每日总结

window窗体开发

计算器实现

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;

 

namespace experiment1

{

    public partial class Form1 : Form

    {

        double a = 0;

        double b = 0;

        bool c = false;

        string d;

        public Form1()

        {

            InitializeComponent();

        }

 

        private void Form1_Load(object sender, EventArgs e)

        {

 

        }

 

        private void button1_Click(object sender, EventArgs e)

        {

            if (c == true)

            {

                textBox1.Text = "";

                c = false;

            }

            textBox1.Text += "7";

        }

 

        private void button6_Click(object sender, EventArgs e)

        {

                if (c == true)

                {

                    textBox1.Text = "";

                    c = false;

                }

                textBox1.Text += "1";

        }

 

        private void button9_Click(object sender, EventArgs e)

        {

            if (c == true)

            {

                textBox1.Text = "";

                c = false;

            }

            textBox1.Text += "2";

        }

 

        private void textBox1_TextChanged(object sender, EventArgs e)

        {

 

        }

 

        private void button12_Click(object sender, EventArgs e)

        {

            if (c == true)

            {

                textBox1.Text = "";

                c = false;

            }

            textBox1.Text += "3";

        }

 

        private void button5_Click(object sender, EventArgs e)

        {

            if (c == true)

            {

                textBox1.Text = "";

                c = false;

            }

            textBox1.Text += "4";

        }

 

        private void button8_Click(object sender, EventArgs e)

        {

            if (c == true)

            {

                textBox1.Text = "";

                c = false;

            }

            textBox1.Text += "5";

        }

 

        private void button11_Click(object sender, EventArgs e)

        {

            if (c == true)

            {

                textBox1.Text = "";

                c = false;

            }

            textBox1.Text += "6";

        }

 

        private void button2_Click(object sender, EventArgs e)

        {

            if (c == true)

            {

                textBox1.Text = "";

                c = false;

            }

            textBox1.Text += "8";

        }

 

        private void button3_Click(object sender, EventArgs e)

        {

            if (c == true)

            {

                textBox1.Text = "";

                c = false;

            }

            textBox1.Text += "9";

        }

 

        private void button7_Click(object sender, EventArgs e)

        {

            if (c == true)

            {

                textBox1.Text = "";

                c = false;

            }

            textBox1.Text += "0";

            if (d == "/")

            {

                textBox1.Clear();

                MessageBox.Show("除数不能为零", "错误提示", MessageBoxButtons.OK,MessageBoxIcon.Warning);

            }

        }

 

        private void button13_Click(object sender, EventArgs e)

        {

            c = true;

            b = double.Parse(textBox1.Text);

            d = "+";

        }

 

        private void button15_Click(object sender, EventArgs e)

        {

            c = true;

            b = double.Parse(textBox1.Text);

            d = "-";

        }

 

        private void button14_Click(object sender, EventArgs e)

        {

            c = true;

            b = double.Parse(textBox1.Text);

            d = "*";

        }

 

        private void button4_Click(object sender, EventArgs e)

        {

            c = true;

            b = double.Parse(textBox1.Text);

            d = "/";

        }

 

        private void button16_Click(object sender, EventArgs e)

        {

            switch (d)

            {

                case "+": a = b + double.Parse(textBox1.Text); break;

                case "-": a = b - double.Parse(textBox1.Text); break;

                case "*": a = b * double.Parse(textBox1.Text); break;

                case "/": a = b / double.Parse(textBox1.Text); break;

                case "x^2":a = b * b;break;

                case "sqrt": a = Math.Sqrt(b); break;

                case "log": a = Math.Log10(b); break;

                case "ln": a = Math.Log(b); break;

            }

            textBox1.Text = a + "";

            c = true;

        }

 

        private void button10_Click(object sender, EventArgs e)

        {

            textBox1.Text = "";

        }

 

        private void button17_Click(object sender, EventArgs e)

        {

            if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算!", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }

            else

            {

                c = true;

                b = double.Parse(textBox1.Text);

                d = "x^2";

            }

        }

 

        private void button18_Click(object sender, EventArgs e)

        {

            if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算!", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }

            else

            {

                c = true;

                b = double.Parse(textBox1.Text);

                d = "sqrt";

            }

        }

 

        private void button19_Click(object sender, EventArgs e)

        {

            if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算!", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }

            else

            {

                c = true;

                b = double.Parse(textBox1.Text);

                d = "log";

            }

        }

 

        private void button20_Click(object sender, EventArgs e)

        {

            if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算!", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }

            else

            {

                c = true;

                b = double.Parse(textBox1.Text);

                d = "ln";

            }

        }

 

        private void label2_Click(object sender, EventArgs e)

        {

 

        }

    }

}