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• WPF Validation in an ElementHost control

  - by Jon Mitchell

  I've got a WinForms form that contains an ElementHost control (which contains a WPF UserControl) and a Save button. In the WPF UserControl I've got a text box with some validation on it. Something like this... <TextBox Name="txtSomething" ToolTip="{Binding ElementName=txtSomething, Path=(Validation.Errors).[0].ErrorContent}"> <Binding NotifyOnValidationError="True" Path="Something"> <Binding.ValidationRules> <commonWPF:DecimalRangeRule Max="1" Min="0" /> </Binding.ValidationRules> </Binding> </TextBox> This all works fine. What I want to do however, is disable the Save button while the form is in an invalid state. Any help would be greatly appreciated.

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• Changing error message for datatype validation?

  - by Matthias

  Hey guys, I've a small question on ASP.NET MVC 2. I'm using Data Annotations on my Presentation Model and its model binder per default. But one step back, I want to do the most elementary thing: validation of the data type. Let's say I have an "int ID" on my model and want to edit the according entity in my view. If I enter something wrong like "foo", then I get a model error back, but the validation message is on English. I want to have this message in other languages, too. How can I do this? I remember that in MVC 1 I've written a custom model binder which checks the data types, but that's not what I want to do (at least not in MVC 2). Thus I hope there is a better way... Thanks, Matthias

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• Using jQuery for client side validation in MVC2 RTM

  - by tigermain

  Scott Gu's tutorial on Model validation gets us all set up with the MS client side validation using the following scripts: <script src="../../Scripts/jquery.validate.min.js" type="text/javascript"></script> <script src="../../Scripts/MicrosoftMvcValidation.js" type="text/javascript"></script> However I've seen various posts allowing us to utilise jQuery instead with the following code: <script src="https://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.min.js" type="text/javascript"></script> <script src="https://ajax.microsoft.com/ajax/jQuery.Validate/1.6/jQuery.Validate.min.js" type="text/javascript"></script> <script src="<%= Url.Content("~/scripts/MicrosoftMvcJQueryValidation.js") %>" type="text/javascript"></script> However MicrosoftMvcJQueryValidation.js does not ship with the solution and from what I read it should be part of the Futures pack which is no longer available on CodePlex. I managed to find a version alongside jQuery 1.3.2 but it does not work. What is the forward going solution!?

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• mvc2 validation problem (ambiguous reference between model and models)

  - by ile

  I followed instructions for mvc validation but I can't manage to solve this problem.... This is linq to sql model: I set Entity namespace to be CMS.Model If I try to declare partial class Article in Portal.Models namespace: public partial class Article { .... } Then, after using Article article somewhere in code I get following error: 'Article' is an ambiguous reference between 'Portal.Models.Article' and 'CMS.Model.Article' Portal is project name and CMS is area.... I followed these instructions I aslo created NerdDinner from scratch and in that example validation works. I can't figure out what am I doing wrong... someone noticed my mistake? Is it related with giving name to Entity namespace (in tutorial they used default one) Thanks in advance! PS I'd like to note that I'm c# newbie so I'm not really familiar with these partial classes

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• how to prevent white spaces in a regular expression regex validation

  - by Rees

  i am completely new to regular expressions and am trying to create a regular expression in flex for a validation. using a regular expression, i am going to validate that the user input does NOT contain any white-space and consists of only characters and digits... starting with digit. so far i have: expression="[A-Za-z][A-Za-z0-9]*" this correctly checks for user input to start with a character followed by a possible digit, but this does not check if there is white space...(in my tests if user input has a space this input will pass through validation - this is not desired) can someone tell me how i can modify this expression to ensure that user input with whitespace is flagged as invalid?

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• Excel Data List Validation in Powershell

  - by idazuwaika

  Hi, I have a range named "STATE". I want to set data validation in range ("A1") to only take value within this range using Powershell. Below is what I have tried. Does not work. I dont know what to put as 4th and 5th parameters. The first 3 are Excel constants equivalent to xlValidateList, xlValidAlertStop and xlBetween respectively. $ws.Range("A1").Validation.Add(3, 1, 1, "=STATE", 0) Please help. Thanks.

