股票的小程序

private void Button1_Click(object sender, System.EventArgs e)
  {
   double Total,bprice,sprice,temp,procedure,BTotal,STotal;//买卖总资金，买入价，卖出价，临时价钱,手续费,买入需要花费的钱，卖出能够得到的钱
   int totalNum;//买入数量
   if(txName.Text.ToString()=="")
   {
    lbResult.Text+="股票名不能为空";
   }
   else if(txID.Text.ToString()=="")
   {
    lbResult.Text+="<BR>股票代码不能为空";
    
   }
   else if (txNum.Text.ToString()=="")
   {
    lbResult.Text+="<BR>交易数量不能为空";
   }
   else if (txBprice.Text.ToString()=="")
   {
    lbResult.Text+="<BR>买入价格不能为空";

   }
   else
   {
    //如果是买股票
    bprice=double.Parse(txBprice.Text.ToString());
    totalNum=Int32.Parse(txNum.Text.ToString());
    Total=bprice*totalNum;
    //     if(Total<1000)
    //      procedure=5;//买时交的手续费
    //     else
    procedure=Total*0.006;

    　　//所以共支出
    BTotal=Total+procedure;

    if(opBuy.Checked==true)
    {
     //假设卖出的价格为Ｘ
     //计算不亏不赚的最低价钱
     sprice=1.006*bprice/0.994;
     lbResult.Text+="<BR>不亏本价钱－－－＞"+sprice.ToString("F2");
     //卖出价钱在哪个范围你会收益０－１０％

    }
    else//如果是卖股票
    {
     if (txSprice.Text.ToString()=="")
     {
      lbResult.Text+="<BR>卖出价格不能为空";
     }
     else
     {
      sprice=double.Parse(txSprice.Text.ToString());
      STotal=totalNum*sprice;
      procedure+=STotal*0.006;
      temp=STotal-BTotal-procedure;
      lbResult.Text+="<BR>在这个价钱("+sprice.ToString()+")卖出，您获得的收益是"+temp.ToString("F2");

     }

    }

   }
  }