Triggering Validators validating a control using js

Question

I have a setup similar to this:

<asp:TextBox ID="txtEmail" runat="server"/>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
    ControlToValidate="txtEmail" ErrorMessage="Required field cannot be left blank."
    Display="Dynamic"/>

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"
    ErrorMessage="Invalid email address."    ControlToValidate="txtEmail" 
    ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" 
    Display="Dynamic"/>

Now, I'm running some sort of js code which will change the value of the textbox, and I'd like to force the validators to trigger again. The JS code I'm using is intended to be modular, so when it triggers I don't know the name of the validation group, whether the control has a validator attached to it or whatever.

I've ended up using

Page_ClientValidate()

But the page itself is going to have more than one validator, and I don't want them all the pop up at the same time.

So the basic question is - is there a way that I can get a list of validators 'related' to a control, and force them to revalidate the input?

(To clarify - the code I posted above is just to explain my problem better. It's not the actual code I'm using)

Shai Aharoni · Accepted Answer · 2013-07-03 13:31:33Z

1

You can associate the email validators with a validation group (for example "emailValidationGroup") :

<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
    ControlToValidate="txtEmail" ErrorMessage="Required field cannot be left blank."
    Display="Dynamic" ValidationGroup="emailValidationGroup"/>

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"
    ErrorMessage="Invalid email address."    ControlToValidate="txtEmail" 
    ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" 
    Display="Dynamic" ValidationGroup="emailValidationGroup"/>

and then call : Page_ClientValidate("emailValidationGroup");

answered Jul 3, 2013 at 13:31

Shai Aharoni

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2 Comments

user2110845 Over a year ago

The javascript I'm writing is intended to be modular. I don't know at writing-time the name of the validation group. The intention is that this code will be 'plug in' and will work.

KennyZ Over a year ago

If you know the name of the textbox where you are changing the value, doesn't that tell you what validation group to trigger?

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