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• Rules: Client-Side validation vs. Server-Side validation?

  - by Stustu

  Are there are any rules for when to use Client-Side validation and when to use Server-Side?

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• PHP form validation question?

  - by GeNx

  I have a form that validates the email address and I want to be able to place echo '<p class="error">Please enter a valid email address!</p>'; anywhere on the web page without having to put the validation process within the html? Or should I include the validation process in the HTML form? Here is the php code. if (preg_match ('/^[\w.-]+@[\w.-]+\.[A-Za-z]{2,6}$/', $_POST['email'])) { $email = mysqli_real_escape_string($mysqli, strip_tags($_POST['email'])); } else { echo '<p class="error">Please enter a valid email address!</p>'; }

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• Suspend file validation on Zend Framework

  - by dimitris mistriotis

  Hi, Currently on my application I have a form where I ask the user to upload an image file to be used as a logo. I want to allow the user to reset that to nothing by supplying no file (by just pressing the upload button from the browser). In this scenario the only thing left is to suspend file validation when no file is included. Currently I get the *self::NO_FILE* error from the *Zend_Validate_File_Upload* class. Is there any way to suspend the validation so that nothing will be checked if no file has been provided?

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• How can Request Validation be disabled for HttpHandlers?

  - by Mun

  Is it possible to disable request validation for HttpHandlers? A bit of background - I've got an ASP.NET web application using an HttpHandler to receive the payment response from WorldPay. The IIS logs show that the handler is being called correctly from WorldPay, but the code inside the handler is never called. If I create a physical ASPX page and set ValidateRequest=false in the header, and put the same code in the Page_Load method, the code is called without any problems. This solves the problem, though I'd prefer to stick with using an HttpHandler for this as it's better suited for this type of functionality, rather than having an empty ASPX page, though this is dependent on being able to disable request validation. The web application is using ASP.NET 2.0 and the server is IIS6.

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• POST a form in an iframe.

  - by Stavros Korokithakis

  I would like to POST a form in an iframe, generated like so: My JS loads an iframe inside the page, adds a form to the iframe and submits the form. What I would like to happen is the iframe to load the result of that request. So, I would effectively like to post a form and render the result inside the iframe, without touching the parent (apart from putting the iframe up for display in the first place). I am using the code from this answer: http://stackoverflow.com/questions/133925/javascript-post-request-like-a-form-submit/134003#134003 but I can't get it to not reload the parent. I post the form, and instead of the iframe refreshing, the entire parent refreshes. I don't know why that is, since the url it's posting to is different and would at least redirect there. Can anyone help me with this problem? I just want a post inside an iframe and only within the iframe, basically. EDIT: After some more research, apparently the form is not being created properly. I'm using document.createElement("form") and then document.getElementById("my_iframe_id").appendChild(form) to append it, but it does not seem to be working correctly.

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• Dynamic data validation in ASP.NET MVC

  - by user252160

  I've recently read about the model validation capabilities of ASP.NET MVC which are all very cool until a certain point. What happens if the application doesn't know the data that it works with because it is all stored in DB and built together at runtime. Just like in Drupal, I'd like to be able to define custom types at runtime, and assign runtime validation rules as well. Obviously, the idea of assigning attributes to well established models is now gone. What else could be done ? I am thinking in terms of rules being stored as JSON objects in the DB fields or something like that.

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• Good input validation loop using cin - C++

  - by Alex

  Hi there, I'm in my second OOP class, and my first class was taught in C#, so I'm new to C++ and currently I am practicing input validation using cin. So here's my question: Is this loop I constructed a pretty good way of validating input? Or is there a more common/accepted way of doing it? Thanks! Code: int taxableIncome; int error; // input validation loop do { error = 0; cout << "Please enter in your taxable income: "; cin >> taxableIncome; if (cin.fail()) { cout << "Please enter a valid integer" << endl; error = 1; cin.clear(); cin.ignore(80, '\n'); } }while(error == 1);

