I think this is a common problem. I have a form where I show/hide fields dynamically using jQuery, depending on some radio buttons.
I have RequiredFieldValidator's on all the fields, but I don't want them to be triggered if their ControlToValidate is hidden (using jQuery).
Is that possible? Thanks in advance.
EDIT: Here is the solution, thanks to Marek. It might not be very obvious if you have weird clientIDs because of MasterPages
This is the ASPX
<asp:TextBox ID="txtName" runat="server" />
<asp:RequiredFieldValidator ID="vldName" ControlToValidate="txtName" runat="server" ErrorMessage="You must enter Name!" />
...
<asp:Button ID="btnSubmit" runat="server" Text="Submit" />
This is the jQuery
$(function() {
$('#ctl00_cphContent_btnSubmit').click(function() {
if (!$('#ctl00_cphContent_txtName').is(':visible'))
ValidatorEnable(ctl00_cphContent_vldName, false);
});
});
Hope it will make someone's life easier
If I remember correctly there's a function called ValidatorEnable(validatorClientId, isEnabled) that allows you to disable/enable the ASP.NET validators via javascript. You could use jQuery right before your form submit to disable all your invisible validators.
There's some documentation about client side API available from the validators here http://msdn.microsoft.com/en-us/library/aa479045.aspx
Hey u can set the control to validate property from C# code when u r setting visiblility from C# code.This wil solves ur problem.
if ($('#input-name').length) {
// do something
}
This will now solves ur problem
Related
I've faced the following problem with my aps validator. I have a textbox with asp validator. When the user leaves the textbox empty and click on the submit button the validation message shows, but the page does a postback. Any ideas what may cause this happen?
Heres the validator:
<asp:RequiredFieldValidator ID="valReqName" runat="server"
ControlToValidate="txtName" Display="Dynamic" ErrorMessage="blq blq">
</asp:RequiredFieldValidator>
<asp:TextBox ID="txtName" style="font-family:Tahoma, Geneva, sans-serif;
color: #4F4F4F;" runat="server">
</asp:TextBox>
Many thanks,
Anton
EDIT
I have two tabs in an UpdatePanel. The validation problem is part of the second tab, where the user makes some inputs. When I've remove this trigger:
<asp:AsyncPostBackTrigger ControlID="lnkUpload" EventName="Click" />
The postback problem was solved, but another problem occurred. Well at least the postback is removed. Thanks for all answers.
(lnkUpload is the id of the second tab linkbutton)
EDIT 2
Well here is the solution. It appears that my problem was the same like in this article. http://jeffreypaarhuis.com/2011/08/08/validation-not-working-in-updatepanel/
I'm posting the solution as it might be useful for someone else.
"This is the problem:
When a validator is loaded on the page it creates a bit of javascript to support the clientside validation. When you place a validator inside an usercontrol that isn´t visible by default, and this usercontrol is in an updatepanel, it does not create that javascript properly.
This is the solution:
Outside the updatepanel, I did above, create a dummy validator with a dummy textbox using a dummy validationgroup like so:"
<%--dummy validator to make ajax validation possible--%>
<asp:RequiredFieldValidator runat="server" CssClass="hidden" ControlToValidate="dummyTextBox" ValidationGroup="dummy"></asp:RequiredFieldValidator>
<asp:TextBox runat="server" ID="dummyTextBox" CssClass="hidden"></asp:TextBox>
It appears that my problem was the same like in this article.
Have you tried the solution in this thread:
ASP.net RequiredFieldValidator not preventing postback
Remove the following line from web.config
<xhtmlConformance mode="Legacy"/>
"If I remove the line, my validation works the way I expected it to. Googling that uncovered a bunch of blog posts about how VisualStudio adds that line to the web.config when upgrading web apps from .net 1.1 to .net 3.5.
The blog posts were mainly complaining about how that field interferes with .net's AJAX stuff, but I'm guessing it messes with the JavaScript emitted for the RequiredFieldValidator in a similar fashion."
