建立基于对话框的标准程序,如下图所示,其余设置采用系统设置,点击完成
如下图,软件会生成下面的对话框,还有相应的库,代码,资源文件等
对上面的对话框进行编辑,如下图中所示,最后编辑的样子如下,其中1,5,6是Edit 控件,2,7是静态控件,3是buttion,4是取消按钮改了个名字,将各个控件按下图排好,并改好名字,其余部分采用软件默认
对1,5,7控件添加变量,对控件右击,选择如下
如下图变量添加向导,1选择Value,2选择Double (方便计算小数)3,是变量名,我们选择a,相同的方式,对上图中的1,5,7分别添加变量,分别为工a,b,sum
添加完后在对话框上双击计算按钮,就会生成相应的消息映射,进入如下代码中,见下图
在这个函数中添加下面代码,UpdataDate()函数中参数true表示从控件变量中获取数值,false相反
sum=a+b,就是我们先在控件中添加的三个变量,此处所做的计算器只是用来做个加法
添加完上述代码后,编译成功如下所示
ctrl+f5运行如下图
输入数值进行加法计算,你可以进行其它的相关扩展,比如减法,乘法等,都是相同的方法
//简单的计算器using System
using System.Drawing
using System.Collections
using System.ComponentModel
using System.Windows.Forms
namespace wincalc
{
///
/// Summary description for calcForm.
///
public class calcForm : System.Windows.Forms.Form
{
private System.Windows.Forms.Button button1
private System.Windows.Forms.Button button2
private System.Windows.Forms.Button button3
private System.Windows.Forms.Button button4
private System.Windows.Forms.Button button5
private System.Windows.Forms.Button button6
private System.Windows.Forms.Button button7
private System.Windows.Forms.Button button8
private System.Windows.Forms.Button button9
private System.Windows.Forms.Button button10
private System.Windows.Forms.Button bClr
private System.Windows.Forms.Button bDot
private System.Windows.Forms.Button bPlus
private System.Windows.Forms.Button bSub
private System.Windows.Forms.Button bMul
private System.Windows.Forms.Button bDiv
private System.Windows.Forms.Button bEqu
private System.Windows.Forms.TextBox txtCalc
//以下是要添加的代码
//定义变量
Double dblAcc
Double dblSec
bool blnClear,blnFrstOpen
String strOper
//以上是添加的代码
///
/// Required designer variable.
///
private System.ComponentModel.Container components = null
public calcForm()
{
//
// Required for Windows Form Designer support
//
InitializeComponent()
//
// TODO: Add any constructor code after InitializeComponent call
//
//以下是要添加的代码
//初始化设量
dblAcc=0
dblSec=0
blnFrstOpen=true
blnClear=true
strOper=new string('=',1)
//以上是添加的代码
}
///
/// Clean up any resources being used.
///
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose()
}
}
base.Dispose( disposing )
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.bPlus = new System.Windows.Forms.Button()
this.bMul = new System.Windows.Forms.Button()
this.bDot = new System.Windows.Forms.Button()
this.txtCalc = new System.Windows.Forms.TextBox()
this.bClr = new System.Windows.Forms.Button()
this.bDiv = new System.Windows.Forms.Button()
this.bSub = new System.Windows.Forms.Button()
this.button8 = new System.Windows.Forms.Button()
this.button9 = new System.Windows.Forms.Button()
this.bEqu = new System.Windows.Forms.Button()
this.button10 = new System.Windows.Forms.Button()
this.button4 = new System.Windows.Forms.Button()
this.button5 = new System.Windows.Forms.Button()
this.button6 = new System.Windows.Forms.Button()
this.button7 = new System.Windows.Forms.Button()
this.button1 = new System.Windows.Forms.Button()
this.button2 = new System.Windows.Forms.Button()
this.button3 = new System.Windows.Forms.Button()
this.SuspendLayout()
//
// bPlus
//
this.bPlus.BackColor = System.Drawing.SystemColors.Control
this.bPlus.ForeColor = System.Drawing.SystemColors.ControlText
this.bPlus.Location = new System.Drawing.Point(208, 112)
this.bPlus.Name = "bPlus"
this.bPlus.Size = new System.Drawing.Size(32, 80)
this.bPlus.TabIndex = 1
this.bPlus.Text = "+"
//以下是要添加的代码
bPlus.Click += new System.EventHandler(this.btn_Oper)
//以上是添加的代码
//
// bMul
//
this.bMul.Location = new System.Drawing.Point(160, 112)
this.bMul.Name = "bMul"
this.bMul.Size = new System.Drawing.Size(32, 32)
this.bMul.TabIndex = 1
this.bMul.Text = "*"
//以下是要添加的代码
bMul.Click += new System.EventHandler(this.btn_Oper)
//以上是添加的代码
//
// bDot
//
this.bDot.ForeColor = System.Drawing.Color.Black
this.bDot.Location = new System.Drawing.Point(112, 208)
this.bDot.Name = "bDot"
this.bDot.Size = new System.Drawing.Size(32, 32)
this.bDot.TabIndex = 0
this.bDot.Text = "."
