C# - How To Handle Validation When JavaScript Is Disabled
Apr 4, 2011
I'm using some of the typical ASP.NET's Validation Controls in my website. Now I'm trying to disable the JavaScript in my browser to test my application and of course the Validation Controls no longer works. I think it's best to try to make them work using one of the solutions down here instead of reinvesting the wheel and build a validation layer for the page or my objects -Am I thinking right?-
What do you think of these options and why:
Include in clicked button's event a code to check if the page is valid and if not explicitly call the Page.Validate(); method Check if whether the JavaScript is enabled and if not I should call Page.Validate();
View 3 Replies
Similar Messages:
Mar 24, 2010
i have a menu in my master page, which shows up on all pages. the menu consists of linkbuttons, which don't work when javascript is disabled.
how do i work around it? how common is it that someone's javascript is disabled anyway?
View 1 Replies
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
View 1 Replies
Jul 30, 2010
I am trying to make ONE thing work. The form currently have TWO Textboxes and ONE CustomValidator(connected to the first textbox). I simply want once I enter less than 4 characters in the first Textbox and tab out to the second Textbox and if Javascript is DISABLED then the server side code should stop me. I can achieve what I am trying to do if I use a button but I need to do it in the fashion I am trying decribing because if I have for example 20 textboxes on the form I want the user to see after each data entry that his validation was successful or not. Here is a sample of my code.
[code]....
View 4 Replies
Apr 6, 2010
If a disabled drop-down list is dynamically rendered to the page, it is still possible to use Firebug, or another tool, to tamper with the submitted value, and to remove the "disabled" HTML attribute.
This code:
[code]....
The problem occurs when I use Firebug to remove the "disabled" attribute, and to change the selected option.On submission of the form, and re-creation of the field, the newly generated control has the correct value by the end of OnLoad, but by OnPreRender, it has assumed the identity of the submitted control and has been given the submitted form value.
.NET seems to have no way of detecting the fact that the field was originally created in a disabled state and that the submitted value was faked. This is understandable, as there could be legitimate, client-side functionality that would allow the disabled attribute to be removed.
Is there some way, other than a brute force approach, of detecting that this field's value should not have been changed?
I see the brute force approach as being something crap, like saving the correct value somewhere while still in OnLoad, and restoring the value in the OnPreRender. As some fields have dependencies on others, that would be unacceptable to me.
View 4 Replies
Feb 25, 2010
Can anyone shed some light on why DotNetNuke comes configured with request validation and event validation disabled? They're both off at the web.config level for a default install which seems to be a regressive approach. Are there any sound reasons for this and what is the functional impact on DotNetNuke if they're turned back on?
Obviously appropriate input validation should be happening in code anyway but the native .NET framework behaviour is always a nice fallback.
View 2 Replies
Sep 20, 2010
we are working on one of our site which is having lots of javascript code.but while testing one of our tester has disabled javascript in browser.so in this scenario javascript code is not working properly. So can any one let me know is thr any work around to run javascript code while browser javascript is disabled.
View 1 Replies
Dec 25, 2010
I am using one datalist control for uploading multiple images.I hv used one Asp:FileUplaod Control and one button in one itemtemplate.I am using reqired field validator and regular expression validator for file upload cntrl I am assigning validation group for both of them on ItemDataBound event of my datalist so that each upload cntrl hv same validaton group as required field and regular expression validator.Now what i want to do is - i want to show my error message in validation summary which is right at the top of the page.I want one know how to write javascript that will assign validation group of my control in datalist on which i click ?
View 1 Replies
Mar 28, 2011
I have a user control with a label and a field. I add the user control dynamically to a page at run time. There could be many user controls which are built dynamically from data I get from the data base. The data describes the label name and if the text box should be completed.. ie is it required. I have a submit on the main page which has a validation group.All the validators on the user controls have the same validation group. So far so good I hope.
The user control has a RequiredFieldValidator for the text box and looks all like this. The validator is enabled by default.
