Databases
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PO
 

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    <p>Based on this answer here on <a href="https://stackoverflow.com/questions/3807018/print-documents-via-wpf-controls-and-convert-to-xps">printing documents via Wpf-controls and convert to XPS</a> I came up with the following extension method to create the visual tree. It works well within NUnit without STA-thread or anything.</p> <pre><code>/// &lt;summary&gt; /// Render a UIElement such that the visual tree is generated, /// without actually displaying the UIElement /// anywhere /// &lt;/summary&gt; public static void CreateVisualTree(this UIElement element) { var fixedDoc = new FixedDocument(); var pageContent = new PageContent(); var fixedPage = new FixedPage(); fixedPage.Children.Add(element); pageContent.ToMaybeOf&lt;IAddChild&gt;().Do(c =&gt; c.AddChild(fixedPage)); fixedDoc.Pages.Add(pageContent); var f = new XpsSerializerFactory(); var w = f.CreateSerializerWriter(new MemoryStream()); w.Write(fixedDoc); } </code></pre> <p>Please note that </p> <ul> <li>the other answer uses an API of the Reach-dll that does not look like the API I am seeing. I assume that there are differences between .NEt Framework versions 3.5 and 4.0</li> <li>the <code>ToMaybeOf</code> stuff basically means to treat <code>pageContent</code> as <code>IAddChild</code> and do an action on that interface</li> <li>this will <strong>not</strong> work with an element of type <strong>Window</strong> since the element is essentially added as a child to a Visual and Window will complain bitterly about this.</li> </ul>
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    1. POHow can I unit test something that uses VisualTreeHelper?
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    1. COI cast `pageContent` to `IAddChild` and performed the operation directly, rather than relying on the `ToMaybeOf` and `Do`: `((IAddChild)pageContent).AddChild(fixedPage);`
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      1. USDavid Meredith
 

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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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