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• jquery form validation

  - by kalpaitch

  I am using jquery for a quick and easy form validation My forms use the input's default value as a label and I have a little onfocus and onblur javascript function to show and hide this when the user starts to type: <input name='fnameREG' type='text' id='fnameREG' value='first name' size='70' onfocus='clearInput(this)' onblur='clearInput(this)' /> <input name='lnameREG' type='text' id='lnameREG' value='last name' size='70' onfocus='clearInput(this)' onblur='clearInput(this)' /> My issue with the validation is that when the submit button is clicked the pluggin thinks that all the fields are set because they have a default value. I looked but I couldn't find a supplied method to get round this. Thanks!

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• Is it possible to group validation?

  - by lambdabutz

  I am using a lot of my own validation methods to compare the data from one association to the other. I've noticed that I'm constantly checking that my associations aren't nil before trying to call anything on them, but I am also validating their presence, and so I feel that my nil checks are redundant. Here's an example: class House < ActiveRecord::Base has_one :enterance, :class => Door has_one :exit, :class => Door validates_presence_of :enterance, :exit validate :not_a_fire_hazard def not_a_fire_hazard if enterance && exit && enterance.location != exit.location errors.add_to_base('If there is a fire you will most likely die') return false end end end I feel like I am repeating myself by checking the existence of enterance and exit within my own validation. Is there a more "The Rails Way" to do this?

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• Validation errors from Google App Engine Logout link

  - by goggin13

  I am making a web page using the Google App Engine. I am validating my pages, and found that the logout link that is generated by the call to the users api (in python) users.create_logout_url(request.uri) does not validate as XHTML 1.0 Strict. The href in the anchor tag looks like this: /_ah/login?continue=http%3A//localhost%3A8080/&action=Logout Including a link with this anchor text throws three different validation errors: *general entity "action" not defined and no default entity *reference to entity "action" for which no system identifier could be generated *EntityRef: expecting ';' Here is a dummy page with the anchor tag in it, if you want to try it on w3c validator.Dummy Page. The logout link wont work, but you can see how the page is valid without it, but the actual text inside the href tag breaks the validation. Any thoughts on whats going on? Thank you!

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• ASP.NET client side validation with dataannotations - javascript minimumlength zero

  - by Kordonme

  Hi! I'm doing client side validation on a project I'm working on. Everything works, except for the minimumlength property of the StringLength attribute (it works when submitting and a serverside validation is done): [StringLength(50, MinimumLength = 6)] The javascript generated by Html.EnableClientValication(); is the following: // snip {"FieldName":"User.Password","ReplaceValidationMessageContents":true,"ValidationMessageId":"User_Password_validationMessage","ValidationRules":[{"ErrorMessage":"The field Password must be a string with a minimum length of 6 and a maximum length of 50.","ValidationParameters":{"minimumLength":0,"maximumLength":50},"ValidationType":"stringLength"}]}],"FormId":"form0","ReplaceValidationSummary":false}) The important thing is here: {"minimumLength":0,"maximumLength":50} It produces javascript with the wrong minimumproperty. You guys have a hint? Is this a possible bug?

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• Spring 3 MVC : problem with form:errors and bindingresult

  - by Maxime ARNSTAMM

  Hi, I want to validate my inputs but i can't make it work : nothing appear on the page. My project is in java 5, so no JSR303 (@Valid). My only solution, if i'm not mistaken, is to use BindingResult. My controller : @Controller public class MyController { @RequestMapping(method = RequestMethod.POST, value = "myPage.html") public void myHandler(MyForm myForm, BindingResult result, Model model) { result.reject("field1", "error message 1"); } } My jsp : <form:form commandName="myForm" method="post"> <label>Field 1 : </label> <form:input path="field1" /> <form:errors path="field1" /> <input type="submit" value="Post" /> </form:form> What am i missing ? Thanks !

