_str1 = str;
                }
            }
            else
            {
                G_str1 += str;
            }
            //格式显示问题
            ShowView(G_str1);
        }
        private void ShowView(string str)
        {
            //格式显示问题
            if (str.IndexOf(".") == -1) //整数
            {
                ShowText.Text = string.Format("{0:N0}", Convert.ToInt32(str));
            }
            else
            {
                string str1, str2 = "";
                string[] arr = str.Split(".");
                str1 = arr[0];
                if (arr.Length > 1) str2 = arr[1];

                ShowText.Text = string.Format("{0:N0}", Convert.ToInt32(str1)) + "." + str2;
            }
        }
        //按 0 事件
        private void Zern_Btn_Click(object sender, EventArgs e)
        {
            Input(Zern_Btn.TagString);
        }
        //按 . 事件
        private void Spot_Btn_Click(object sender, EventArgs e)
        {
            if (G_str1.IndexOf(".") == -1)
            {
                Input(Spot_Btn.TagString);
            }
        }
        //按 1 事件
        private void One_Btn_Click(object sender, EventArgs e)
        {
            Input(One_Btn.TagString);
        }
        //按 2 事件
        private void Two_Btn_Click(object sender, EventArgs e)
        {
            Input(Two_Btn.TagString);
        }
        //按 3 事件
        private void Three_Btn_Click(object sender, EventArgs e)
        {
            Input(Three_Btn.TagString);
        }
        //按 4 事件
        private void Four_Btn_Click(object sender, EventArgs e)
        {
            Input(Four_Btn.TagString);
        }
        //按 5 事件
        private void Five_Btn_Click(object sender, EventArgs e)
        {
            Input(Five_Btn.TagString);
        }
        //按 6 事件
        private void Six_Btn_Click(object sender, EventArgs e)
        {
            Input(Six_Btn.TagString);
        }
        //按 7 事件
        private void Seven_Btn_Click(object sender, EventArgs e)
        {
            Input(Seven_Btn.TagString);
        }
        //按 8 事件
        private void Eight_Btn_Click(object sender, EventArgs e)
        {
            Input(Eight_Btn.TagString);
        }
        //按 9 事件
        private void Night_Btn_Click(object sender, EventArgs e)
        {
            Input(Night_Btn.TagString);
        }
        //按 AC 事件
        private void AC_Btn_Click(object sender, EventArgs e)
        {
            G_str1 = "0";
            G_str2 = "0";
            Input("0");
        }
        //按 +/- 正负事件
        private void Opp_Btn_Click(object sender, EventArgs e)
        {
             G_str1 = Convert.ToString(Convert.ToDouble(G_str1) *-1);
            ShowView(G_str1);
        }
        //按 % 百分比事件
        private void Per_Btn_Click(object sender, EventArgs e)
        {
            G_str1 = Convert.ToString(Convert.ToDouble(G_str1) / 100);
            ShowView(G_str1);
        }
        //按 ÷ 除法事件
        private void Div_Btn_Click(object sender, EventArgs e)
        {
            Operation("除");
        }
        //按 × 乘法事件
        private void Mul_Btn_Click(object sender, EventArgs e)
        {
            Operation("乘");
        }
        //按 - 减法事件
        private void Sub_Btn_Click(object sender, EventArgs e)
        {
            Operation("减");
        }
        //按 + 加法事件
        private void Add_Btn_Click(object sender, EventArgs e)
        {
            Operation("加");
        }

        private void Operation(string str)
        {
            //赋值给第2operation
            G_str2 = G_str1;
            G_str1 = "0";
            Input("0");
            Res = str;
        }

        //按 = 等于事件
        string Res;
        private void Res_Btn_Click(object sender, EventArgs e)
        {
            switch (Res)
            {
                case "加": G_str2 = Convert.ToString(Convert.ToDouble(G_str2) + Convert.ToDouble(G_str1)); ShowView(G_str2);break;
                case "减":G_str2= Convert.ToString(Convert.ToDouble(G_str2) - Convert.ToDouble(G_str1)); ShowView(G_str2); break;
                case "除":G_str2= Convert.ToString(Convert.ToDouble(G_str2) / Convert.ToDouble(G_str1)); ShowView(G_str2); break;
                case "乘":G_str2= Convert.ToString(Convert.ToDouble(G_str2) * Convert.ToDouble(G_str1)); ShowView(G_str2); break;
                default:
                    break;
            }
        }
    }
}