请教，手机数值框显示问题。 - 专家坐堂 - Foxtable(狐表) - 新一代数据库软件，完美融合Access、Foxpro、Excel、vb.net之优势，人人都能掌握的快速软件开发工具!

后台数据金额列，双精度小数，值72.9，调入手机数值框，却变成了72.9000015258789

请教各位老师，这是怎么回事？

If e.postvalues.ContainsKey("jhsl")Then

Dim shl As Integer = Tables("出入库总表").current("商品数量")

Dim jine As Double = Tables("出入库总表").current("实付款金额")

DataTables("出入库明细表").LoadFilter = "单据编号 = '"& Tables("出入库总表").current("单据编号") & "'"

With wb.AddPanelGroup("form1","pg1","已入库商品明细")

For Each ms As DataRow In DataTables("出入库明细表").datarows

If ms("单据编号") = Tables("出入库总表").current("单据编号") Then

Dim ko As String = "进货数量:" & ms("数量") & "开piao价:" & ms("开piao单价") & "优惠价格:" & ms("优惠金额")

Dim kk As String = "总计金额:" & ms("实付金额")

With .Add(ms("_Identify"),ms("商品名称"),ko,"./images/button.png","http://www.foxtable.com") '超链接

.AddFoot(kk)

End With

End If

End With

With wb.AddInputGroup("form1","ipg10","进货单汇总")

With .AddInput("合计数量","合计数量","text")

.value = "总计:" & shl & "件"

End With

With .AddInput("合计金额","合计金额","text")

.value = "总计:" & jine & "元"

End With

.AddInput("总单优惠","总单优惠","number")

End With

合计金额输入框出现的问题

蓝老师，第一种方式报错“需要声明round” ，第二种方式可以。

另外，还一个地方，三个数值框，“开piao价格”，“进货数量”，“总计金额”

总计金额，通过JS有开piao价格，进货数量计算得出。当开piao价格为8.1，进货数量为9 的时候，总计金额变成了72.899999999999

以下是代码：

With wb.AddInputGroup("form2","ipg2","正在入库商品……")

With .addTextArea("商品名称",2)

.value = bb("商品名称")

End With

With .AddInput("kpjg","开piao价格","number")

.Attribute = ""

.Step = 0.1

End With

.AddInput("jhsl","进货数量","number").Attribute = ""

With .AddInput("zjje","总计金额","number")

.Step = 0.1

End With

.AddInput("yhje","优惠金额","number").Attribute = ""

End With

js代码

function alc(){

zjje.value=kpjg.value * jhsl.value - yhje.value;

}

主题：请教，手机数值框显示问题。