Let's say the page TestPage.aspx has two controls. The first control is an address control that has a validation group called "AddressGroup". This group contains several validation controls which are colated in the validation summary on that control. The second control is a credit card control and has a validation group called "CreditCardGroup". It also has several validators and a summary to display the results. To add to the problem, there are some random controls on the page that also have validators which are tied to a third ValidatorSummary control.
When the user presses the "Do it all" button, I would like the page to trigger all three validation groups. The button itself can be tied to a single group or an unlabeled group. It can not be tied to multiple groups as far as I can tell.
The solution is not to extract the validation from the controls as that would deminish the value of having them in seperate controls. Thanks for your thoughts.
Call the Validate method for each validation group individually inside the button's click handler:
bool isValidTest = false;
Validate("AddressGroup");
isValidTest = IsValid;
Validate("CreditCardGroup");
isValidTest &= IsValid;
// etc.
if (!isValidTest) return;
The next problem you may encounter is that the ValidationSummary control is linked to a single validation group. The only way that I've found to display all the error messages for multiple groups (without walking the control tree) is use multiple ValidationSummary controls.
With user controls, you may want to have its Validate method perform validation for all the controls it contains and display its own summary.
Edited to add: The isValidTest variable is not needed. According to the docs:
Note that when you call the Validate
method, the IsValid property reflects
the validity of all groups validated
so far.
Are you talking client side or server side validation? Jamie's answer is spot on for server side, but for client side validation you will probably need to write your own JS function that will trigger validation on all three groups in concert.
Call Page.Validate() on server side it will validate all the validators..
Related
The issue:
I have a single page with two email forms (one <form>, two divs inside this which look like forms to the user). When you submit either form, the C# behind looks at the values of the form and sends them in an email. This works well, and now I want a little validation, but I can't add required attributes to the inputs as the code doesn't know it's two separate "forms" and needs to handle the required attributes separately for each one.
I understand why this issue occurs, but I want to know if there's a way to tell the page to handle the required attributes in groups.
What I've tried: Both "forms" are handled by the code behind, and so need to be run server-side, so separate <form> elements wouldn't work. I have tried nesting the "forms" as <form> elements inside the server-side <form>, which separates the required attributes as desired, but seemingly breaks a number of things and I've read this is generally bad practice anyway.
What I'm not asking: To validate the form in the code behind.
Edit:
David's answer works great to validate groups of textboxes, which is what I needed.
To additionally validate a checkbox, I used javascript. onclientclick we can check if the checkbox is checked AND validate using Page_ClientValidate('validationgroup') and then return true, else return false. onclick is only fired when onclientclick returns true.
use one form with two submit buttons. Use validationgroup to distinguish
http://msdn.microsoft.com/en-us/library/ms227424(v=vs.100).aspx
if you write your own validation function for each submit button it should be possible
<input type='submit' onclick='return validateFirstButton()'/>
To validate checkboxes follow the instructions here:
http://codeclimber.net.nz/archive/2007/07/19/How-to-add-a-required-validator-to-a-CheckBoxList.aspx
Because this derives from BaseValidator you will be able to use groups. Hope this helps
In my windows application i have a tab control with many tabs and sub tab controls also, each and every tab has many field like text boxes and list boxes.
i thought to validate every field by clicking button called "NEXT" before changing to nexttab and if any field fails with validation a message box should pop-up with error message and focus should remain in that field. can any one help me with ur suggestions...
validation requirements are required field and only numeric and alphanumeric...
Thanks in advance!!!!
A good way is to create a derived controls with input area and validation logic. Then, it is matter of enumerating hierarchy of controls and see if they are valid based on validation rules applied.
Another way, is to "attach" validation logic to controls. How? A mapping mechanism or use the "Tag" property.
But isn't it better to validate control using "Validate" event, when user tries to exit the control? That will not allow user to supply bunch of trash and hope it can be saved.
I've a container (RadDockZone - Telerik), and inside it, a textbox field with an "Asp:RequiredFieldValidator", which makes it mandatory. Every time that I work with AJAX operations, the entire container is "reloaded", including the RequiredFieldValidator. This makes the ValidationSummary show the same error message twice, until the page is completely reloaded (I'm using RadAjaxManager to solve the AJAX operations).
So, how can I "don't reload" a specific control (in this case, the RequiredFieldValidator) using C#?
Regards!
If you place the following in page load if(page.Isvalid) the required field validator will be fired once after submitting that form. The message will not be displayed twice.
If you do not include the textbox (or its wrapping containers) in the list of controls updated by the ajax manager, the textbox and the respective required validator should not be updated on ajax requests and the error message should not be visualized.
You should use validation groups. This lets you group all of your validation controls into a group. Then put this same validation group on your submit button and those validation controls will only validate when that particular button is clicked.
Property is assigned on the validation control and button using the ValidationGroup property.
Thomasvdb's suggestion of setting CausesValidation to false also might be a good way to do it.
I have an asp.net form with bunch of sections that can be expanded/collapsed and are normally collapsed. Now, most controls on the form have RequiredFieldValidator or some other validators attached. If the user tries to submit the form with required fields not filled out, for m is not submitted but because most sections are normally collapsed, the user doesn't see the validator text (like exclamation mark on the right of a text box) prompting to fix the error.
What I want to do is for the controls that fail validation, to expand their parent containers so user could see those failed controls, but for that I need to hook up some client sode javascript that woudl execute when client side validation failed. I haven't foudn any way of doing it - validators naturally dont' expose those "validation events" to hookup to. Of course I can create my custom validators but that would mean rewriting (and duplicating functionality) completely all existing asp.net validators which sounds a big chunk of work.
Any ideas?
Thank you in advance!
Andrey
Here is how I solved a similar issue. For every validator that is added to the accordion, I store the validator id in an array, along with the accordion panel that it is contained in. I then pass this list to the client. I also hook into the OnSubmit event by calling Page.ClientScript.RegisterOnSubmitStatement. The javascript function that executes during the onSubmit first checks to see if the page is valid, if so then it just exits, if not then it loops through the list of validators looking for ones that are not valid, when it finds one, it expands the section associated with that validator.
I have one group of 3 asp.net textboxes and one group of 2 asp.net listboxes. There is one asp.net button. The listboxes each have an asp.net required field validator tied to them. The other 3 textboxes in the first group do not have any validation. When the button is clicked, it should display a message if either of the listboxes does not have anything selected, however, if one of the textboxes in the first group has some value, then it should not matter if the listboxes have any value(s) selected. I assigned the ValidationGroup vgFirst to the group of textboxes and the ValidationGroup vgSecond to the two listboxes. I then assigned the ValidationGroup vgSecond to each RequiredFieldValidator and assigned the button a ValidatonGroup of vgSecond. I think I have everything right, but I am not sure how to handle it with just one button. Do I have to disable Validation for the listboxes if the text in the textboxes change? Is this my only option?
Unforuntately, the RequiredFieldValidator isn't smart enough to be used that way. I suggest you use a CustomFieldValidator and write your own JavaScript validation or make use of a server-side validation scheme (which should probably be done anyway as I find it to be a bit more reliable than the client-side stuff that gets automatically generated).
edit---
Yes... you will need to enable/disable validation depending on values in your textboxes if you want to continue to use RequireFieldValidators.