How To Add Custom JavaScript To Client Side Causes Validation Function
Mar 29, 2011I have an asp.net web for with a few Validation controls on:
[code]....
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Apr 13, 2010Using the ValidationProperty I've managed to connect a RequiredFieldValidator with my custom control. When I enable client script in the validator, JavaScript errors occur.
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Jan 30, 2011I have a textbox in my application which has multiple validation on it e.g. RequiredFieldValidator, RegexValidation and CustomValidation. My page has several similar textboxes. So I just copy-paste and change id and controltovalidate properties and it is working.
Since similar tbxs are going to be used on another page as well, I think it would be nice to create my own custom TextBox control with built-in validation.
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Here is the example of what I need to do:
user writes name and address and submits. Both are validated both server and client side. If validation passes e-mail is send to given address and (name, address) pair is stored.as a response same page is displayed (I don't want redirect!) this time with confirmation. User can retype their name and submit. In such case e-mail will be resend to the address that corresponds to given name.
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Example ASP.NET MVC page
<%if (Model.Confirm == false){ %>
<% using (Html.BeginForm()) { %>
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[Code]....
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Apr 5, 2011I have a form that contains multiple and different input controls .. and I have two types of validation:
This type insures that the user input doesn't violate my application's constraints (required, max length, regExp).. and this is done on the client side using the ASP.NET Validation Controls .. and it's enforced by a server side validation.
This type works on a deeper level, like the database. it check if the entry is duplicate and any other check that can't be done on the UI level.
I use the ValidationSummary control to display the first type's errors, and a label for the second's type errors. I tried to test it with the JavaScript disabled and it worked fine, then I turned the JS back on and *Here comes the problem: *
I first try to raise an error on the db layer (by entering a name that already exists) and the error is displayed on the label and everything is good .. now I try to remove the name from the textbox and press the submit so I could raise a required field validator error the expected output is "This field is required" only but what I see is "the name already exists" and "This field is required".
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When this javascript dialog HTML button is clicked, it will call the MS AJAX web service call by the javascript: eval() method. And this MS AJAX web service call is dynamically generated. So the code is like this:
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eval(serviceCall);
//use eval to trigger the MS AJAX web service call
As you may all know, after complete the MS AJAX web service, you can define a callback function to handle the completion:
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eval($(userContext[0]).val()); [code]...
As you can see, this is how I bound the asp:button (i.e. btnSelectUser) 's Click Event to the asp:hiddenfield using the GetPostBackEventReference, and set the registerForEventValidation argument to false. I have also tried to use different ValidationGroup and set the CausesValidation to false.In summarize, I bound the asp:button's Click PostBackEventReference(i.e. __doPostback(....)) to the asp:hidden field's Value attribute, and using javascript eval() to eval this hidden field's value in order to manually trigger postback.
p.s. the btnSelectUser is an asp:button control and used to call out the javascript modal dialog.
Ok, here is the Problem:In the same page, there is some asp:validator, e.g. and , and of coz, when the page run into error, this validator and callout will display to the user. e.g. When the user didn't fill in anything and submit the form, the ValidatorCalloutExtender will display a ballon and tell the user. Imagine one of this ballon/validatorCalloutExtender come out and on top of your screen at the moment.
Then you click the btnSelectUser (asp:button) to show the javascript modal dialog, and in the dialog, you Add some users, and once you hit the SELECT button inside this modal dialog, a MS AJAX web service is trigger as mentioned above, and once this web service is complete, it eval() the asp:hidden field's value (i.e. __doPostback(...))......and do the postback manually.
However, because of the validatorCalloutExtender ballon has display, it somehow cannot trigger the postback in this way, but when I close the ballon/validatorCalloutExtender, the manual postback using eval() is just working fine. Even more strange is that, when the ballon is displayed, the first time I click the SELECT button inside this modal dialog it doesn't fire the postback, however, if I do the same thing again (i.e. open up the javascript dialog, and choose some users, then click the SELECT button again). It able to do the manual postback....and I don't understand why the first time doesn't work.
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Here is my code
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This is how I've manipulated some of the page contents (this just prevents submission):
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[code]...
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<script type="text/javascript">
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//<![CDATA[
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[code]...
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<script type="text/JavaScript">
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[Code]....
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