C#编写简易计算器附源代码超详细.docx

C#编写简易计算器附源代码超详细.docx

《C#编写简易计算器附源代码超详细.docx》由会员分享，可在线阅读，更多相关《C#编写简易计算器附源代码超详细.docx（33页珍藏版）》请在冰点文库上搜索。

C#编写简易计算器附源代码超详细

C#编写简易计算器（附源代码）

超详细

一、因为计算器设计的控件太多，不便使用控制台应用程序完成，所以这里使用Windows窗体应用程序，并命名为Calc,如下图所示：

二、向窗体中拖入需要的控件，如下图所示：

（完成效果图）

结果显示区（作者博客左边的文本框）是TextBox控件，并修改其name为txtShow，按键0~9为Button控件，并将其name分别修改为btn_0、btn_1、btn_2、btn_3、btn_4、btn_5、btn_6、btn_7、btn_8、btn_9；按键【负数】的name值修改为btn_sign，按键【.】的name修改为btn_dot，按键【+-*/】的name值分别修改为btn_add、btn_sub、btn_mul、btn_div，按键【=】的name值修改为btn_equ，按键【倒数】的name值修改为btn_rev，按键【平方】的name值修改为btn_sqr，按键【开方】的name值修改为btn_sqrt。

右边的计算器图片空间是PictureBox，作者博客控件是LinkLabel，可以不添加，以上所有控件均可按照需求添加，只保留自己需要的按钮控件和textbox控件即可。

三、代码部分（含解释），采用switch多分支语句编写

usingSystem;

usingSystem.Drawing;

usingSystem.Collections;

usingSystemponentModel;

usingSystem.Windows.Forms;

usingSystem.Data;

namespaceCalc

{

///

publicclassCalcForm:

System.Windows.Forms.Form

{

privateSystem.Windows.Forms.Buttonbtn_0;

privateSystem.Windows.Forms.Buttonbtn_1;

privateSystem.Windows.Forms.Buttonbtn_2;

privateSystem.Windows.Forms.Buttonbtn_3;

privateSystem.Windows.Forms.Buttonbtn_4;

privateSystem.Windows.Forms.Buttonbtn_5;

privateSystem.Windows.Forms.Buttonbtn_6;

privateSystem.Windows.Forms.Buttonbtn_7;

privateSystem.Windows.Forms.Buttonbtn_8;

privateSystem.Windows.Forms.Buttonbtn_9;

privateSystem.Windows.Forms.Buttonbtn_add;

privateSystem.Windows.Forms.Buttonbtn_sub;

privateSystem.Windows.Forms.Buttonbtn_mul;

privateSystem.Windows.Forms.Buttonbtn_div;

privateSystem.Windows.Forms.Buttonbtn_sqrt;

privateSystem.Windows.Forms.Buttonbtn_sign;

privateSystem.Windows.Forms.Buttonbtn_equ;

privateSystem.Windows.Forms.Buttonbtn_dot;

privateSystem.Windows.Forms.Buttonbtn_rev;

privateSystem.Windows.Forms.TextBoxtxtShow;

privateSystem.Windows.Forms.Buttonbtn_sqr;

privatePictureBoxpictureBox1;

privateLinkLabellinkLabel1;

///

privateSystemponentModel.Containercomponents=null;

publicCalcForm（）

{

//

//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

//

}

///

protectedoverridevoidDispose（booldisposing）

{

if（disposing）

{

if（components!

=null）

{

components.Dispose（）;

}

}

base.Dispose（disposing）;

}

#regionWindowsFormDesignergeneratedcode

///

privatevoidInitializeComponent（）

{

SystemponentModelponentResourceManagerresources=newSystemponentModelponentResourceManager（typeof（CalcForm））;

this.btn_9=newSystem.Windows.Forms.Button（）;

this.txtShow=newSystem.Windows.Forms.TextBox（）;

this.btn_8=newSystem.Windows.Forms.Button（）;

this.btn_7=newSystem.Windows.Forms.Button（）;

this.btn_div=newSystem.Windows.Forms.Button（）;

this.btn_sqrt=newSystem.Windows.Forms.Button（）;

this.btn_4=newSystem.Windows.Forms.Button（）;

this.btn_5=newSystem.Windows.Forms.Button（）;

this.btn_6=newSystem.Windows.Forms.Button（）;

this.btn_1=newSystem.Windows.Forms.Button（）;

this.btn_2=newSystem.Windows.Forms.Button（）;

this.btn_3=newSystem.Windows.Forms.Button（）;

this.btn_0=newSystem.Windows.Forms.Button（）;

