我正在使用 java script 和 jquery 计算GridView
个单元格的总数。但是,编译时我总是遇到这个错误。
名称'total'在。中不存在 当前背景
内部GridView
代码:
<asp:TemplateField HeaderText="Header 1">
<ItemTemplate>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</ItemTemplate>
<FooterTemplate>
<asp:Label ID="lblTotal" runat="server" Text="Total" Font-Bold="true">
</asp:Label>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Header 2" >
<ItemTemplate>
<asp:TextBox ID="TextBox2" runat="server" class="calculate"
onchange="calculate()"></asp:TextBox>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="total" runat="server"></asp:TextBox>
</FooterTemplate>
javascript 和 jquery 代码:
<script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.min.js"
type="text/javascript">
<script language="javascript" type="text/javascript">
function calculate()
{
var txtTotal = 0.00;
//var passed = false;
//var id = 0;
$(".calculate").each(function (index, value) {
var val = value.value;
val = val.replace(",", ".");
txtTotal = MathRound(parseFloat(txtTotal) + parseFloat(val));
});
document.getElementById("<%=total.ClientID %>").value = txtTotal.toFixed(2);
}
function MathRound(number) {
return Math.round(number * 100) / 100;
}
</script>
如何帮助解决这个问题。
答案 0 :(得分:0)
您无法轻松访问GridView等模板控件内的控件。创建一个变量来保存total.ClientID,以便jQuery可以抓住它。
在你的aspx中:
var totalClientID = TotalClientID;
在codebehind中:
void GridView1_RowDataBound(Object sender, GridViewRowEventArgs e)
{
if(e.Row.RowType == DataControlRowType.Footer)
{
TotalClientID = ((TextBox)e.Row.FindControl("total")).ClientID;
}
}
答案 1 :(得分:0)
<script language="javascript" type="text/javascript">
function Calculate() {
var grid = document.getElementById("<%=grid.ClientID%>");
var sum = 0;
for (var i = 1; i < grid.rows.length; i++) {
var Cell = grid.rows[i].getElementsByTagName("input");
if (!Cell[4].value) {sum += 0; } else { sum += parseFloat(Cell[0].value);}
}
alert(sum);
}
</script>
<asp:TemplateField HeaderText="Current payment" >
<ItemTemplate>
<asp:TextBox ID="txtvalue" runat="server" Width="70px" BorderStyle="None" onkeyup="Calculate();" ></asp:TextBox>
</ItemTemplate>
<ItemStyle Width="120px" />
</asp:TemplateField>`enter code here`