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我想在複選框列表中至少選擇一個複選框進行驗證。我得到錯誤,如'cvDaysofWeeklist'的ControlToValidate屬性所引用的Control'CheckBoxListDaysofWeek'無法驗證。下面是我的asp代碼。讓用戶在複選框列表驗證中選擇至少一個複選框
<asp:CheckBoxList ID="CheckBoxListDaysofWeek" runat="server" RepeatDirection="Horizontal" CssClass="formatcheckboxlist" ValidationGroup="ReportSearch" CausesValidation="true">
<asp:ListItem Text="Mon" Value="1" Selected="True"></asp:ListItem>
<asp:ListItem Text="Tue" Value="2" Selected="True"></asp:ListItem>
<asp:ListItem Text="Wed" Value="3" Selected="True"></asp:ListItem>
<asp:ListItem Text="Thu" Value="4" Selected="True"></asp:ListItem>
<asp:ListItem Text="Fri" Value="5" Selected="True"></asp:ListItem>
<asp:ListItem Text="Sat" Value="6"></asp:ListItem>
<asp:ListItem Text="Sun" Value="7"></asp:ListItem>
</asp:CheckBoxList>
<ams:AMSCustomValidator ID="cvDaysofWeeklist" runat="server" ClientValidationFunction="ValidateDaysofWeekList" ControlToValidate="CheckBoxListDaysofWeek"
Display="None" ValidationGroup="ReportSearch"
Resource="Content" ResourceName="TAGSEARCH_TEXTBOXMANUFACTURESTARTDATEVALIDATOR" />
<ajaxToolkit:ValidatorCalloutExtender ID="vce_DaysofWeek" runat="server" TargetControlID="cvDaysofWeeklist" HighlightCssClass="HighlightField"></ajaxToolkit:ValidatorCalloutExtender>`
和我的javascript功能
function ValidateDaysofWeekList(source, args) {
var chkListDow = document.getElementById('<%= CheckBoxListDaysofWeek.ClientID %>');
var chkListinputs = chkListDow.getElementsByTagName("input");
for (var i = 0; i < chkListinputs.length; i++) {
if (chkListinputs[i].checked) {
args.IsValid = true;
return;
}
}
args.IsValid = false;
}
謝謝我刪除。但看起來像ajaxToolkit:ValidatorCalloutExtender不能與customvalidator一起使用? – rampantNinja
我通常遠離ajaxToolkit,並且無法在那裏爲您提供幫助。您可以在代碼隱藏頁面中定義驗證器。在您的CustomValidator上設置OnServerValidate並在代碼隱藏中定義一個函數。更多信息在這裏。 https://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.customvalidator(v=vs.110).aspx –