this.btn_mul=newSystem.Windows.Forms.Button（）;

this.btn_sub=newSystem.Windows.Forms.Button（）;

this.btn_sign=newSystem.Windows.Forms.Button（）;

this.btn_equ=newSystem.Windows.Forms.Button（）;

this.btn_add=newSystem.Windows.Forms.Button（）;

this.btn_dot=newSystem.Windows.Forms.Button（）;

this.btn_sqr=newSystem.Windows.Forms.Button（）;

this.btn_rev=newSystem.Windows.Forms.Button（）;

this.pictureBox1=newSystem.Windows.Forms.PictureBox（）;

this.linkLabel1=newSystem.Windows.Forms.LinkLabel（）;

（（SystemponentModel.ISupportInitialize）（this.pictureBox1））.BeginInit（）;

this.SuspendLayout（）;

//

//btn_9

//

this.btn_9.BackColor=System.Drawing.SystemColors.ActiveBorder;

this.btn_9.BackgroundImageLayout=System.Windows.Forms.ImageLayout.Center;

this.btn_9.FlatAppearance.MouseDownBackColor=System.Drawing.SystemColors.ButtonFace;

this.btn_9.FlatAppearance.MouseOverBackColor=System.Drawing.Color.WhiteSmoke;

this.btn_9.Font=newSystem.Drawing.Font（"黑体",10.5F,System.Drawing.FontStyle.Bold,System.Drawing.GraphicsUnit.Point,（（byte）（134）））;

this.btn_9.ForeColor=System.Drawing.Color.Black;

this.btn_9.Location=newSystem.Drawing.Point（126,37）;

this.btn_9.Name="btn_9";

this.btn_9.Size=newSystem.Drawing.Size（59,31）;

this.btn_9.TabIndex=0;

this.btn_9.Tag="9";

this.btn_9.Text="9";

this.btn_9.UseVisualStyleBackColor=false;

this.btn_9.Click+=newSystem.EventHandler（this.btn_0_Click）;

//

//txtShow

//

this.txtShow.Location=newSystem.Drawing.Point（4,6）;

this.txtShow.Name="txtShow";

this.txtShow.ReadOnly=true;

this.txtShow.Size=newSystem.Drawing.Size（242,21）;

this.txtShow.TabIndex=1;

this.txtShow.TextAlign=System.Windows.Forms.HorizontalAlignment.Right;

//

//btn_8

//

this.btn_8.BackColor=System.Drawing.SystemColors.ActiveBorder;

this.btn_8.BackgroundImageLayout=System.Windows.Forms.ImageLayout.Center;

this.btn_8.FlatAppearance.MouseDownBackColor=System.Drawing.SystemColors.ButtonFace;

this.btn_8.FlatAppearance.MouseOverBackColor=System.Drawing.Color.WhiteSmoke;

this.btn_8.Font=newSystem.Drawing.Font（"黑体",10.5F,System.Drawing.FontStyle.Bold,System.Drawing.GraphicsUnit.Point,（（byte）（134）））;

this.btn_8.ForeColor=System.Drawing.Color.Black;

this.btn_8.Location=newSystem.Drawing.Point（66,37）;

this.btn_8.Name="btn_8";

this.btn_8.Size=newSystem.Drawing.Size（59,31）;

this.btn_8.TabIndex=2;

this.btn_8.Tag="8";

this.btn_8.Text="8";

this.btn_8.UseVisualStyleBackColor=false;

this.btn_8.Click+=newSystem.EventHandler（this.btn_0_Click）;

//

//btn_7

//

this.btn_7.BackColor=System.Drawing.SystemColors.ActiveBorder;

this.btn_7.BackgroundImageLayout=System.Windows.Forms.ImageLayout.Center;

this.btn_7.FlatAppearance.MouseDownBackColor=System.Drawing.SystemColors.ButtonFace;

this.btn_7.FlatAppearance.MouseOverBackColor=System.Drawing.Color.WhiteSmoke;

this.btn_7.Font=newSystem.Drawing.Font（"黑体",10.5F,System.Drawing.FontStyle.Bold,System.Drawing.GraphicsUnit.Point,（（byte）（134）））;

this.btn_7.ForeColor=System.Drawing.Color.Black;

this.btn_7.Location=newSystem.Drawing.Point（4,37）;

this.btn_7.Name="btn_7";

this.btn_7.Size=newSystem.Drawing.Size（59,31）;

this.btn_7.TabIndex=3;

this.btn_7.Tag="7";

this.btn_7.Text="7";

this.btn_7.UseVisualStyleBackColor=false;

this.btn_7.Click+=newSystem.EventHandler（this.btn_0_Click）;

