如何对用户控件应用验证

Question

我有一个ascx文件，其中放置了以下代码：

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>
<asp:TextBox ID="textboxDate" runat="server" CssClass="FieldValue" MaxLength="10"
Columns="12" autocomplete="off" Style="padding-right: 18px; border: 1px solid #567890;" />
<ajaxToolkit:CalendarExtender ID="calendarExtenderDate" runat="server" TargetControlID="textboxDate"
PopupButtonID="textboxDate" />
<asp:RequiredFieldValidator runat="server" Enabled="false" ControlToValidate="textboxDate"
ID="valRequired" ErrorMessage="* This field is required" EnableClientScript="true"
Display="Dynamic" Text="*" />
<asp:CompareValidator runat="server" CssClass="error" ControlToValidate="textboxDate"
Operator="DataTypeCheck" Display="Dynamic" Type="Date" ID="valValidDate" ErrorMessage="* Date is in an incorrect format"
Text="*" EnableClientScript="true" />

<asp:CustomValidator CssClass="error" Text="*" runat="server" ID="rangeVal" Display="dynamic" OnServerValidate="rangeVal_Validate" />

我在我的一个窗体中调用此用户控件

 <uc:DateControl ID="dateControlStart" runat="server" RequiredErrorMessage="please enter date" />

所以，我希望如果用户选择任何小于或等于当前日期的日期，应该出现一个错误，说"不正确的错误"。我想在客户端的 aspx 页而不是在用户控件中进行此验证。谁能帮我？

Answer 1

<asp:CustomValidator ID="uxDateFormatValidator" runat="server" ControlToValidate="dateControlStart$textboxDate"
Display="Static" ErrorMessage="Error" ClientValidationFunction="ValidateDateAgainstMinDate"
 />
 function ValidateDateAgainstMinDate(oSrc, args) {
var dateParts = args.Value.split('.');// which separator do you use?
if (dateParts.length >= 3) {
    var day = dateParts[2];
    var month = dateParts[1] - 1; //this one rocks
    var year = dateParts[0];
    var date = new Date(year, month, day);
    var minDate = new Date(1900, 0, 1); // use just new Date(); for today
    args.IsValid = date >= minDate
        && date.getDate() == day
        && date.getMonth() == month
        && date.getFullYear() == year;
}
else {
    args.IsValid = false;
}

}

CustomValidator 必须与 uc：DateControl 一起插入您的页面