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.
View 4 RepliesIn Edit mode, when I check unchecked items, the Update works correctly, but when I clear the checked items, the items are still true in the database. My textboxes and dropdown lists all work as expected. The related code is below. Why won't the cleared checkboxes write to the db? When I set a breakpoint in the ContactRecordOnUpdating method, the values for the unchecked checkboxes are true (which is undoubtedly why they are written to the db that way).
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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?
View 1 RepliesCan anyone tell me how to re-display a form when validation fails, i'm having a problem in that when i submit an empty form, the whole ascx file is returned with textbox and button etc.
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Let's say that I have the following HTML for a text box on an ASP.NET page:
<div class="myClass">
<asp:TextBox ID="txtMyTextBox" runat="server"></asp:TextBox>
</div>
It is easy enough to add a required field validator to this page like this.
<asp:RequiredFieldValidator ID="valMyTextBox" runat="server" ControlToValidate="txtMyTextBox" ErrorMessage="My Text Box is required."></asp:RequiredFieldValidator>
But I need to modify the HTML slightly if this text box fails validation. I need to add a CSS class to the DIV. So if the user leaves this field blank I need the HTML to look like this:
<div class="myClass error">
<asp:TextBox ID="txtMyTextBox" runat="server"></asp:TextBox>
</div>
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 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?
View 5 RepliesI'm writing a small web application in c# and i'm running into a small problem.
Basically, on page_load() my backend MySQL db is queried to bring back the user data, and that is then inserted into the textbox controls as below:
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Now the problem occurs when the RequiredFieldValidator kicks in. In my form processing function, I call Page.IsValid(), it fails and displays the required message next to the required fields.
I was wondering if there is a workaround for this, or a better way to go about what i'm trying to do.
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.
when I submit the buttion i got the validation error at that time i want my page up , i write a jquery validation code
View 1 RepliesI use validation control in my page when users click on button if they don't enter data in textboxs it show massage in validation control
I want In addition to using validation control when users click on button to insert data it show error massage thar show EX: "please complete your form"
How I can do it ?
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?
I am using mvc 3 unobtrusive concept for validation . It is working fine at client/server side.The problem is that it wont clear until I hit the server again.
Is there any extra code i have to write to clear validation summary ?
What is the property used to clear image in the image field..
View 2 RepliesWhat is the best way to debug a CompareValidator that always fails the validation? Is there any way to see what the values are that it's comparing to maybe get a clue as to what's going wrong?
View 2 RepliesI am uploading a JPEG image in an ASP.NET MVC web site.
The model validation fails in IE, but passes in Firefox, when I try to check the mime type of the
HttpPostedBaseFile.
So I debuged it and I found that when using Firefox the Mime type is "image/jpeg" as expected.
When using IE8 the mime type is "image/pjpeg".
Don't say that Microsoft invented a new Mime Type of JPeg images?
I am using Master/Content pages. Master page has <asp:ScripManager .... />. Here is how things are set up
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1st Issue
When validation fails, button still postback (why ? ).
2nd issue
When validation fails, button still postback but then TabContainer doesn't appear (empty page is displayed, what happened to the tabs ?)
When the page has no errors, button postback the page and then every tab appears as supposed to be.
I am using VS2010 .NET 4.0.
I'm working on an application form for a website which implements ASP.NET validation (including client side).
I have a requirement to display a message at the bottom of the page if the client validation fails. Something along the lines of "Please go back and check your answers".
The problem is, the submit button's OnClientClick event obviously fires before the client validation.
I have a textfield () in my homepage for a searchstring. Normaly I have a text like "enter here to searach..." in it. Now I will clear the box from the text when a user click into it.
View 4 RepliesI'm trying to prevent data from loading on the page when its needed.
Currently, I check the IsPostBack bool to prevent loading data in my user controls which allows the data to be loaded when the page is initially requested.
However, if my page fails validation and the page is sent back to the user with error messages, my user controls no longer have data in them because the initial request was a postback.
One solution is to have a flag in every user control (IsFailedPostBack) to force them to reload their data. Is there a better way?
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.)
EDIT:
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.
View 2 RepliesI 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
View 1 RepliesI've got an ASP.NET webform with asp:TextBox and asp:RequiredFieldValidator at the bottom of the page. If client side validation fails on form submit - the page scrolls all the way up.
I'd like to maintain the scroll position on failed client-side validation.
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?
View 2 RepliesI have an CustomViewModel that is composed of three layers of objects.
The first one is to store and populate lists to be used in dropdowns.
The second one is to store additional propperties that I want.
And the third one is the model itself.
I create the view using View(new Layer(model))
And at the post i have ActionResult .... (Container container)
I made this architecture because i was having a lot of problems with model binder and enums...
So when i post to the form and the ModelBinder checks the validation attributes, the IsValid operation at the attribute X applied to the model class has its parameter value as null.
This behavior doesn't happen if I Just use the simple model to create and post the view.
What I have to do to get this work ?
I made a few changes to the AccountController to use it as sample here, here is the code:
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Just change the register page to inherits from RegisterModelLayer.
When I post, the value parameter at the IsValid function at the PropertiesMustMatchAttribute class is null;
As a consequence i can't validate and get an null exception maybe.