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    <p>Since entering html in a TextArea results in an HttpRequestValidationException exception being thrown, early in the pipeline, we can only catch it along with unhandled exceptions in Global.asax.</p> <p>In Global.asax.cs we add:</p> <pre><code> void Application_Error(object sender, EventArgs e) { Exception ex = Server.GetLastError(); ex = ex.InnerException ?? ex; if (ex is HttpRequestValidationException) { string url = Request.Url.ToString() + "?error=1"; Response.Redirect(url); Server.ClearError(); return; } //any other exception handling that you need goes here } </code></pre> <p>Here is the markup:</p> <pre><code>&lt;form action="&lt;%=Url.Action("Create") %&gt;" method="post" class="data-entry-form" id="feedBackForm"&gt; &lt;fieldset class="comment"&gt; &lt;div class="editor-field"&gt; &lt;%= Html.TextAreaFor(model =&gt; model.Comment, 10, 2, new { placeholder="your message" }) %&gt; &lt;%= Html.ValidationMessageFor(model =&gt; model.Comment) %&gt; &lt;% if (Request.QueryString["error"] == "1") { Response.Write("&lt;br/&gt;&lt;span class= 'error'&gt;Please remove all HTML from your comment and resubmit&lt;/span&gt;"); } %&gt;&lt;/div&gt; &lt;br /&gt; E-mail address (optional) &lt;div class="editor-field"&gt; &lt;%= Html.TextBoxFor(model =&gt; model.Email, new { placeholder="you@youremailaddress.com" }) %&gt; &lt;%= Html.ValidationMessageFor(model =&gt; model.Email) %&gt; &lt;/div&gt; &lt;input type="submit" value="Send" /&gt; &lt;/fieldset&gt; &lt;/form&gt; </code></pre> <p>notice the line: <code>if (Request.QueryString["error"] == "1"</code> handles the parameter passed in the redirect in Application_error</p> <p>So far we have server side validation.</p> <p>For client side validation, we add a custom rule using the JQuery Validate plugin:</p> <pre><code> jQuery.validator.addMethod("hasNoHTML", function (value, element) { if (value.match(/&lt;(\w+)((?:\s+\w+(?:\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|[^&gt;\s]+))?)*)\s*(\/?)&gt;/)) { return false; } return true; }, "* Please remove all HTML from your comment and resubmit"); $("#feedBackForm").validate( { rules: { Comment: { required: true, hasNoHTML: true } } } ); </code></pre> <p>Here is the reference to the regular expression: <a href="http://ejohn.org/files/htmlparser.js" rel="nofollow">http://ejohn.org/files/htmlparser.js</a></p> <p>And the css to decorate the error: </p> <pre><code>.error { color:red; } </code></pre>
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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.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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