C# - Conditional Validation Does Not Work?
May 28, 2010
I have an ASP.NET web app (with C#). In it I have a form with several fields and validators. For one of the validators I only need to validate when:
a certain textbox is empty and a certain record does not exist in the database (this is already handled).
I know I can't enable/disable the validator on page_load because something might be entered into that textbox. I also tried the following in the onclick event of the submit button but it didn't seem to work:
Validator1.Enabled = true;
Validator1.Validate();
I also tried Page.Validate() but that didn't work either...
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Similar Messages:
Mar 23, 2010
We're trying to get a conditional attribute to work, case in point, there's a boolean (checkbox) that if checked, its related text is required. So, ideally we'd have something like ...
public bool Provision { get; set; }
[ConditionalRequirement(IsNeededWhenTrue = Provision)]
public string ProvisionText { get; set; }
Is this even possible?
Alternate idea (not as elegant?)
public bool Provision2 { get; set; }
[PropertyRequired(RequiredBooleanPropertyName = "Provision2")]
public string Provision2Text { get; set; }
I'd hate to use the magic string method .
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Sep 30, 2010
Is there a way to disable request validation on an action without having to add the line <httpRuntime requestValidationMode="2.0"/> to Web.config? I'm currently posting XML to a controller action and get the "A potentially dangerous Request.Form value..." error. Is disabling request validation the only way to get the post to work, or is there some way I can intercept and encode the value that contains XML between the view and the controller action?
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Feb 25, 2010
This might be confusing but ill try to explain the best as i can. I have a gridview that get the data from datatable. This is simulation my grid view.
key data
1 data1
2 data2
2. data2
2. data2
3. data3
3. data3
what i want is make some conditional statement, when value "key" is changed i want to add empty row. so its suppose to be looks like this as result.
key data
1 data1
EMPTY ROW
2 data2
2. data2
2. data2
EMPTY ROW
3. data3
3. data3
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Jul 29, 2010
[Code]....
I have been playing with mvc for a few months now and one of the best things I thought was when there is validation errors the UPDATEMODEL method in controller is smart enough to automatically add errors to model state and return the view back to the input page with data entered and error message. Here is where I got a question - how does the controller put back the data that I entered initally? I looked for model, request and response object and none of them have the (invalid) data I entered. Here is an example of my general coding that I do:
[code]...
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Sep 29, 2010
I have the following textbox with validation:
<asp:TextBox ID="txtInput" runat="server" Width="80px"
CausesValidation="True"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredValidator" runat="server"
ControlToValidate="txtInput"
Display="None"
ErrorMessage="Bitte füllen Sie dieses Feld aus"
Enabled="false" />
<asp:RegularExpressionValidator ID="RegularExpressionValidator" runat="server"
ControlToValidate="txtInput"
ValidationExpression="[0-9]{1}(d)*"
Display="None"
ErrorMessage="Bitte geben Sie eine Zahl ein"
Enabled="false" />
<asp:ValidatorCalloutExtender ID="ValidatorCalloutExtender1" runat="server"
TargetControlID="RequiredValidator" />
<asp:ValidatorCalloutExtender ID="ValidatorCalloutExtender2" runat="server"
TargetControlID="RegularExpressionValidator" />
If I click on a button on this page (CausesValidation is set to true) then the control validates properly.
But when I put the textbox and its associated validators and extenders not directly on the page, but instead into a usercontrol then the validation-popup doesn't show anymore. It still seems to validate, because the action for the button is not triggered when the input is invalid.
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Jan 17, 2011
I don't know what the problem is a get the message object required??
[Code]....
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Aug 5, 2010
I'm currently developping an application using MVC2 and Globalization (fr and de). I'm creating a form who use DataAnnotation on the model for validation, with localized error messages in my dataAnnotations.
Here is the trick :
I have two <input /> :
One for a required date (example : 12/05/2001) wich is a DateTime field in the model :
[Code]....
One for an optionnal hour (example : 22:30) wich is a DateTime? :
[Code]....
Erreur and LibellesSinistre are my ressources files.
I got two problems :
I can enter a date in my hour field and an hour in my date field.My error messages aren't localized.
Do I need a trick or something to make it work ?
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Jun 9, 2010
I had problem with my validation i am using regular expression for my zip code it was accepting 5 digits when ever among 5 digits i am entering zero(0) as first digit it was nt accepting any reason & solution regarding to accept first digit has zero(0) my regular Expression below
<asp:RegularExpressionValidator ID="regZip" runat="server" ControlToValidate="txtZip"
Display="None" ErrorMessage="Zip accepts only numerics" ValidationExpression="^[0-9s..]+$"
Enabled="false"></asp:RegularExpressionValidator> in database for this column
Zipcode -Numeric(18,0) any solutions to take first number as zero(0) among five
ddigit numbers.
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Jan 4, 2011
We are investigating using ASP.Net validations for client side validating. Is it possible to get the client side validators to work before an initial postback?
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Feb 1, 2010
I am testing my web site to allow people to navegate despite having the javascript feature disabled but the asp validation control dont work in this mode.
