I have a async file upload control and I am doing client side validation for Image."OnClientuploadstarted" I am doing the client side validation.My validation is working fine but my problem is that the file upload control text box goes green (i.e file is loaded on the server) even if the validation fails which is I dont want.What I want is when the client side validation fails the file does not gets loaded on the server and the Async file upload textbox does not goes green.I have goggled but have not found a suitable solution.
I am using ASP.NET's server-side validation. In the page_load event I'm calling Page.Validate(), and if Page.IsValid is not true I'm then polling the controls to figure out which ones are not valid, and then determining what actions to take.It would be much easier if each control would raise an event as validation fails, allowing me to take action for that particular control. I'm very much a naive programmer when it comes to validation, but is there a way to extend these controls so that a validation error raises an event?
Is this possible? I can't figure out if there is a way to write code behind that only fires if this particular validator control fails validation or something. I know I can write code that runs when the entire page is not valid. But I just want this code to run when this validator returns invalid. Hope this makes sense.
i'm experiencing some weird problem and cannot find any solution on how to fix it.... i have this function where user can update their email address, password etc. i put all this into an accordion. all works perfectly fine until i added in some validation. the validation works fine to. the problem is, now none of my button works. as in it does not trigger any action..
The following message appears in our log:The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request. alot has been written about this subject. However, I cannot reproduce this behavior, and I only find a couple thousand errors per day in the logs; so it's probably isn't that obvious.
The page in question has an UpdatePanel and loads one of three usercontrols depending on the querystring.Is there any known issue with some clients, or any other possible explanation?
For this web page, The img is now showing up in print preview and is printing. From FireFox, the shrik-to-fit option works great in preview and print out they look perfect. The problem is with IE 8 (havne't tested other version) The image and other stuff comes out fine. The section that consist of panel and the AjaxCtrl:TabContainerer, the Active Tab with its text content are shrunk to like 60% from the right edge of the paper. The fonts are very small and readable. I tried playing with the scale percentage in the print preview of IE but it increase size on all the content and not just the AjaxCtrl:TabContainerer part.
I have got a label that displays the result of the last action (ie "Success - Record Upload") I also have a Validation Summary and when validation fails i want to clear the label so it no longer displays the result of the last action.
I have a page where user can create their account. I have several validation controls on the page.When user clicks submit button the message box pops up with appropriate messges(as configured in validation summary). But once users clicks the OK button, then the form submits. Ideally it shouldn't do it?
We're running a fairly large site, and a lot of our visitors have started using their Android based cellphones to visit the site. However when they try to login, we get an Event Validation error:
Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
Does anyone know of a way to fix this, without disabling Event validation entirely ?
It isn't every single time they visit, but it is often enough that it's a problem.
Also we never get these on PC-based browsers (IE, FF, Chrome, Safari, Opera, etc.)
The page this happens on has no updatepanels, no custom __doPostback code, etc. It's pretty much vanilla with a simple LinkButton that causes the postback.
Also this error occurs on a bunch of other pages as well (Just found out about that now), so I doubt it's a lone design fault.
How do I setup the ModalPopupExtender to not show when the validation on the page fails? I have a RequiredFieldValidator on a textbox. On Submit, I would like to show the ModalPopupExtender ONLY if validation is successful.
I have been asked to display tooltips instead of plain text when form validation fails. We are currently using asp.net MVC 3 data annotation validators to display validation error messages. I am still fairly new to MVC and I have spent hours online looking for a clean solution
I'm using the ASP.NET login control and I'm displaying a jQuery throbber when the submit button is clicked. This works fine, but the throbber is visible if client side validation fails and the button is invisible, so the user cannot re-submit the form. How do I hide the throbber if client side validation fails?
Line 44, Column 69: there is no attribute "AlternateText" You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash. I can't figure this out.