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Asked: 2026-06-15T23:46:45+00:00

I’m new to WPF and am used to winforms. I don’t understand why the

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I’m new to WPF and am used to winforms. I don’t understand why the compiled output is not the same as in the design view. I find this to be bit annoying and misleading.

When adding elements, I snapped them to the red border and the results are not consistent with what I see in the compiled window. In winforms, I’m used to using table layouts, panels, and docking and aligning items. Is there a proper way of doing this in WPF to get consistent results?

Designer View

The XAML

<Window x:Class="WpfApplication4.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Rectangle Fill="#FFF4F4F5" HorizontalAlignment="Left" Height="300" Margin="10,10,0,0" Stroke="Black" VerticalAlignment="Top" Width="497"/>
    </Grid>
</Window>

The output

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1 Answer

  1. Editorial Team

    In WPF most containers don’t have the notion of children position. Instead, most controls use properties such as Margin, HorizontalAlignment and VerticalAlignment to define their layout. Furthermore, specific containers offer different functions. If you want docking, you can use a DockPanel. If you want stacked elements, you can use a StackPanel and so on. I suggest you to look up a few tutorials online, it’s plenty of resources.

    In your case, if you want your control to completely fill its container, remove the Margin, VerticalAlignment, HorizontalAlignment, Width and Height attributes from its XAML code.

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