//以下是要添加的代码
bDot.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// txtCalc
//
this.txtCalc.Location = new System.Drawing.Point(16, 24)
this.txtCalc.Name = "txtCalc"
this.txtCalc.ReadOnly = true
this.txtCalc.RightToLeft = System.Windows.Forms.RightToLeft.Yes
this.txtCalc.Size = new System.Drawing.Size(224, 21)
this.txtCalc.TabIndex = 2
this.txtCalc.Text = ""
//
// bClr
//
this.bClr.BackColor = System.Drawing.SystemColors.Control
this.bClr.ForeColor = System.Drawing.SystemColors.ControlText
this.bClr.Location = new System.Drawing.Point(208, 64)
this.bClr.Name = "bClr"
this.bClr.Size = new System.Drawing.Size(32, 32)
this.bClr.TabIndex = 0
this.bClr.Text = "AC"
//以下是要添加的代码
bClr.Click += new System.EventHandler(this.btn_clr)
//以上是添加的代码
//
// bDiv
//
this.bDiv.Location = new System.Drawing.Point(160, 160)
this.bDiv.Name = "bDiv"
this.bDiv.Size = new System.Drawing.Size(32, 32)
this.bDiv.TabIndex = 1
this.bDiv.Text = "/"
//以下是要添加的代码
bDiv.Click += new System.EventHandler(this.btn_Oper)
//以上是添加的代码
//
// bSub
//
this.bSub.Location = new System.Drawing.Point(160, 64)
this.bSub.Name = "bSub"
this.bSub.Size = new System.Drawing.Size(32, 32)
this.bSub.TabIndex = 1
this.bSub.Text = "-"
//以下是要添加的代码
bSub.Click += new System.EventHandler(this.btn_Oper)
//以上是添加的代码
//
// button8
//
this.button8.Location = new System.Drawing.Point(16, 64)
this.button8.Name = "button8"
this.button8.Size = new System.Drawing.Size(32, 32)
this.button8.TabIndex = 0
this.button8.Text = "7"
//以下是要添加的代码
button8.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button9
//
this.button9.Location = new System.Drawing.Point(64, 64)
this.button9.Name = "button9"
this.button9.Size = new System.Drawing.Size(32, 32)
this.button9.TabIndex = 0
this.button9.Text = "8"
//以下是要添加的代码
button9.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// bEqu
//
this.bEqu.BackColor = System.Drawing.SystemColors.Control
this.bEqu.ForeColor = System.Drawing.SystemColors.ControlText
this.bEqu.Location = new System.Drawing.Point(160, 208)
this.bEqu.Name = "bEqu"
this.bEqu.Size = new System.Drawing.Size(80, 32)
this.bEqu.TabIndex = 1
this.bEqu.Text = "="
//以下是要添加的代码
bEqu.Click += new System.EventHandler(this.btn_equ)
//以上是添加的代码
//
// button10
//
this.button10.Location = new System.Drawing.Point(112, 64)
this.button10.Name = "button10"
this.button10.Size = new System.Drawing.Size(32, 32)
this.button10.TabIndex = 0
this.button10.Text = "9"
//以下是要添加的代码
button10.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button4
//
this.button4.Location = new System.Drawing.Point(112, 160)
this.button4.Name = "button4"
this.button4.Size = new System.Drawing.Size(32, 32)
this.button4.TabIndex = 0
this.button4.Text = "3"
//以下是要添加的代码
button4.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button5
//
this.button5.Location = new System.Drawing.Point(16, 112)
this.button5.Name = "button5"
this.button5.Size = new System.Drawing.Size(32, 32)
this.button5.TabIndex = 0
this.button5.Text = "4"
//以下是要添加的代码
button5.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button6
//
