使用vs2003或是vs2005来编写一个简单的计算器程序是非常简单的，直接从工具框中拽几个控件到窗体上，然后双击控件写几行事件处理代码就OK了。那么怎样脱离IED环境来写这么一个简单的程序呢？请接着往下看首先写一个叫Interface的类来定义窗口的外观//Interface.csusing System;using System.Windows.Forms;using System.Drawing;public class Interface:Forms{ private TextBox numberOneTextBox; private TextBox numberTwoTextBox; private TextBox resultTextBox; private Button addButton; private Button subButton; private Button mulButton; private Button divButton; public Interface()//构造函数 { this.Height=300;//定义窗体的大小 this.Width=300; this.StartPosition=FormStartPosition.CenterScreen;//窗体在桌面中间 this.Visible=true;//让窗体可见 this.MinimumSize=this.Size;//让窗体的最小大小为当前大小 numberOneTextBox=new TextBox(); numberOneTextBox.Width=20; numberOneTextBox.Left=15; numberOneTextBox.AutoSize=true; numberTwoTextBox=new TextBox(); numberTwoTextBox.Width=20; numberTwoTextBox.left=numberTwoTextBox.Right+15; numberTwoTextBox.AutoSize=true; resultTextBox=new TextBox(); resultTextBox.Width=20; resultTextBox.left=15; resultTextBox.AutoSize=true; int buttonHeight=50; int buttonWidth=80; addButton=new Button();//加按钮 addButton.Height=buttonHeight; addButton.Width=buttonWidth; addButton.Top=numberOneTextBox.Buttom+20; addButton.Left=15; addButton.Text="add"; subButton=new Button();//减按钮 subButton.Height=buttonHeight; subButton.Width=buttonWidth; subButton.Top=numberOneTextBox.Buttom+20; subButton.Left=addButton.Right+15; subButton.Text="sub"; mulButton=new Button();//乘按钮 mulButton.Height=buttonHeight; mulButton.Width=buttonWidth; mulButton.Top=numberOneTextBox.Buttom+20; mulButton.Left=subButton.Right+15; mulButton.Text="mul"; divButton=new Button();//除按钮 divButton.Height=buttonHeight; divButton.Width=buttonWidth; divButton.Top=numberOneTextBox.Buttom+20; divButton.Left=mulButton.Right+15; divButton.Text="div"; this.Control.Add(numberOneTextBox);//将控件添加到窗体 this.Control.Add(numberTwoTextBox); this.Control.Add(resultTextBox); this.Control.Add(addButton); this.Control.Add(subButton); this.Control.Add(mulButton); this.Control.Add(divButton); }}在上面的类中并没有主函数，现在来写一个Calculator类来加载刚才的控件//Calculator.csusing System;using System.Widows.Forms;public class Calculatot{ static void Main() { Application.Run(new Interface()); }}到这儿整个界面就完成了，但现在还不能实现计算的功能，下一篇完善这段代码让其能实现计算功能。