Please add ValidationGroup to your validator(valReqName) and button.
Add this attribute to your validator.
EnableClientScript="True"
I have run into the same problem as described here.
Only the question is marked as answered with only an explanation as to why you may have to click twice when using a RequiredFieldValidator on input fields - once as the blur of a textbox(for example) will correct the validation and then again to actually post the form.
I don't want to have to click a button twice! Does anyone know a solution or workaround to this?
You could add EnableClientScript=false to the validator.
That prevents the client-side validation, so you will always get a postback (which may not exactly be what you want, though). The validation will still be done, just server-side.
Be sure to wrap the button-click logic in a if (Page.IsValid) { ... }, to check the status of the validators.
Apologies for not posting code previously I assumed this to be a standard problem with the RequiredFieldValidator, but have since realised my particular problem was coming from a CompareValidator, used to ensure entered passwords matched.
The CompareValidator was causing the issue that I described, causing me to have to click away from the field to blur and validate, before being able to click on the post button.
I'm not sure why but changing the Display of the CompareValidator from Dynamic to Static has cleared the problem up.
If the validator is Display="Dynamic", and the appearance of the error message causes the submit button to move, then the MouseUp event is not received by the submit button. In this case, the validation fires and clears the error message, but the submit button does not fire. To solve the problem, either set the the validators to be Display="Static", or rearrange the form so that the submit button does not move when error messages appear.
Here's a way to reserve about one, vertical line of space for a dynamic validation message:
<div style="height:1.5em;overflow:visible;">
<asp:RequiredFieldValidator ID="R1" runat="server"
ErrorMessage="Name is required" ControlToValidate="TextBoxName"
Display="Dynamic"></asp:RequiredFieldValidator>
</div>
I did not find it necessary to set EnableClientScript="false", although that did help for a CustomValidator that had no client-side validation function implemented.
Posting your code is always a good idea, That way we could run your code in a test environment and modify it to ensure it works before posting our answer.
I would suggest adding
causesValidation="true"
to your button to see if that works.
I have a better idea.
Add Text="" to textbox Control.
Add InitialValue="" to Validator Control.
What it will do, when it will be posting, it will find the value of the text box is still the initail value and it will throw an error and the form will not be posted.
Try this:
<asp:RequiredFieldValidator ID="reqFieldCloseComment" ControlToValidate="tbCloseComment" ValidationGroup="ChangeStatus" ErrorMessage="Please enter a reason" Display="Dynamic" runat="server" InitialValue=""></asp:RequiredFieldValidator>
<asp:TextBox ID="tbCloseComment" runat="server" CausesValidation="true" TextMode="MultiLine" Height="107px" Width="400px" Text=""></asp:TextBox>
<asp:Button ID="btnCloseRequestFinal" Text="Finish" CssClass="CloseReqButton" runat="server" ValidationGroup="ChangeStatus" />
Here is code that is working fine for me and helping to get rid of double click.
<asp:TextBox ID="TextBox1" runat="server" autocomplete="off"
Enabled="true" MaxLength="20" onfocus="SetActiveControl(this);" Text=""
CausesValidation="true" />
<asp:RequiredFieldValidator ID="RequiredFieldValidator1"
runat="server" ControlToValidate="TextBox1" Display="Static" ErrorMessage="Ha!" SetFocusOnError="True" EnableClientScript="true" ForeColor="" InitialValue="" />
$(function() {
$("input.btn").on("click",function(){
if(Page_BlockSubmit == true) {Page_BlockSubmit = false};
})
});
Page_BlockSubmit is a JS variable defined by the js generated from code behind when you define the validator . I haven't went deeper to know why MS need this variable, but the scenario is：
the first click will make Page_BlockSubmit become false.
the second click will check the value of Page_BlockSubmit and return true.
if you implemented the code I posted, every time you click the button, the variable will be set as false which will trigger the submit at every click.
And, you can use google chrome to trace the value of Page_BlockSubmit.