I am working with master pages and I have the the text box I want to validate inside a panel to enable my nextbutton to work like enter like this:
[Code]....
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Apr 2, 2010
What I would like to do is to validate my aspx before showing the confirmation diaglog. After long hours of searching on the Net I came up with this:Some Validation controls with 2 different validation groups (ValidationGroup1 and NoValidation)ValidationSummary control is set to ValidationGroup1 with MessageBox=TrueButton1 is set to ValiationGroup1 (this button is hidden)Button2 is set to ValidationGroup1 with javascript onclick function to click button1.
ConfirmButtonExtender1 with TargetControlID=button1
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Feb 15, 2011
Using MVC 3 RTM and MvcContrib/FluentHtml version 3.0.51.0, I can't get the jQuery client side validation to work. Server side validation works fine, and returns showing the correct validation summary, etc. But the form post always tries to hit the server-side post controller action when it should have stopped on the client side to display the validation error.
I tried replacing the MvcContrib ModelViewPage with the default Mvc ViewPage and it still didn't work.
Here's my code:
Web.config has:
[Code]....
Site.Master page has:
[Code]....
View page inherits from MvcContrib's ModelViewPage:Here's the view page:
[Code]....
Here's the controller post action:
[Code]....
Here's the entity object with the Required field:
[Code]....
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Oct 14, 2010
I have set up my buddy class with validators. However I only want the validators to fire of the associated fields are used in that particular screen. When I split them across 2 screens I find my validation doesn't work. How do I fix this? I have had to remove the validation from some properties in order to get it to work on one screen;See the class here;#region "Buddy class" for validation
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Mar 24, 2011
if i turn off the java script in any browser will validation controls will work and if yes then how to work by disabling the java script
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Jun 6, 2010
well the thing i am doing is that and returning a formviewdal ,there is a page refresh while performing validation ( it work fine when i return only modal ,but is not working
when i am returning formviewmodal i.e doing a page refresh) ,What might be wrong. Review the create below as it is returning viewmodal class
My View
[Code]....
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Jun 15, 2010
I have studied Phil Haack's post [URL]about custom validation, however, I can not get this to work for my case. I need something like the "PropertiesMustMatch" validator in a default MVC2 project generated by Visual Studio.
None of my custom javascript gets called. I am registering the custom adapter in Application_Start using DataAnnotationsModelValidatorProvider.RegisterAdapter(....). In the DataAnnotationsModelValidator derived class, GetClientValidationRuls is never even called.
What is going on here? Maybe this type of validation where your validation attribute has to be applied to a class, not a propety, does not yet work with the RTM release of Visual Studio 2010.
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Nov 8, 2010
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..
below are my codes
[Code]....
[Code]....
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Nov 23, 2010
I have a FileUpload Control on the page with validation and it is working smoothly.
Later there is an important demand to have it partially updated so we enclose it with UpdatePanel.
Then problem comes up when user browse file and press upload button, no file is uploaded.
Is it we cannot do partial rendering with FileUploader ?
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Jun 14, 2010
I can't seem to be able to get any validation controls to work with checkbox lists. I tried adding a custom validator but just get an error message. Are there any work around because I would like to add custom validation and required validators?
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Jan 27, 2010
In my view data class I have a List.
[Code]....
I have all the properties of the class Person as required using Data Annotations.
[Code]....
In the View I loop the List like this:
[Code]....
Generated HTML:
[Code]....
Result:
Does not work at all.
Other things I've tried:
Tried using these HTML Helper methods instead:
[Code]....
Generated output:
[Code]....
Result:
Interestingly, when I trigger a validation on the first textbox, it fires simultaneously for all of the textboxes. The rest of the textboxes do not trigger validation at all.
Looking at the generated id and names for the textboxes and their corresponding error text span element, they areall identical.
Anyone figure out how to use Client Validation with Data Annotations with a List in the view data,
supporting Model Binding?
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Aug 5, 2010
i want to ask question i have simple regular expression pattern like "[ABC]" when i add it to me class
[Code]....
it is working good when i add A , B Or C as i need.but if i copy this pattern and paste it in my regular expression validator control it is not working
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Feb 14, 2010
to explain my problem as simple as i can i have made the following page each textbox is a required field. when i enter valid data in the text box and click the button everything is fine. the problem i am having is that after this button click > i empty out the last 2 textboxes > click the button > the required field validation is not thrown.
the autopostback property being set to true is a must in this case.
[Code]....
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Mar 10, 2010
I got a view that uses the ajax.beginform tag.This works great but if I want to do some validation to the data and then return a error message to the page it doesnt work for me.Here my code :
[Code]....
And the actionResult :
[Code]....
[Code]....
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Jan 9, 2013
this is my compelete code for validation type and display image with AsyncFileUplaodI'd like to upload only png, jpg, gifI can upload Image and have its preview successfullyand when try to upload another type It prevents and fortunately I can see this message"Upload a valid file with extension png, jpg, gif."but UnfortunatelyIt shows a message box with this errotUnhandled Exception: this._innerTB is null what's my mistake?
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Validation in AsyncFileUpload Example</title>
[code].....
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