<asp:TextBox ID="dfControl" runat="server" Text="" ToolTip="ucsAlphanumericEntryDC" Width="95%" CausesValidation="true"/>
<asp:RequiredFieldValidator ID="rfvContol" runat="server" ErrorMessage="Value is required" EnableClientScript="true"
ValidationGroup="ValidateContols" ControlToValidate="dfControl" Display="Dynamic" Enabled="true"></asp:RequiredFieldValidator>
When I dynamically load the control I check a parameter to tell me if the field is required or not. The paramater is from the database which represents the control that I am about to draw. If the Field NOT a required field I disable the validation in the page_preRender.. also tried it in load.
if (!DisplayRequired)
{
rfvContol.EnableClientScript = false;
rfvContol.Enabled = false;
dfControl.CausesValidation = false;
}
So far so good. This all works on the client side validation for only the user controls with the Display Required set to true, leaving the Validator enabled.however on posting page from a submit button which I have wired to the same validation group as the user controls, I check the IsValid on the submit and if its false I dont save anything. But when the page re-renders on the client.. I have error messages on all the user controls, saying that they are required... even though I disabled some of them that where not required. the View state is default on the control which I assume to be on.
I also tried not redrawing the controls with the validators, by enclosing the code in a if(!IsPostBack)
why the validators fire when they are disabled on the first page load but dont get disabled on the postback.
View 1 Replies
Jun 17, 2010
Using MicrosoftMvcValidation.js, it seems like disabled html elements are validated on the client-side. I am not sure how much sense that makes given that such elements will not be submitted by the form and I probably consider it a bug. (By the way, MicrosoftMvcJQueryValidation.js does not validate disabled elements.)
Is there any way I can disable (pun intended) the validation of disabled elements? E.g., assuming I have a reference to an html element in javascript, is there some way I can "remove" it or disable it from the client-side validation machinery?
View 6 Replies
Mar 11, 2010
Im replying to this post (a few years back now) but your method was one I wanted to use for checking JS on page load.
I uderstand the value of testBox will be changed to yes if JS fires, and codebehind recieves the testBox value of yes.
Ive tried your exmple but its not working like this, what I get is the hidden testBox value NO passed when JS is enabled.
[code].....
View 1 Replies
Oct 12, 2010
I need to redirect to another page when the client script is disabled on the browser.
View 2 Replies
Mar 2, 2010
n a page with textbox control, lets say this textbox is disabled on server side page load.What would happen if a javascript tries to set visibility of the textbox to false ?dit:Can the textbox be hidden by javascript even though it's disabled ?
View 1 Replies
Jul 2, 2010
How to find whether a user has enabled or disabled JavaScript in the browser or the browser does not support JavaScript?
View 5 Replies
Jan 18, 2011
I wanna to change the color of any disabled control to black like in enabled one because of special case, i tried many solutions like make the textbox read only but (i donot want this solution because of some reason of this case) , i use Css file , every thing is changed except the color of the text how to change the color to be more clear .
EDIT:: tested against IE
My CSS:
input[disabled] { border:solid 1px red; background-color:White;color:red !important;font-weight:bold;font-size:medium; }
My .aspx sample::
[code].....
View 1 Replies
Mar 29, 2011
What is the best way to track users on our Asp.net websites if they have there cookie disabled.
I heard about Flash cookies but could not find a good resource to access the flesh cookies using Asp.Net or JavaScript.
Does anyone know a better method?
View 2 Replies
Jul 23, 2011
What should i do if the javascript was disabled on the client browser ?
Should I call the server side ? and how could i do such a thing if it is possible ?
I have a web page, and I am using JQuery ajax, and I'm calling the server side using the webMethod attribute, so what should i do if the client browser disable Javascript ....
View 4 Replies
Mar 5, 2010
If I have a 3 layer web forms application that takes user input, I know I can validate that input using validation controls in the presentation layer. Should I also validate in the business and data layers as well to protect against SQL injection and also issues? What validations should go in each layer?
Another example would be passing a ID to return a record. Should the data layer ensure that the id is valid or should that happen in BLL / UI?
