Webforms - How To Trigger Client-side Validations Without Submit
Jan 17, 2011
I have a website in ASP.NET (WebForms, NOT MVC) which has a survey form divided in several slides. Each slide has a next button that, obviously does a transition (client-side, not post back or remote request) to the next slide.In each slide I have several ASP.NET controls with their related validators. I want this validators to be triggered when I click the next button (or maybe when each input loses focus?).
I remembered ASP.NET doing client side validation on lost focus, but maybe I'm wrong... (I quit doing ASP.NET development about 3 years now, so I can't remember)UPDATE: It would be better to make ASP.NET trigger each validator when the associated control lost focus. I remember ASP.NET doing this (or am I dreaming? =P)
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Feb 25, 2010
In forms I need to do custo validations. Like if use select radio button that he is residing on current address for more than 3 than previous residance fields are optional but if he select (radio button) that he is residing on current address for less than 3 years than previous address fields should be requried. Requirment is to do these on client side.
how this can be done. Secondly can there be some way we just disable a validation group and all validations in this group may be turned to disabl ?
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Feb 24, 2011
This code validates the textbox but not for combobox
function validate()
{
var Prefix =document.getElementById("<%=cmbcolor.ClientID%>").value;
if (Prefix =="Select")
{
alert("hi");return false;
}
return true ;
}
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Mar 10, 2010
I got one masterpage and one content / child page having gridview control .I want to do client side validations using javascript, can anyone suggest me where i have to do this.i.e.., either in masterpage or in content page(I know that only at the <head> tags we can include javascript file, but in content pages there are no html tags,i don't want to use server side validation controls , and i want to validate the server side controls in gridview
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Sep 28, 2010
I have a webform in which i am using Ajax.BeginForm.
But due to this my client side required fields are not working.
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Aug 24, 2010
I have been using properties and have idea that using properties with private fields we can implement validations and buisness rules in them.
But I am just thinking asp.net client side validation controls provide good strength and they provide good user experience as well. They can be used for any type of validation (using regular expression) on client side and their re-use is possible on server side. When validation controls are a must and they are powerful; is making properties not just wastage of time ?
Is there still some use of properties ?
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Jan 10, 2010
i have 2 dropdownlist on my asp page.first dropdownlist value gets selected from a pop up window.now i want to fire an event from the drop down list as the drop down list index changes.The dropdownlist is in update pannel and i want to invoke the server side event of dropdownlist so that the other dropdownlist can be populated.
How can i invoke dropdownlist server side event from the clientside(javascript) so that the ajax functionality can be acieved as my dropdownlist is in update panel.
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Jan 4, 2011
In ASP.NET when we have multiple input section with required field validator (Like on header for login with userid & Password is required and second on footer for subscription) when we click on subscription login section's userid required field validator activates and say userid required & i can not submit subscription.
when i submit subscription details login section should not have concern with this. how to avoid this conflicts.
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Feb 3, 2010
I have a username textbox on a form, that has a few validation rules applied to it via the DataAnnotation attributes:
[Required(ErrorMessage = "FTP login is required")]
[StringLength(15, ErrorMessage = "Must be 15 characters or fewer")]
[RegularExpression(@"[a-zA-Z0-9]*", ErrorMessage = "Alpha-numeric characters only")]
public string FtpLogin { get; set; }
I also have a button next to this text box, that fires off a jQuery ajax request that checks for the existence of the username as follows:
<button onclick="check(this);return false;" id="FtpLoginCheck" name="FtpLoginCheck">Available?</button>
I'm looking for a way of tieing the two together, so that the client-side validation is performed before the call to the "check(this)" in the onclick event.
Edit: To be more clear, I need a way to inspect or trigger the client-side validation result of the textbox, when I click the unrelated button beside it.
Edit: I now have the button JS checking for $("form").validate().invalid, but not displaying the usual validation messages.
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Nov 19, 2010
I have a gridview.The Gridview is in an update panel.I added a dropdownlist in a template column of the gridview.I have autopostback set to true.I have code working in the selectedindexchanged event all of that works great now I want to add a javascript confirm prompt on client-side change of the dropdowns,I have it popping up the confirm box, but no matter what the user selects (ok or cancel) it does not post back
<asp:DropDownList ID="ddlWinnerStatus" runat="server" CssClass="winStatusDDL" OnChange="return ShowWarning(this);"AutoPostBack="true" OnSelectedIndexChanged="ddlWinnerStatus_OnSelectedIndexChanged"></asp:DropDownList>
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Mar 19, 2010
With the following submit, client side validation works perfectly: <input
type="Submit"
value="Create"
/>
<input
type="button"
value="Create"
onclick="javascript:saveAddress(0);"
/>
<script type="text/javascript" language="javascript">
function saveAddress(id) {
var form = document.forms[0];
form.action = '/AddressType/Create';
form.submit();
}
</script>
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Feb 9, 2010
For the release of Microsoft MVC 2.0 RC2, can someone go into further detail on the following BUG/FIX: You can now programmatically disable client validation for a submit button (an input elements whose type attribute is set to "submit") even if the button does not have its name attribute set, whereas before it required the name attribute.Does this apply to the HTML Helper Submit Button or the input submit button? How would I disable client validation for a submit button? I tried using the htmlAttribute causesvalidation="false" on a HTML Helper Submit button and it did not work.