Is there a way to set up the calendar extender so that the calendar displays when the text box recieves focus AND when the when the element with the "PopupButtonID" is clicked? With my current settings it seems to be one or the other.
It's a bit of an ugly way to do it, but you can do this if you're prepared to use two extenders.
<asp:TextBox runat="server" ID="DateTextBox" />
<asp:ImageButton runat="server" ID="CalendarImageButton" ImageUrl="~/date_16x16.gif" />
<ajaxtoolkit:CalendarExtender runat="server" id="Extender1" TargetControlID="DateTextBox"/>
<ajaxtoolkit:CalendarExtender runat="server" ID="Extender2" TargetControlID="DateTextBox" PopupButtonID="CalendarImageButton" />
This way the calendar will appear whether you focus on the textbox or click the imagebutton.
Not that I'm aware of; it's one or the other. The only way I can think of is set it to use the popup control, then add a JS event handler for the textbox focus, and manually find the calendar extender, and there may be a show() method so you could manually invoke the trigger potentially. Not 100% sure. To find out do:
function textboxFocus() {
var c = $find("<%= calextenderid.ClientID %>");
//can use firebug to see if c.open method exists, or check for something else
}
Again, never done it, so not 100% sure.
HTH.
Use the CalendarExtender's show() method, referencing it by BehaviorID:
<asp:TextBox runat="server" ID="DateTextBox" />
<asp:ImageButton runat="server" ImageUrl="~/date_16x16.gif" OnClientClick="$find('Extender1').show();return false;" />
<ajaxtoolkit:CalendarExtenderrunat="server" id="Extender1" BehaviorID="Extender1" TargetControlID="DateTextBox"/>
I have several tabs that are loaded via ajax, and each one has a set of validators. I want to allow the user to change tabs only if the tab is valid
I thought setting a validationgroup to the validators and then check for the specific group like this, would work:
function validatePage(group) {
return Page_ClientValidate(group);
}
However, when I call the function, it always returns true. Can anyone see what I'm doing wrong?
I check it like this
alert(validatePage("presentaciones"));
And I have some validators:
// (...)
<asp:TextBox ValidationGroup="presentaciones" id="txtDescription" runat="server" Text='<%# Eval("Description") %>' MaxLength="50" />
<asp:RequiredFieldValidator ID="DescriptionRequiredFieldValidator" runat="server" ControlToValidate="txtDescription" SetFocusOnError="true" ValidationGroup="presentaciones" ErrorMessage="Debe ingresar una descripción" Display="Dynamic" />
// (...)
I have made groups work server-side with Page.Validate(group) but I wasn't aware this could be done client-side. Perhaps you need to implement a custom validation control that checks the status of each tab.
My guess is that the validation scripts are not being wired up. In your function do an alert((typeof(Page_Validators) == "undefined")) and see if it displays true. You said you are loading the tabs via ajax. You may want to see if placing a validator on the page somewhere will help wire up the validation scripts.
The other thing to watch for is Firefox and legacy rendering mode....client side just plain does not work in that scenario.
This can be done on the client side. Like this:
$('.buttonWithSameValidationGroup').bind('click', function () {
if (Page_ClientValidate($(this).attr('validationgroup'))) {
//do stuff
}
});
Sometimes you might need to add the following server side code in the Page Pre_Render method
button1.AddAttributes("validationgriup","group1");
What is the best solution of defaultButton and "Enter key pressed" for ASP.NET 2.0-3.5 forms?
Just add the "defaultbutton" attribute to the form and set it to the ID of the button you want to be the default.
<form defaultbutton="button1" runat="server">
<asp:textbox id="textbox1" runat="server"/>
<asp:button id="button1" text="Button1" runat="server"/>
</form>
NOTE: This only works in ASP.NET 2.0+
Since form submission on hitting the enter key is a part of life with HTML, you'll have to trap the Enter key using javascript and only allow it to go through when it's valid (such as within textareas). Check out http://brennan.offwhite.net/blog/2004/08/04/the-single-form-problem-with-aspnet/ for a good explanation.