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.
Any idea how I can get around this problem?
On your RequiredFieldValidator if you use both the ErrorMessage and Text attributes the value of ErrorMessage will appear in the ValidationSummary, while the value of Text will appear at the location of the RequiredFieldValidator.
E.g.:
<RequiredFieldValidator
ErrorMessage="This will appear in the summary at the bottom of the page."
Text="This will appear in the middle of the page."
.../>
So to hide the ErrorMessage from the summary simply set it to an empty string:
ErrorMessage=""
Have you set the CausesValidation property on your button?
What is your OnClientClick method doing?
As I understand it you are trying to reinvent the wheel by implementing you own functionality to display the validation message. You should use a ValidationSummary control to display the message to the user. And you should also remove your custom OnClientClick function.
Related
I have a textbox in which user enters the jobnumber. I am checking if this number exists in the database, by using a server side CustomValidator. I want this CustomValidator to be called before anything else in the page. Right now it is firing the CustomValidator only if all the RequiredFieldValidators are validated to true. And the validation is happening on button click.
Is it possible to validate CustomValidator before the other RequiredFieldValidators? Also, is there a way in which, as soon as the jobnumber is entered into the textbox, we can validate the number and display an error if it is invalid, immediately and not wait until the button click?
If you're using a CustomValidator, then set the ValidateEmptyText property to true and add code to your validation method to check if the value is populated. Then you don't need the RequiredFieldValidator at all. Just make sure you have a JavaScript function to do the validation client-side and set the ClientValidationFunction property.
To trigger the validation whenever you want , you can use the method described here (although I've never tried it): http://fczaja.blogspot.ca/2009/07/aspnet-how-to-trigger-client-side.html
function Validate()
{
// Get the specific validator element
var validator = document.getElementById('RequiredFieldValidator1');
// Validate chosen validator
ValidatorValidate(validator);
// Update validation summary for chosen validation group
ValidatorUpdateIsValid();
ValidationSummaryOnSubmit(validationGroup);
}
Then you can use that in the keypress event of the textbox.
I know there are many questions similar to this but I've been unable to find one that fits my situation.
I have a basic form with a few TextBoxes and RequiredFieldValidators and an ASP Button to submit the form. I have set the submit button CausesValidation="false" because I want to perform some functionality in the event that the form is not valid. All validators have an ErrorMessage set and all validators, and the summary have the ValidationGroup="Registration" set. The ValidationGroup is on the submit button as well but I don't know if that makes any difference when CausesValidation is false.
In the button click event I am calling
Page.Validate("Registration");
if (!IsValid)
{
}
I have set breakpoints and IsValid is definitely false and it gets into that code block, but the ValidationSummary doesn't show the error messages from the Validators. I can't figure out why.
The ValidationSummary is defined as follows
<asp:ValidationSummary CssClass="validatorSummary" DisplayMode="BulletList" ID="valSummary"
runat="server" EnableViewState="false" EnableClientScript="false" ValidationGroup="Registration" HeaderText="test" />
Is there anything that could cause this kind of behaviour? I feel it must be something very simple I'm missing here. Any help would be much appreciated.
I need help in my asp.net project. I have a "Cancel" button on my page. But it does not work. I have a onclick-function that refers it to a specific page, but when i press it, it askes for validation in the boxes on that page. Whats the problem?
Just add this attribute
CausesValidation="False"
to you Cancel button server side control. This way when the cancel button gets clicked, it will not force validation for the values of your form and you will get what you want.
For further documentation on how this works, please refer to this link:
How to: Disable Validation for ASP.NET Server Controls
I'm developing a web application. At first I use validation control to do required field validation, later I need to add some custom function to do the validation but still need required field validation. The problem is I found after I add onclientcliek event of the submit button, the previous validation control does not fired. Is there a way that could let both the validation control and my javascript function work before submit the form? Thank you for your time.
Use CustomValidator Control. It is pretty easy to configure your own Client-side Validation. More info and an example here. Both validation controls can then work side by side.
make sure you have an ID on your submit button and try and put something like this in your document.ready function:
$("#YourSubmitButtonId").click(function(){
yourValidationFunction();
return false;
});
I'm using a bunch of different asp.net validation controls on a web form. Some of these have their Text property set to things like "* Error" or "You missed these fields".
However, a few of the CustomValidator controls have blank Text properties. I left them blank on purpose because I'm adding the ErrorMessage dynamically depending on which case fails. (A CustomValidator may have many different conditions upon which I set args.IsValid = false)
When an error occurs, the ErrorMessage property that I set is shown both in the ValidationSummary and inside the Validator control. I don't want that. I want to be able to just show the ErrorMessage in the ValidationSummary and not in the BaseValidator.Text property.
My first try was to set the Text property to be a space " ". That didn't work.
What I implemented (for now) is a period that is shown as the same color of the background. It's a hack - and I don't like it. Heck, maybe that's why I'm here!
Here's the code:
<asp:CustomValidator ID="StackOverflowValidator" runat="server"
Text="."
CssClass="validatorstyle"
Display="Dynamic"
OnServerValidate="validate_AllowedToDoSomething"
ValidationGroup="MainGroup" />
<asp:ValidationSummary ID="mainGroupValidationSummary" runat="server"
ValidationGroup="MainGroup"
DisplayMode="BulletList"
HeaderText="There was an error in saving. Please check the following:" />
Inside validate_AllowedToDoSomething I call:
StackOverflowValidator.ErrorMessage = "Custom Error Message #1";
args.IsValid = false;
return;
What I get is "Custom Error Message #1" twice on the web form. Thanks in advance!
Just set display="none" instead of "dynamic" on the BaseValidator, and that should solve it.