CODEWITHSUNDEEP
javascriptjqueryasp.netvalidation
Christoph
Christoph

Reputation: 915

Get a Event from asp.net's validators to jquery on status change

i would like to have an event fired in jquery, if the validators of my page change their states.

This is my usecase:

  1. In an Adressform the Validators all are hidden.
  2. If i submit the form, the get displayed.
  3. Now i want to fire a jQuery function, which renders all rows (not the inputfields, but their parents) with a red border (means add a css class)
  4. if i now change the field and the validator hides i also want to hide the border around the input's parent

i don't want to have a timer checking every 100ms the displayed validators (which would work perfectly), but i want to listen only to the show/hide events of the validators

any ideas, how i can add a listener to the change events of a validator?

regards Christoph

Upvotes: 2

Views: 1016

Answers (3)

Thomas D
Thomas D

Reputation: 422

Sorry for answering this old question, but I made a blog post about modifying the default javacscript evaluation function of the ASP.NET validators. Basically it comes down to this:

for (var i = 0; i < window.Page_Validators.length; i++) {
    // Create a new property and assign the original evaluation function to it
    window.Page_Validators[i].baseEvaluationFunction = window.Page_Validators[i].evaluationfunction;

    // Set our own validation function
    window.Page_Validators[i].evaluationfunction = evaluateField;
}

Next, in the 'evaluateField' function, write the code to set the css.

function evaluateField (validator) {
    // Run the original validation function
    var isvalid = validator.baseEvaluationFunction(validator);

    // Handle the result
    if (isvalid) {
        clearError(validator);
    } else {
        setError(validator);
    }

    // Return result
    return isvalid;
}

In the setError and clearError functions you can use jquery to find the parent row and apply css to it. Hope this helps!

Upvotes: 0

rick schott
rick schott

Reputation: 21117

Here is how you can call .NET validators from JavaScript:
Manually calling ASP.NET Validation with JavaScript

You could integrate the above with jQuery events or jQuery Validation.

NOTE: This solution is if you are tied to .NET Validators, otherwise just use jQuery Validation as Dave mentioned.

Upvotes: 1

Dave Swersky
Dave Swersky

Reputation: 34810

Have you looked into the standard jQuery validator plugin? I'm pretty sure its validators have events you can hook into in just the way you describe.

Upvotes: 0

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