ASP.NET客户端页面验证失败后，我可以运行一些自定义脚本吗？ [英] Can I run some custom script after ASP.NET client side page validation fails?

问题描述

我正在尝试运行一些客户端脚本，如果并且仅在时，客户端页面验证失败，并且无法确定我可以将其挂钩的位置。

I'm trying to run some client side script if, and only if, the client side Page validation fails, and can't figure out where I can hook it in.

如果我将我的JavaScript函数绑定到提交表单的按钮的OnClientClick，它将在客户端验证之前运行。如果我将它绑定到表单的OnSubmit，只有在验证通过时才会触发。

If i bind my JavaScript function to the OnClientClick of the button that submits the form, it runs before the client side validation. If I bind it to the OnSubmit of the form, that only fires if the validation passes.

关于如何或在哪里挂钩这样的东西的任何想法？或者，如果您有其他建议，我会向他们开放。

Any ideas of how or where I can hook something like this up? Or if you have other suggestions, I'm open to them.

<form id="frm" runat="server" 
     onsubmit="FUNCTION HERE WONT FIRE IF VALIDATION FAILS">
<asp:requiredfieldvalidator id="vld" runat="server" controltovalidate="txt"/>
<asp:textbox id="txt" runat="server"></asp:textbox>

<asp:button id="cmd" runat="server" OnClick="dosomething"
     OnClientClick="FUNCTION FIRES BEFORE VALIDATION OCCURS">

</form>

推荐答案

尝试使用 Page_ClientValidate（ ）从JavaScript触发验证，然后你可以运行一些自定义代码：

Try using Page_ClientValidate("") to trigger validation from JavaScript, and then you can run some custom code:

validate = function(){
    var isValid = Page_ClientValidate(""); //parameter is the validation group - thanks @Jeff
    if (isValid){
        isValid = somethingToCheck();
    }
    return isValid;
}

<asp:Button ID="Button1" runat="server" CausesValidation="false" OnClientClick="return validate();" ... />

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