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POWPF UserControl Design Time Size
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  1. POWPF UserControl Design Time Size
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    copied!<p>When creating a UserControl in WPF, I find it convenient to give it some arbitrary Height and Width values so that I can view my changes in the Visual Studio designer. When I run the control, however, I want the Height and Width to be undefined, so that the control will expand to fill whatever container I place it in. How can I acheive this same functionality without having to remove the Height and Width values before building my control? (Or without using DockPanel in the parent container.)</p> <p>The following code demonstrates the problem:</p> <pre><code>&lt;Window x:Class="ExampleApplication3.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:loc="clr-namespace:ExampleApplication3" Title="Example" Height="600" Width="600"&gt; &lt;Grid Background="LightGray"&gt; &lt;loc:UserControl1 /&gt; &lt;/Grid&gt; &lt;/Window&gt; </code></pre> <p>The following definition of <code>UserControl1</code> displays reasonably at design time but displays as a fixed size at run time:</p> <pre><code>&lt;UserControl x:Class="ExampleApplication3.UserControl1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Height="300" Width="300"&gt; &lt;Grid Background="LightCyan" /&gt; &lt;/UserControl&gt; </code></pre> <p>The following definition of <code>UserControl1</code> displays as a dot at design time but expands to fill the parent <code>Window1</code> at run time:</p> <pre><code>&lt;UserControl x:Class="ExampleApplication3.UserControl1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"&gt; &lt;Grid Background="LightCyan" /&gt; &lt;/UserControl&gt; </code></pre>
 

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