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POASP.NET MVC 3 - Partial vs Display Template vs Editor Template
 

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    <p>So, the title should speak for itself.</p> <p>To create re-usable components in ASP.NET MVC, we have 3 options (could be others i haven't mentioned):</p> <p><em>Partial View:</em></p> <pre><code>@Html.Partial(Model.Foo, "SomePartial") </code></pre> <p><em>Custom Editor Template:</em></p> <pre><code>@Html.EditorFor(model =&gt; model.Foo) </code></pre> <p><em>Custom Display Template:</em></p> <pre><code>@Html.DisplayFor(model =&gt; model.Foo) </code></pre> <p>In terms of the actual View/HTML, all three implementations are identical:</p> <pre><code>@model WebApplications.Models.FooObject &lt;!-- Bunch of HTML --&gt; </code></pre> <p><strong>So, my question is - when/how do you decide which one of the three to use?</strong></p> <p>What i'm really looking for is a list of questions to ask yourself before creating one, for which the answers can be used to decide on which template to use.</p> <p>Here's the 2 things i have found better with EditorFor/DisplayFor:</p> <ol> <li><p>They respect model hierarchies when rendering HTML helpers (e.g if you have a "Bar" object on your "Foo" model, the HTML elements for "Bar" will be rendered with "Foo.Bar.ElementName", whilst a partial will have "ElementName").</p></li> <li><p>More robust, e.g if you had a <code>List&lt;T&gt;</code> of something in your ViewModel, you could use <code>@Html.DisplayFor(model =&gt; model.CollectionOfFoo)</code>, and MVC is smart enough to see it's a collection and render out the single display for each item (as opposed to a Partial, which would require an explicit for loop).</p></li> </ol> <p>I've also heard DisplayFor renders a "read-only" template, but i don't understand that - couldn't i throw a form on there?</p> <p>Can someone tell me some other reasons? Is there a list/article somewhere comparing the three?</p>
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    1. COThe concepts behind editor and display templates are clearly defined in the documentation for asp.net mvc 2. Templates are partials which adhere to a specific convention. The situations which make templates better or worse than old partials are almost strictly dependent on whether or not the convention is worth adherence in your application.
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