View 6 Replies
Feb 14, 2011
I have two radio buttons that are disabled with javascript when the page loads. RadioButton1 is checked by default. When I click the button to do a postback, the RadioButton1 is no longer checked.
Here's my code sample. The code behind is empty.
<asp:RadioButton ID="RadioButton1" runat="server" GroupName="group" Checked="true"/>
<asp:RadioButton ID="RadioButton2" runat="server" GroupName="group" />
<asp:Button ID="Button1" runat="server" Text="Button"></asp:Button>
<script type="text/javascript">
window.onload = function () {
var RadioButton1 = document.getElementById('<%= RadioButton1.ClientID %>');
var RadioButton2 = document.getElementById('<%= RadioButton2.ClientID %>');
RadioButton1.disabled = true;
RadioButton2.disabled = true;
};
</script>
View 4 Replies
Nov 25, 2010
How do it exactly?
Measuring Page loading when javascript enabled / disabled
View 1 Replies
Dec 15, 2010
I'm trying to disable a link button to prevent the user from submitting several times.
I've seen many questions like this here on SO, most people suggest the following javascript:
button.disabled = true or button.disabled = 'disabled'
Which indeed disables the button (the button is greyed out), but the problem is that it's still clickable, and still submits!!
Here is my stripped down code:
function ValidateButton(button){
// some other code
button.disabled = true;
button.value = 'Processing...';
}
<asp:LinkButton Text="Submit" ID="btnSubmit" runat="server" onclick="btnSubmitRow_Click" OnClientClick="return ValidateButton(this);"/>
Why is the button still clickable, and submits after being disabled ? The button text is still "Submit" not "Processing...', why?
View 5 Replies
Oct 26, 2010
In my application the user uploads three files ( Resume, Cover Letter, Selection Creteria).
I want users not to upload more then 4 MB files, so In my web.confing file I have allowed max of 5 MB. <httpRuntime maxRequestLength="5000"/>. I did this so that I can validate the file and give user a message that they are trying to upload more then 4 MB file.
It all works fine if the user is only uploading resume. But if the user uploads all three files of size 4MB then my validation does not work and it goes to connection time out.
How can i handle the validation to check the file size of all 3 files?
View 2 Replies
Jun 2, 2010
[URL]
I'm using the code the above and running into an error i can't quite figure out. Maybe its something simple or maybe it's something that can't be done. Not sure.
I created a user control (button) that references a javascript file like this:
string url = ResolveClientUrl("./Scripts/main.js");
function SubmitButton_Click(e) {
try {
var src = typeof (event) != 'undefined' ? event.srcElement : e.target;
[Code]....
The error that i am running into is this:
The buttons in the update panel work everytime without any problems. When i click a button in the update panel and then click a button outside the update panel it chockes on this line of the above javascript.
src.aspnet_onclick();
The value of aspnet_click() is 'SubmitButton_Click(e)'. This is incorrect which causes it to choke.
The value should be 'onclick(event)'
For some reason when click the button inside the update panel and then the button outside the update panel causes this javascript error but I am not sure why the aspnet_onclick() is incorrect.
View 1 Replies
Aug 10, 2010
I am in the process of developing a feature rich website with vast use of jQuery. My biggest concern is that I will not be able to reach a percentage of my users because they will not have Java Script enabled or will be using a platform that is not compatible with jquery. I know that I can use a simple java redirect from within the html page itself but this does not seem like a decent resolution to the problem as I would rather the script be run on the server side not from within the html page itself.
Is it possible to configure IIS, Apache, or Linux to run a script that redirects specific browsers, platforms, and settings to another html page before the html request is made? It does not seem sensible for the default index.html page to download initially before a second request is made back to the server for the index1.html page.
I need to redirect certain platforms (IE 6 for example), and browsers with java disabled to a separate website that does not have jQuery functionality.
Here is the site: http://www.intechspecial.com
View 3 Replies
Jul 25, 2010
How can I disable the code behind validation when javascript validation is present? Then if there is no javascript enabled then the code behind validation will do its thing. What I notice is that it's reading the code behind valdiation not the javascript.
View 7 Replies
