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using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;namespace jisuan{/// /// Form1 的摘要说明。/// public class Form1 : System.Windows.Forms.Form{private System.Windows.Forms.TextBox textBox1;private System.Windows.Forms.TextBox textBox2;private System.Windows.Forms.TextBox textBox3;private System.Windows.Forms.ComboBox comboBox1;private System.Windows.Forms.Button button1;private System.Windows.Forms.Button button2;private System.Windows.Forms.Button button3;/// /// 必需的设计器变量。/// private System.ComponentModel.Container components = null;public Form1(){//// Windows 窗体设计器支持所必需的//InitializeComponent();//// TODO: 在 InitializeComponent 调用后添加任何构造函数代码//}/// /// 清理所有正在使用的资源。/// protected override void Dispose( bool disposing ){if( disposing ){if (components != null) {components.Dispose();}}base.Dispose( disposing );}#region Windows 窗体设计器生成的代码/// /// 设计器支持所需的方法 - 不要使用代码编辑器修改/// 此方法的内容。/// private void InitializeComponent(){this.textBox1 = new System.Windows.Forms.TextBox();this.textBox2 = new System.Windows.Forms.TextBox();this.textBox3 = new System.Windows.Forms.TextBox();this.comboBox1 = new System.Windows.Forms.ComboBox();this.button1 = new System.Windows.Forms.Button();this.button2 = new System.Windows.Forms.Button();this.button3 = new System.Windows.Forms.Button();this.SuspendLayout();// // textBox1// this.textBox1.Location = new System.Drawing.Point(24, 72);this.textBox1.Name = "textBox1";this.textBox1.Size = new System.Drawing.Size(100, 21);this.textBox1.TabIndex = 0;this.textBox1.TextChanged += new System.EventHandler(this.textBox1_TextChanged);// // textBox2// this.textBox2.Location = new System.Drawing.Point(312, 72);this.textBox2.Name = "textBox2";this.textBox2.Size = new System.Drawing.Size(100, 21);this.textBox2.TabIndex = 1;// // textBox3// this.textBox3.Location = new System.Drawing.Point(448, 72);this.textBox3.Name = "textBox3";this.textBox3.Size = new System.Drawing.Size(88, 21);this.textBox3.TabIndex = 2;// // comboBox1// this.comboBox1.Items.AddRange(new object[] {"+","-","*","/"});this.comboBox1.Location = new System.Drawing.Point(152, 72);this.comboBox1.Name = "comboBox1";this.comboBox1.Size = new System.Drawing.Size(121, 20);this.comboBox1.TabIndex = 3;this.comboBox1.SelectedIndexChanged += new System.EventHandler(this.comboBox1_SelectedIndexChanged);// // button1// this.button1.Location = new System.Drawing.Point(64, 184);this.button1.Name = "button1";this.button1.Size = new System.Drawing.Size(104, 32);this.button1.TabIndex = 4;this.button1.Text = "计算";this.button1.Click += new System.EventHandler(this.button1_Click);// // button2// this.button2.Location = new System.Drawing.Point(216, 192);this.button2.Name = "button2";this.button2.Size = new System.Drawing.Size(75, 23);this.button2.TabIndex = 5;this.button2.Text = "清除";this.button2.Click += new System.EventHandler(this.button2_Click);// // button3// this.button3.Location = new System.Drawing.Point(376, 192);this.button3.Name = "button3";this.button3.Size = new System.Drawing.Size(75, 23);this.button3.TabIndex = 6;this.button3.Text = "退出";this.button3.Click += new System.EventHandler(this.button3_Click);// // Form1// this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);this.ClientSize = new System.Drawing.Size(656, 366);this.Controls.Add(this.button3);this.Controls.Add(this.button2);this.Controls.Add(this.button1);this.Controls.Add(this.comboBox1);this.Controls.Add(this.textBox3);this.Controls.Add(this.textBox2);this.Controls.Add(this.textBox1);this.Name = "Form1";this.Text = "Form1";this.ResumeLayout(false);this.PerformLayout();}#endregion/// /// 应用程序的主入口点。/// [STAThread]static void Main() {Application.Run(new Form1());}public double jia(double a,double b){return a+b;}public double jian(double a,double b){return a-b;}public double cheng(double a,double b){return a*b;}public double chu(double a,double b){return a/b;}private void comboBox1_SelectedIndexChanged(object sender, System.EventArgs e){}private void textBox1_TextChanged(object sender, System.EventArgs e){}private void button1_Click(object sender, System.EventArgs e){string i=this.comboBox1.SelectedItem.ToString();switch(i){case "+":this.textBox3.Text=this.jia(double.Parse(this.textBox1.Text),double.Parse(this.textBox2.Text)).ToString();break;case "-":this.textBox3.Text=this.jian(double.Parse(this.textBox1.Text),double.Parse(this.textBox2.Text)).ToString();break;case "*":this.textBox3.Text=this.cheng(double.Parse(this.textBox1.Text),double.Parse(this.textBox2.Text)).ToString();break;case"/" :this.textBox3.Text=this.chu(double.Parse(this.textBox1.Text),double.Parse(this.textBox2.Text)).ToString();break;}}private void button2_Click(object sender, System.EventArgs e){this.textBox1.Text=null;this.textBox2.Text=null;this.textBox3.Text = null;}private void button3_Click(object sender, EventArgs e){//this.Hide();Application.Exit();//this.Close();}}} |