//

//btn_div

//

this.btn_div.BackColor=System.Drawing.SystemColors.ActiveBorder;

this.btn_div.BackgroundImageLayout=System.Windows.Forms.ImageLayout.Center;

this.btn_div.FlatAppearance.MouseDownBackColor=System.Drawing.SystemColors.ButtonFace;

this.btn_div.FlatAppearance.MouseOverBackColor=System.Drawing.Color.WhiteSmoke;

this.btn_div.Font=newSystem.Drawing.Font（"黑体",10.5F,System.Drawing.FontStyle.Bold,System.Drawing.GraphicsUnit.Point,（（byte）（134）））;

this.btn_div.ForeColor=System.Drawing.Color.Red;

this.btn_div.Location=newSystem.Drawing.Point（187,37）;

this.btn_div.Name="btn_div";

this.btn_div.Size=newSystem.Drawing.Size（59,31）;

this.btn_div.TabIndex=4;

this.btn_div.Text="/";

this.btn_div.UseVisualStyleBackColor=false;

this.btn_div.Click+=newSystem.EventHandler（this.btn_div_Click）;

//

//btn_sqrt

//

this.btn_sqrt.BackColor=System.Drawing.SystemColors.ActiveBorder;

this.btn_sqrt.BackgroundImageLayout=System.Windows.Forms.ImageLayout.Center;

this.btn_sqrt.FlatAppearance.MouseDownBackColor=System.Drawing.SystemColors.ButtonFace;

this.btn_sqrt.FlatAppearance.MouseOverBackColor=System.Drawing.Color.WhiteSmoke;

this.btn_sqrt.Font=newSystem.Drawing.Font（"黑体",10.5F,System.Drawing.FontStyle.Bold,System.Drawing.GraphicsUnit.Point,（（byte）（134）））;

this.btn_sqrt.ForeColor=System.Drawing.Color.Black;

this.btn_sqrt.Location=newSystem.Drawing.Point（253,37）;

this.btn_sqrt.Name="btn_sqrt";

this.btn_sqrt.Size=newSystem.Drawing.Size（59,31）;

this.btn_sqrt.TabIndex=5;

this.btn_sqrt.Text="开方";

this.btn_sqrt.UseVisualStyleBackColor=false;

this.btn_sqrt.Click+=newSystem.EventHandler（this.btn_sqrt_Click）;

//

//btn_4

//

this.btn_4.BackColor=System.Drawing.SystemColors.ActiveBorder;

this.btn_4.BackgroundImageLayout=System.Windows.Forms.ImageLayout.Center;

this.btn_4.FlatAppearance.MouseDownBackColor=System.Drawing.SystemColors.ButtonFace;

this.btn_4.FlatAppearance.MouseOverBackColor=System.Drawing.Color.WhiteSmoke;

this.btn_4.Font=newSystem.Drawing.Font（"黑体",10.5F,System.Drawing.FontStyle.Bold,System.Drawing.GraphicsUnit.Point,（（byte）（134）））;

this.btn_4.ForeColor=System.Drawing.Color.Black;

this.btn_4.Location=newSystem.Drawing.Point（4,72）;

this.btn_4.Name="btn_4";

this.btn_4.Size=newSystem.Drawing.Size（59,31）;

this.btn_4.TabIndex=6;

this.btn_4.Tag="4";

this.btn_4.Text="4";

this.btn_4.UseVisualStyleBackColor=false;

this.btn_4.Click+=newSystem.EventHandler（this.btn_0_Click）;

//

//btn_5

//

this.btn_5.BackColor=System.Drawing.SystemColors.ActiveBorder;

this.btn_5.BackgroundImageLayout=System.Windows.Forms.ImageLayout.Center;

this.btn_5.FlatAppearance.MouseDownBackColor=System.Drawing.SystemColors.ButtonFace;

this.btn_5.FlatAppearance.MouseOverBackColor=System.Drawing.Color.WhiteSmoke;

this.btn_5.Font=newSystem.Drawing.Font（"黑体",10.5F,System.Drawing.FontStyle.Bold,System.Drawing.GraphicsUnit.Point,（（byte）（134）））;

this.btn_5.ForeColor=System.Drawing.Color.Black;

this.btn_5.Location=newSystem.Drawing.Point（66,72）;

this.btn_5.Name="btn_5";

this.btn_5.Size=newSystem.Drawing.Size（59,31）;

this.btn_5.TabIndex=7;

this.btn_5.Tag="5";

this.btn_5.Text="5";

this.