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Nov 23, 2010
I have a user control which contains a CustomValidator which is used according to whether a RadioButton is checked or not (there are several RadioButtons, I'm only showing the relevant one)
<asp:RadioButton runat="Server" ID="RadioBetween" GroupName="DateGroup" CssClass="date_group_options_control_radio" />
[code]...
There is some client + server side validation code (the server side code does exactly the same thing and is skipped for brevity)
<script type="text/javascript">
function ValidateDateFields_Client(source, args) [code]...
There are two instances of this control in the page. When running the client side version it hits the wrong one (the version of the control which is disabled). You can see from the generated HTML both are correctly specified. I'm not sure how .NET works out which clientside function to call given they both have the same name.
<script type="text/javascript">
//<![CDATA[
var ctl00_MCPH1_QueryTextValidator = document.all ? document.all["ctl00_MCPH1_QueryTextValidator"] : document.getElementById("ctl00_MCPH1_QueryTextValidator");
[code]...
Do i need to add something in to scope it? What's the best way to achieve this? If I disable the loading of the second control everything works fine.
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Aug 11, 2010
I have two submit buttons, 1 on a search control with its own ValidationSummary/Group and another in a Datalist Item.When I submit the search button and validation errors occur, I must hit the "add to cart" button on the DataList item that was generated from a previous successful search twice in order for the ItemCommand event to fire.I have different validation groups specified for the two submit buttons.
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Nov 24, 2010
I am using Update Panel in my asp page and I am doing JQuery Validation on Asynchronous Postback...I just want to validate my form on only button clicks or submits..My problem is..all my buttons are in different formviews and won't load at a time...that's why I am unable to take the button id's and use the click events..here is my code..
Sys.WebForms.PageRequestManager.getInstance().add_initializeRequest(ValidateMyForm);
function ValidateMyForm(sender, args) {
var objPost = args.get_postBackElement(); [code]..
All I want to do is: 2nd time validation on only button submit not for everything...I do get other postbacks on this page and those post backs also gets validated each time (I want to Avoid this)...
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Aug 20, 2010
I am writing Watin test in MVC Asp.net app. I mvc app, all input are wrpped with form and every time an input or textarea is changed their form gets submitted by jquery like code below:
$("textarea", context).change(function() {
$(this).parents('form:first').submit();
});
This is perfect when changes are done by keyboard. However this doesn't trigger the form submit when input/textarea are changed by Watin TypeText() method. I tried to call Change() and Blur() events by Watin and also tried PressTab() with no luck.
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Oct 17, 2010
I have required validation controls on a page. If the user got to this page by mistake and wants to go to a different section of the website using the navigational buttons; required validators are triggered and it will not let the user navigate away. Ho do I get validators to trigger only when a submit button is clicked?
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Jan 6, 2010
If I have a standard HTML textbox
[Code]....
but got a readonly error.
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Dec 9, 2010
I have a requirement of adding server side variables in client side and other way round. Because I need to set a value from client side using javascript and access the same in code behind page.
I have to use C#.Net and JavaScript.
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Oct 17, 2010
Suppose I'm building a StackOverflow clone using webforms ASP.NET and jQuery. The Question page has a question, several answers, and comments under each. Requirements:Users can post new answers and comments, and edit existing ones, without postbacks. No UpdatePanels; the AJAX calls retrieve just the JSON they need, not HTML fragments. The page loads with all existing answers and comments in place (no javascript needs to run to read the page).
What I'm trying to figure out is how to do this without having to maintain two sets of markup (one that's bound on the client using some form of jQuery templating, and one that's bound on the server using traditional WebForms).
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Jan 5, 2010
I reordered some items in a listbox using Javascript. When I read the items in a postback in the code behind (ASP.NET), the order is in the original order. How do I get the same order as shown in the screen after Javascript manipulation?
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Oct 4, 2010
I m using site login Control in my login.ascx file and disaplaying login control in Div so if there is login link in page and i click on that then Login Div will popup which is site login.May i know how can handle error like username or password is incorrect on client side instead server side?
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Feb 9, 2011
I have to implement the print functionality on aspx page like on click of print image icon user will be able to get the print out of aspx page .aspx page will contain the server controls like textboxes , Gridview etc which one approach will be the best server side or client side printing ?
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Jul 19, 2010
I am trying to set a hidden type value to x on Server Side and then access it with Javascript. I have tried multiple ways to accomplish this.
At the basic level this is what I am trying to do.
Aspx page
<asp:HiddenField ID="HidRowNumber" runat="server" />
CS Page
In IsPostBack
HidRowNumber.Value = EFileRowNumber.Text;
Javscript
var status = document.getElementById("<%= HidRowNumber.ClientID %>").value;
When I am debugin it say it HidRowNumber's Value has changed to x but when I access the value with JS it always returns ''.
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Aug 7, 2010
i can use escape() and unescape() functions by Client side easily, but the problem when i have use escape() method for peice of HTML , then i dont know how to unescape this piece of HTMl By Server Side not By Client Side. how i can unescape (escapped HTML) by server side?
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