form1.cs

Visual C#2005程序设计教程

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace WinAppIO
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label labNumber1;
		private System.Windows.Forms.Label labNumber2;
		private System.Windows.Forms.Label labResult;
		private System.Windows.Forms.TextBox txtNumber1;
		private System.Windows.Forms.TextBox txtNumber2;
		private System.Windows.Forms.Button btnCalculate;
		private System.Windows.Forms.Button btnClear;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		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
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		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
		/// <summary>
		/// 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。
		/// </summary>
		private void InitializeComponent()
		{
			this.labNumber1 = new System.Windows.Forms.Label();
			this.labNumber2 = new System.Windows.Forms.Label();
			this.labResult = new System.Windows.Forms.Label();
			this.txtNumber1 = new System.Windows.Forms.TextBox();
			this.txtNumber2 = new System.Windows.Forms.TextBox();
			this.btnCalculate = new System.Windows.Forms.Button();
			this.btnClear = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// labNumber1
			// 
			this.labNumber1.Location = new System.Drawing.Point(34, 8);
			this.labNumber1.Name = "labNumber1";
			this.labNumber1.Size = new System.Drawing.Size(75, 29);
			this.labNumber1.TabIndex = 0;
			this.labNumber1.Text = "整数1：";
			this.labNumber1.TextAlign = System.Drawing.ContentAlignment.BottomLeft;
			// 
			// labNumber2
			// 
			this.labNumber2.Location = new System.Drawing.Point(178, 8);
			this.labNumber2.Name = "labNumber2";
			this.labNumber2.Size = new System.Drawing.Size(80, 29);
			this.labNumber2.TabIndex = 1;
			this.labNumber2.Text = "整数2：";
			this.labNumber2.TextAlign = System.Drawing.ContentAlignment.BottomLeft;
			// 
			// labResult
			// 
			this.labResult.Location = new System.Drawing.Point(38, 88);
			this.labResult.Name = "labResult";
			this.labResult.Size = new System.Drawing.Size(216, 124);
			this.labResult.TabIndex = 2;
			// 
			// txtNumber1
			// 
			this.txtNumber1.Location = new System.Drawing.Point(30, 48);
			this.txtNumber1.Name = "txtNumber1";
			this.txtNumber1.Size = new System.Drawing.Size(91, 25);
			this.txtNumber1.TabIndex = 3;
			this.txtNumber1.Text = "";
			// 
			// txtNumber2
			// 
			this.txtNumber2.Location = new System.Drawing.Point(166, 48);
			this.txtNumber2.Name = "txtNumber2";
			this.txtNumber2.Size = new System.Drawing.Size(96, 25);
			this.txtNumber2.TabIndex = 4;
			this.txtNumber2.Text = "";
			// 
			// btnCalculate
			// 
			this.btnCalculate.Location = new System.Drawing.Point(24, 216);
			this.btnCalculate.Name = "btnCalculate";
			this.btnCalculate.Size = new System.Drawing.Size(100, 30);
			this.btnCalculate.TabIndex = 5;
			this.btnCalculate.Text = "计算";
			this.btnCalculate.Click += new System.EventHandler(this.btnCalculate_Click);
			// 
			// btnClear
			// 
			this.btnClear.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.btnClear.Location = new System.Drawing.Point(168, 216);
			this.btnClear.Name = "btnClear";
			this.btnClear.Size = new System.Drawing.Size(100, 30);
			this.btnClear.TabIndex = 6;
			this.btnClear.Text = "清除";
			this.btnClear.Click += new System.EventHandler(this.btnClear_Click);
			// 
			// Form1
			// 
			this.AcceptButton = this.btnCalculate;
			this.AutoScaleBaseSize = new System.Drawing.Size(8, 18);
			this.CancelButton = this.btnClear;
			this.ClientSize = new System.Drawing.Size(292, 268);
			this.Controls.Add(this.btnClear);
			this.Controls.Add(this.btnCalculate);
			this.Controls.Add(this.txtNumber2);
			this.Controls.Add(this.txtNumber1);
			this.Controls.Add(this.labResult);
			this.Controls.Add(this.labNumber2);
			this.Controls.Add(this.labNumber1);
			this.MaximizeBox = false;
			this.MaximumSize = new System.Drawing.Size(300, 300);
			this.MinimizeBox = false;
			this.MinimumSize = new System.Drawing.Size(300, 300);
			this.Name = "Form1";
			this.Text = "求两个整数的和、差、积、商";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void btnCalculate_Click(object sender, System.EventArgs e)
		{
			int Number1,Number2,Number3;    //声明三个整型变量
			Number1=int.Parse(txtNumber1.Text);
			Number2=int.Parse(txtNumber2.Text);
			labResult.Text="计算结果：\n";
			Number3=Number1+Number2;
			labResult.Text+=("两个整数的和为："+Number3+"\n");
			Number3=Number1-Number2;
			labResult.Text+=("两个整数的差为："+Number3+"\n");
			Number3=Number1*Number2;
			labResult.Text+=("两个整数的积为："+Number3+"\n");
			float Number4=(float)Number1/Number2;
			labResult.Text+=("两个整数的商为："+Number4);
		}

		private void btnClear_Click(object sender, System.EventArgs e)
		{
			txtNumber1.Clear( );
			txtNumber1.Focus( );
			txtNumber2.Clear( );
			labResult.Text="";
		}
	}
}