C#编写的计算器算法.doc

usingSystem.Configuration;
usingSystem.Web;
usingSystem.Web.Security;
usingSystem.Web.UI;
usingSystem.Web.UI.WebControls;
usingSystem.Web.UI.WebControls.WebParts;
usingSystem.Web.UI.HtmlControls;
publicpartialclass计算器:System.Web.UI.Page
{staticdoublenum1,num2,sum=0;//定义变量
protectedvoidPage_Load(objectsender,EventArgse)
{if(!IsPostBack)
{stringThemeName;
txtSum.Text="";//先给计算器赋一个初始值为空
ThemeName=Request.QueryString["themeName"];
switch(ThemeName)//选择主题
{case"MyThemes1":
RadioButton1.Checked=true;
break;
case"MyThemes2":
RadioButton2.Checked=true;
break;
case"MyThemes3":
RadioButton3.Checked=true;
break;
default:
RadioButton1.Checked=true;
break;
}
}
}//第一次加载网页时

//单击数字键
protectedvoidbtn0_Click(objectsender,EventArgse)
{if(txtSum.Text=="0")
{txtSum.Text="0";
}
else
{txtSum.Text+="0";}
}
protectedvoidbtn1_Click(objectsender,EventArgse)
{if(txtSum.Text=="0")
{
txtSum.Text="1";
}
else
{
txtSum.Text+="1";
}
}
protectedvoidbtn2_Click(objectsender,EventArgse)
{
if(txtSum.Text=="0")
{
txtSum.Text="2";
}
else
{
txtSum.Text+="2";
}
}
protectedvoidbtn3_Click(objectsender,EventArgse)
{
if(txtSum.Text=="0")
{
txtSum.Text="3";
}
else
{
txtSum.Text+="3";
}
}
protectedvoidbtn4_Click(objectsender,EventArgse)
{
if(txtSum.Text=="0")
{
txtSum.Text="4";
}
else
{
txtSum.Text+="4";
}
}
protectedvoidbtn5_Click(objectsender,EventArgse)
{
if(txtSum.Text=="0")
{
txtSum.Text="5";
}
else
{
txtSum.Text+="5";
}
}
protectedvoidbtn6_Click(objectsender,EventArgse)
{if(txtSum.Text=="0")
{
txtSum.Text="6";
}
else
{
txtSum.Text+="6";
}
}
protectedvoidbtn7_Click(objectsender,EventArgse)
{
if(txtSum.Text=="0")
{
txtSum.Text="7";
}
else
{
txtSum.Text+="7";
}
}
protectedvoidbtn8_Click(objectsender,EventArgse)
{
if(txtSum.Text=="0")
{
txtSum.Text="8";
}
else
{
txtSum.Text+="8";
}
}
protectedvoidbtn9_Click(objectsender,EventArgse)
{
if(txtSum.Text=="0")
{
txtSum.Text="9";
}
else
{
txtSum.Text+="9";
}
}
protectedvoidbtnDot_Click(objectsender,EventArgse)
{
if(txtSum.Text!="")
txtSum.Text+=".";
}
//加、减、乘、除、取余算法
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