检查ASP.Net验证器客户端的结果 [英] Check result of ASP.Net validator clientside

问题描述

我知道内置的ASP.Net验证器带有客户端框架，但是我找不到任何可以检查单个验证器有效状态的东西.

I know the built-in ASP.Net validators come with a client-side framework, however I've been unable to find anything that lets me check a single validator for it's Valid state.

我希望这是可能的，所以我希望这里的人知道如何做:-)

I expect it to be possible though, so I hope someone in here knows how to do it :-)

有问题的验证器是RegularExpressionValidator，我用它来确定电子邮件地址是否有效.

The validator in question is a RegularExpressionValidator, which I use to determine whether an e-mail address is valid or not.

下面是一些简短的代码:

Here's some brief code:

<script>
function CheckForExistingEmail()
{
  Page_ClientValidate(); // Ensure client validation
  if (revEmail.IsValid) // pseudo code!
  {
    // Perform server side lookup in DB for whether the e-mail exists.
  }
}
</script>

<asp:TextBox runat="server" id="tbEmail" onblur="CheckForExistingEmail();" />
<asp:RegularExpressionValidator id="revEmail" runat="server" ControlToValidate="tbEmail" ErrorMessage="Not a valid e-mail address" ValidationExpression="([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})" />

推荐答案

我现在自己找到了解决方法:

I found a way around it myself now:

通过将ValidationGroup添加到验证器，我可以使用Page_ClientValidate(validationgroup)-返回布尔值.

By adding a ValidationGroup to the validator, I can use Page_ClientValidate(validationgroup) - which returns a bool value.

我不确定这与Pabuc的意思是否相同，如果是请放弃答案，我显然会选择它作为正确的答案:-)

I'm not sure if it was the same thing you meant Pabuc, if it was please drop an answer and I'll obviously select that as the correct one :-)

这是有效的代码:

<script>
function CheckForExistingEmail()
{
  if(Page_ClientValidate("email"))
  {
    // Perform server side lookup in DB for whether the e-mail exists.
  }
}
</script>

<asp:TextBox runat="server" id="tbEmail" onblur="CheckForExistingEmail();" />
<asp:RegularExpressionValidator id="revEmail" runat="server" ValidationGroup="email" ControlToValidate="tbEmail" ErrorMessage="Not a valid e-mail address" ValidationExpression="([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})" />

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