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    <p>I removed the AJAX.BeginForm an added Ajax.ActionLink which dosent submit the form .. instead it passes a single paramater to the controller which I need to check.. Here is the code..</p> <pre><code> &lt;% using (Html.BeginForm()) { %&gt; &lt;%: Html.ValidationSummary(true, "Account creation was unsuccessful. Please correct the errors and try again.") %&gt; &lt;fieldset&gt; &lt;div class="editor-label"&gt; &lt;%: Html.LabelFor(m =&gt; m.UserName) %&gt; &lt;/div&gt; &lt;div class="editor-field"&gt; &lt;%: Html.TextBoxFor(m =&gt; m.UserName) %&gt; &lt;%: Html.ValidationMessageFor(m =&gt; m.UserName) %&gt; &lt;/div&gt; &lt;%= Ajax.ActionLink("Checkavailability", "Checkavailability", new { UserName = "" }, new AjaxOptions { UpdateTargetId = "textEntered" }, new { id = "u" })%&gt; &lt;span id="textEntered"&gt;Nothing Entered&lt;/span&gt; &lt;p&gt; &lt;input type="submit" value="Register" /&gt; &lt;/p&gt; &lt;/fieldset&gt; &lt;% } %&gt; </code></pre> <p>Below is the jQuery which is used to set the parameters being passed</p> <pre><code> &lt;script type="text/javascript"&gt; $(document).ready(function () { $('#UserName').blur(function () { changeActionURL(); }); }); function changeActionURL() { if ($("#UserName").val() == "") { alert('Please enter your email to check availablity'); } else { var url = '&lt;%= new UrlHelper(ViewContext.RequestContext).Action("Checkavailability", "Account") %&gt;' + '?UserName=' + $("#UserName").val(); $("#u").attr('href', url); } } &lt;/script&gt; </code></pre> <p>the controller is..</p> <pre><code>public string Checkavailability(string UserName) { if (UserName != "Enter text" &amp;&amp; !String.IsNullOrEmpty(UserName)) { string userName = UserName.ToLower(); NorthwindEntities dbContext = new NorthwindEntities(); var query = from p in dbContext.Employees where p.FirstName.ToLower() == userName select p; IEnumerable&lt;Employee&gt; rec = query.ToList(); if (rec.Count() == 0) { return "You entered: \"" + UserName.ToString() + "\" available "; } else { return "You entered: \"" + UserName.ToString() + "\" already exists " + DateTime.Now.ToLongTimeString(); } } return String.Empty; } </code></pre>
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    1. COAlmost there. First of all, you are missing here opening tag for `</fieldset>`. Furthermore, this should work, but won't enforce the user to input the data required. You want to intercept the `submit()` action rather or additionally to the `blur()`.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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