XAML Control.CornerRadius

By Fons Sonnemans, 22-aug-2018

I'm in the process of learning the new Windows SDK Preview. Yesterday I wrote a blog about the new AppBarElementContainer. Today's subject is the new CornerRadius property of the Control class. Until now most input controls where rectangular. Now they can have rounded corners.

Demo

I have created a small demo page in which I placed a few input controls in a StackPanel. For all controls I have set the CornerRadius to 8.

<Page x:Class="App2.MainPage"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:local="using:App2"
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
      mc:Ignorable="d"
      Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
    <Grid>
        <StackPanel HorizontalAlignment="Center"
                    VerticalAlignment="Center"
                    Spacing="8">
            <Button Content="Hello"
                    HorizontalAlignment="Stretch"
                    CornerRadius="8"
                    FontSize="20"
                    Margin="0,0,0,0"
                    VerticalAlignment="Center" />
            <TextBox Text="World"
                     CornerRadius="8" />
            <PasswordBox CornerRadius="8" />
            <ComboBox SelectedIndex="0"
                      HorizontalAlignment="Stretch"
                      CornerRadius="8">
                <ComboBoxItem Content="A" />
                <ComboBoxItem Content="B" />
                <ComboBoxItem Content="C" />
            </ComboBox>
            <TimePicker CornerRadius="8" />
        </StackPanel>
    </Grid>
</Page>

this results in the following output. The Button, TextBox, PasswordBox and ComboBox have rounded corners. Unfortunately the TimePicker does not. I hope it will be fixed before it released.

The focus rectangle of a Button is also still rectangular. I expect that will stay like this.

Closure

The CornerRadius is a nice new feature. I will maybe use it a one of my games. Probably not in a LOB app.

Fons

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