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• JQuery Validation Plugin not working when used on page that includes another page via AJAX

  - by droidy

  We have a long page that contains a bunch of different form elements. One part of the form is called remotely via AJAX and is populated in an empty div. This is the part which JQuery Validation plugin is not working correctly on. We have class="required" on the elements on this page, but they do not show up as required. I'm guessing it's because the Validation plugin is looking for class="required" on our main page, and since the content from the AJAX page is put into the empty div behind the scenes, it's not detected the required fields. Any help is greatly appreciated.

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• CodeIgniter Validation in Library does not accept callback.

  - by Lukas Oppermann

  Hey guys, my problem is the following: I am writing a login library. This library has a function _validation() and this uses the validation library to validate the data. With using normal validation methods it works just fine, but using a callback function just does not work. It is not called. I call it like this. $this->CI->form_validation->set_rules('user', 'Username', 'required|callback__check_user'); The functions name is _check_user and it uses the username _check_user($user). The function itself works fine and I can also call it in the class ($this-_check_user('username')) with a working result. I am guessing, there might be a problem because I am not workin in a controller so I have a CI instance $this-CI instead of just the original instance $this- Does anyone have a clue how to fix this? Thanks in advance.

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• Struts 2 validation

  - by dipsy

  Can anyone please let me know how to check if start date end date in Struts 2 validation.xml

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• JQuery Validation - Wrap offending field in a div.

  - by Samuurai

  Hi, It's my first time using StackOverFlow and first time trying to set up jQuery Validation. It's displaying <label> tags with the error messages as default behaviour, however the way my CSS is set up I need a div to wrap around the offending element and a message display in <p> tags. Without errors, my html looks like this: <div class="grid-26 append-2"> <p class="noMarginBottom"> <label>First Name</label> <div class="jNiceInputWrapper"> <div class="jNiceInputInner"> <input type="text" class="text jNiceInput" name="name"/> </div> </div> </p> <span class="clear"/> </div> And with Errors, it needs to look like this - Note the div with class "error" and the <p> tag. <div class="grid-26 append-2"> <div class="error"> <p>Please write your real name</p> <p class="noMarginBottom"> <label>First Name</label> <div class="jNiceInputWrapper"> <div class="jNiceInputInner"> <input type="text" class="text jNiceInput" name="name"/> </div> </div> </p> <span class="clear"/> </div> </div> My Validation code is very basic. $(document).ready(function(){ $("#contact_form").validate({ rules:{ name: { required: true } } }); }); This is my first venture into jQuery and form validation, so I'll be the first to say "I'm lost!" any help would be greatly appreciated. Thanks.

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• Selecting a form which is in an iframe using jQuery

  - by Khnle

  I have a form inside an iframe which is inside a jQuery UI dialog box. The form contains a file input type. The jQuery UI dialog contains an Upload button. When this button is clicked, I would like to programmatically call the submit method. My question is how I could select the form which is in a iframe using jQuery. The following code should clarify the picture: <div id="upload_file_picker_dlg" title="Upload file"> <iframe id="upload_file_iframe" src="/frame_src_url" frameborder=0 width=100% scrolling=no></iframe> </div> frame_src_url contains: <form action="/UploadTaxTable" enctype="multipart/form-data" method="post" id="upload-form"> <p>Select a file to be uploaded:</p> <p> <input type="file" name="datafile" size="60"> </p> The jQueryUI dialog box javascript code: $('#upload_file_picker_dlg').dialog({ ... buttons: { 'Close': function() { $(this).dialog('close'); }, 'Upload': function() { $('#upload-form').submit(); //question is related to this line $(this).dialog('close'); } }, .... }); From the javascript code snippet above, how can I select the form with id upload-form that is in the iframe whose id is upload_file_iframe ?

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• WPF/C#: Proper implementation for closing/hiding the form while new form is opening

  - by eibhrum

  Hi, I was looking something similar with winforms like // in Form 1 this.Hide(); Form2 form = new Form2(); form.Show // in Form 2 // if button pressed, Form 1 will be displayed, while Form 2 will be Hide. I was trying my luck for FormEventHandler but doesn't know where to start. Any suggestions/ideas?

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• How to set the default error message in mvc2 validation

  - by Lullaby

  Hi How can I change the default error message for required rule validation for example?

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