jQuery Validation plugin in ASP.NET Web Forms

Question

I would really like use the jQuery Validation plugin in my ASP.NET Web Forms application (not MVC). I find it easier than adding asp validators everywhere and setting the control to validate field on all of them.

I am just having some issues both when setting the class like this class="required email" which I think has something to do with having a form tag within the main form tag.

I also run into issues when calling the jquery validate using the names which become mangled in an asp control

// validate signup form on keyup and submit
$("#signupForm").validate({
    rules: { 
        username: {
            required: true,
            minlength: 2
        }, },
    messages: { 
        username: {
            required: "Please enter a username",
            minlength: "username at least 2 characters"
        }, 
    }.

.......

        <p>
            <label for="username">
                Username</label>
            <input id="username" name="username" />
        </p>

because this

<asp:TextBox ID="tbUsername"  runat="server"></asp:TextBox>

renders as

<input name="ctl00$ContentPlaceHolder1$tbUsername" type="text" id="ctl00_ContentPlaceHolder1_tbUsername" />

and mangles the name. I can get the ClientID using <%=tbUsername.ClientID %>but that doesnt work with ClientName

Has anyone had any success using the jquery validator plugin with asp.net? If so what about using multiple forms much like using seprate validation groups? thanks

Answer 1

You can checkout the rules add function, but basically here's what you can do:

jQuery(function() {
    // You can specify some validation options here but not rules and messages
    jQuery('form').validate(); 
    // Add a custom class to your name mangled input and add rules like this
    jQuery('.username').rules('add', { 
        required: true, 
        messages: { 
            required: 'Some custom message for the username required field' 
        } 
    });
});

<input name="ctl00$ContentPlaceHolder1$tbUsername" type="text" id="ctl00_ContentPlaceHolder1_tbUsername" class="username" />

This way no need to worry about the crappy identifiers generated by the webforms engine.

Answer 2

what about the issue of having a form inside another one?

Answer 3

You can check xVal.webForms here: http://xvalwebforms.codeplex.com/

Answer 4

I recently posted a patch file for xVal.WebForms which resolves the multiple forms issue relaying on the well known ASP.Net validation Group. This patch also supports the ASP.Net CausesValidation property.

Yo can read about it here: http://cmendible.blogspot.com/

Answer 5

Here are examples of using the jQuery Validation plugin with WebForms and emulating the concept of validation groups with it. It actually works pretty well once you smooth out a couple issues.

Answer 6

Tested what Darin Dimitrov said and it works perfectly, but if you don't want to set a specific class to each of your fields, you can use jQuery selectors:

$('form').validate();
$('input[id$=Username]').rules('add', { 
    required: true, 
    messages: { 
        required: 'Some custom message for the username required field' 
    } 
});

<input name="ctl00$ContentPlaceHolder1$tbUsername" type="text" id="ctl00_ContentPlaceHolder1_tbUsername" />

Answer 7

A great way to do this is to use:

<%= textbox.Name %> or <%= textbox.ClientId %> whenever you need to reference a server item.

i.e.

var phoneNumb = $('#<%= tPhone.ClientID %>').val(); 

or

$("#signupForm").validate({
        rules: { 
                <%= username.Name %>: {
                        required: true,
                        minlength: 2
                }, },
        messages: { 
                <%= username.Name %>: {
                        required: "Please enter a username",
                        minlength: "username at least 2 characters"
                }, 
        }.

.......

Answer 8

$("#signupForm").validate({
        rules: { 
                <%= tbUsername.UniqueID %>: {
                        required: true,
                        minlength: 2
                }, },
        messages: { 
                <%= tbUsername.UniqueID %>: {
                        required: "Please enter a username",
                        minlength: "username at least 2 characters"
                }, 
        });

<asp:TextBox ID="tbUsername" runat="server"></asp:TextBox>

Answer 9

http://www.dotnetcurry.com/ShowArticle.aspx?ID=310