在visualstudio环境下用C#实现一个简单计算器

1、resource部分的代码：程序功能：实现一个简单的计算器usingSystem;using;usingSystem.ComponentModel;usingSystem.Data;usingSystem.Drawing;usingSystem.Linq;usingSystem.Text;using;namespacejisuanqi(publicpartialclassForml:FormpublicForml()|lnitializeComponent();)上一次值privateintiPrevValue=0;确定按下数字键后是否和上次的相连，默认为相连privateboolbAppen

2、d=true;上次按下的操作符号privatestringstrPrevOpt=IH,;用户单击数字键privatevoidNum_Click(objectsender,System.EventArgse)(得到按钮上的数字stringstrNum=()sender).Text;如果相连if(bAppend)(按下的数字和TextBox中显示的数字相连txtShow.Text=int.Parse(txtShow.Text+strNum).ToString();)不相连else(直接显示按下的数字txtShow.Text=strNum;设置连接标志为true,将后边所按下的数字进行连接bAppe

3、nd=true;)/“清除”按钮，将所有的信息清空privatevoidbtn_clear_Click(objectsender,EventArgse)|txtShow.Text="H,;bAppend=true;iPrevValue=0;操作符strPrevOpt=)操作符privatevoidOpt_Click(objectsender,System.EventArgse)|如果显示不为空if(txtShow.Text!=,H)得到当前显示的值intiCurValue=int.Parse(txtShow.Text);判断上次按下的操作符switch(strPrevOpt)(cas

4、e",+":iCurValue+=iPrevValue;break;case,-H:iCurValue=iPrevValue-iCurValue;break;case"*“：iCurValue*=iPrevValue;break;case7”：iCurValue=iPrevValue/iCurValue;break;default:break;取得上次按下的操做符strPrevOpt=(Button)senderJ.Text;设置为按下的数字不和上次进行连接bAppend=false;显示值txtShow.Text=iCurValue.ToString();上次的

5、值等于当前值iPrevValue=iCurValue;Design部分的代码:namespacejisuanqi(partialclassForml/<summary>/必需的设计器变量。/</summary>privatecomponents=null;/<summary>/清理所有正在使用的资源。/</summary>III<paramname="disposing"如果应释放托管资源，为true；否则为falseo</param>protectedoverridevoidDispose(booldisp

6、osing)|if(disposing&&(components!=null)components.Dispose();)base.Dispose(disposing);#regionWindows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>privatevoidlnitializeComponent()this.buttonl=new();this.txtShow=new();this.button2=new();this.button3=new();this.button4=new()

7、;this.buttons=new();this.buttonG=new();this.button7=new();this.button8=new();this.button9=new();this.buttonlO=new();this.buttonll=new();this.buttonl2=new();this.buttonl3=new();this.buttonl4=new();this.buttonl5=new();this.buttonlG=new();this.SuspendLayout();/buttonl/(27,49);(46,23);System.EventHandle

8、r(this.Num_Click);/txtShow/=new(27,12);="txtShow”；=new(234,21);=1；/button2/(88,49);(45,23);System.EventHandler(this.Num_Click);/button3/(153,49);(47,23);System.EventHandler(this.Num_Click);/button4/(215,49);(46,23);System.EventHandler(this.btn_clear_Click);/buttons/(27,93);(46,23);System.EventH

9、andler(this.Num_Click);/button6/(88,93);(45,23);System.EventHandler(this.Num_Click);/button7/(153,93);(47,23);System.EventHandler(this.Num_Click);/button8/(215,92);(46,23);System.EventHandler(this.Opt_Click);/button9/(27,133);(46,23);System.EventHandler(this.Num_Click);/buttonlO/(88,133);(44,23);Sys

10、tem.EventHandler(this.Num_Click);/buttonll/(154,133);(46,23);System.EventHandler(this.Num_Click);/buttonl2/(216,133);(45,23);System.EventHandler(this.Opt_Click);/buttonl3/(27,177);(46,23);System.EventHandler(this.Num_Click);/buttonl4/(87,177);(45,23);System.EventHandler(this.Opt_Click);/buttonlS/(15

11、3,177);(46,23);System.EventHandler(this.Opt_Click);/buttonlG/(215,177);(45,23);System.EventHandler(this.Opt_Click);/Forml/this.AutoScaleDimensions=new(6F,12F);this.AutoScaleMode=;this.ClientSize=new(284,240);(this.buttonl6);(this.buttonl5);(this.buttonl4);(this.buttonl3);(this.buttonl2);(this.button

12、ll);(this.buttonlO);(this.button9);(this.button8);(this.button7);(this.button6);(this.buttons);(this.button4);(this.button3);(this.button2);(this.txtShow);(this.buttonl);this.Name="Forml"this.Text="一个简单的计算器”;this.ResumeLayout(false);this.PerformLayout();)#endregionprivatebuttonl;privatetxtShow;privatebutton2;privatebutton3;privatebutton4;pri