asp.net中的日历扩展程序 [英] calendar extender in asp.net

问题描述

我的比较验证器验证出生日期应小于当前日期如下

My compare validator to validate date of birth should be less than current date is as follows

<asp:CompareValidator ID="DateOfBirthValidator" runat="server" ValidationGroup="AddRecord"

                           ForeColor="Red" ControlToValidate="txtBirth" ControlToCompare="txtDate" Operator="LessThan"

                           Type="Date" ErrorMessage="Date of birth should be less than current date." CultureInvariantValues="true" SetFocusOnError="true"></asp:CompareValidator>

但它只验证日期和月份不是一年。如何解决该问题

But it only validate day and month not the year. How can I solve that problem

推荐答案

将CustomValidator与服务器端验证一起使用如下

use CustomValidator with server side validation as below

<asp:Calendar ID="calendarBirthDay" OnSelectionChanged="Selection_Changed" runat="server"></asp:Calendar>
<asp:CustomValidator ID="DateOfBirthValidator" OnServerValidate="DateCustVal_Validate" runat="server"></asp:CustomValidator>

服务器端代码示例：

server side code sample :

protected void DateCustVal_Validate(object source, ServerValidateEventArgs args)
{            
    args.IsValid   = calendarBirthDay < DateTime.Today;   
}

1。 CompareValidator 与 LessThan 运算符一起使用验证值格式 ControlToValidate 的值小于 ControlToCompare 的值。



2.在你的情况下，2 DateTime 比较对象，可能是同一年甚至同一只蛾只有一天不同的情况，所以没有问题，只是<$的正常行为c $ c> CompareValidator 。



3.如果要更改正常行为，则应实现自定义比较验证器。请参阅下一个链接： http://msdn.microsoft.com/en- us / library / 9eee01cx（v = vs.71）.aspx [ ^ ]

http://forums.asp.net/t/1238727.aspx?custom+compare+validator [ ^ ]

1. CompareValidator used with LessThan operator validate that the value form ControlToValidate has a value less then the value from ControlToCompare.

2.In your case, 2 DateTime objects are compared, and could be the situation that for the same year and even the same moth only the day is different, so there is no problem, is just the normal behavior of the CompareValidator.

3. If you want to change the normal behavior you should implement a custom compare validator. See the next links: http://msdn.microsoft.com/en-us/library/9eee01cx(v=vs.71).aspx[^]
http://forums.asp.net/t/1238727.aspx?custom+compare+validator[^]

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