this.button6.Location = new System.Drawing.Point(64, 112)
this.button6.Name = "button6"
this.button6.Size = new System.Drawing.Size(32, 32)
this.button6.TabIndex = 0
this.button6.Text = "5"
//以下是要添加的代码
button6.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button7
//
this.button7.Location = new System.Drawing.Point(112, 112)
this.button7.Name = "button7"
this.button7.Size = new System.Drawing.Size(32, 32)
this.button7.TabIndex = 0
this.button7.Text = "6"
//以下是要添加的代码
button7.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button1
//
this.button1.BackColor = System.Drawing.SystemColors.Control
this.button1.ForeColor = System.Drawing.Color.Black
this.button1.Location = new System.Drawing.Point(16, 208)
this.button1.Name = "button1"
this.button1.Size = new System.Drawing.Size(80, 32)
this.button1.TabIndex = 0
this.button1.Text = "0"
//以下是要添加的代码
button1.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button2
//
this.button2.Location = new System.Drawing.Point(16, 160)
this.button2.Name = "button2"
this.button2.Size = new System.Drawing.Size(32, 32)
this.button2.TabIndex = 0
this.button2.Text = "1"
//以下是要添加的代码
button2.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// button3
//
this.button3.Location = new System.Drawing.Point(64, 160)
this.button3.Name = "button3"
this.button3.Size = new System.Drawing.Size(32, 32)
this.button3.TabIndex = 0
this.button3.Text = "2"
//以下是要添加的代码
button3.Click += new System.EventHandler(this.btn_clk)
//以上是添加的代码
//
// calcForm
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14)
this.ClientSize = new System.Drawing.Size(256, 261)
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.txtCalc,
this.bEqu,
this.bDiv,
this.bMul,
this.bSub,
this.bPlus,
this.bDot,
this.bClr,
this.button10,
this.button9,
this.button8,
this.button7,
this.button6,
this.button5,
this.button4,
this.button3,
this.button2,
this.button1})
this.Name = "calcForm"
this.Text = "计算器"
this.ResumeLayout(false)
}
#endregion
//以下是要添加的代码
//小数点的 *** 作
private void btn_clk(object obj,EventArgs ea)
{
if(blnClear)
txtCalc.Text=""
Button b3=(Button)obj
txtCalc.Text+=b3.Text
if(txtCalc.Text==".")
txtCalc.Text="0."
dblSec=Convert.ToDouble(txtCalc.Text)
blnClear=false
}
//程序开始点
private static void Main()
{
Application.Run(new calcForm())
}
private void btn_Oper(object obj,EventArgs ea)
{
Button tmp=(Button)obj
strOper=tmp.Text
if(blnFrstOpen)
dblAcc=dblSec
else
calc()
blnFrstOpen=false
blnClear=true
}
//等号运算
private void btn_equ(object obj,EventArgs ea)
{
calc()
}
//所有运算 *** 作
private void calc()
{
switch(strOper)
{
case "+":
dblAcc+=dblSec //加号运算
break
case "-":
dblAcc-=dblSec //减号运算
break
case "*":
dblAcc*=dblSec //乘号运算
break
case "/":
dblAcc/=dblSec //除号运算
break
}
strOper="=" //等号运算
blnFrstOpen=true
txtCalc.Text=Convert.ToString(dblAcc)//将运算结果转换成字符类型,并输出
dblSec=dblAcc//将运算数A的值放入运算数B中,以便后面运算
}
//清除按钮
private void btn_clr(object obj,EventArgs ea)
{
clear()
}
//清除按钮的 *** 作
private void clear()
{
dblAcc=0
dblSec=0
blnFrstOpen=true
txtCalc.Text=""
txtCalc.Focus()//设置焦点为txtCalc
}
//以上是添加的代码
}
}
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