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POFinding controls that use a certain interface in ASP.NET
 

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    <p>Having a heckuva time with this one, though I feel I'm missing something obvious. I have a control that inherits from <code>System.Web.UI.WebControls.Button</code>, and then implements an interface that I have set up. So think...</p> <pre><code>public class Button : System.Web.UI.WebControls.Button, IMyButtonInterface { ... } </code></pre> <p>In the codebehind of a page, I'd like to find all instances of this button from the ASPX. Because I don't really know what the <em>type</em> is going to be, just the <em>interface</em> it implements, that's all I have to go on when looping through the control tree. Thing is, I've never had to determine if an object uses an interface versus just testing its type. <strong>How can I loop through the control tree and yank anything that implements <code>IMyButtonInterface</code> in a clean way</strong> (Linq would be fine)?</p> <p>Again, know it's something obvious, but just now started using interfaces heavily and I can't seem to focus my Google results enough to figure it out :)</p> <p><strong>Edit:</strong> <code>GetType()</code> returns the actual class, but doesn't return the interface, so I can't test on that (e.g., it'd return "<code>MyNamespace.Button</code>" instead of "<code>IMyButtonInterface</code>"). In trying to use "<code>as</code>" or "<code>is</code>" in a recursive function, the <em><code>type</code></em> parameter doesn't even get recognized within the function! It's rather bizarre. So</p> <pre><code>if(ctrl.GetType() == typeToFind) //ok if(ctrl is typeToFind) //typeToFind isn't recognized! eh? </code></pre> <p>Definitely scratching my head over this one.</p>
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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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