添加项目文件。

Wpf.Ui.Extend/Controls/ColorZone/ColorZone.xaml

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+<ResourceDictionary
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:exc="clr-namespace:Wpf.Ui.Extend.Controls">
+
+
+    <Style TargetType="{x:Type exc:ColorZone}">
+        <Setter Property="Border.CornerRadius" Value="{DynamicResource ControlCornerRadius}" />
+        <Setter Property="HorizontalContentAlignment" Value="Stretch" />
+        <Setter Property="VerticalContentAlignment" Value="Stretch" />
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="{x:Type exc:ColorZone}">
+                    <Border
+                        Background="{TemplateBinding Background}"
+                        BorderBrush="{TemplateBinding BorderBrush}"
+                        BorderThickness="1"
+                        CornerRadius="{TemplateBinding CornerRadius}">
+                        <ContentPresenter
+                            x:Name="ContentPresenter"
+                            Margin="{TemplateBinding Padding}"
+                            HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
+                            VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
+                            Content="{TemplateBinding ContentControl.Content}"
+                            ContentStringFormat="{TemplateBinding ContentControl.ContentStringFormat}"
+                            ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}"
+                            ContentTemplateSelector="{TemplateBinding ContentControl.ContentTemplateSelector}" />
+                    </Border>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+</ResourceDictionary>

Wpf.Ui.Extend/Controls/ColorZone/ColorZone.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace Wpf.Ui.Extend.Controls;
+
+public class ColorZone : ContentControl
+{
+    static ColorZone()
+    {
+        DefaultStyleKeyProperty.OverrideMetadata(typeof(ColorZone), new FrameworkPropertyMetadata(typeof(ColorZone)));
+    }
+
+    public CornerRadius CornerRadius
+    {
+        get { return (CornerRadius)GetValue(CornerRadiusProperty); }
+        set { SetValue(CornerRadiusProperty, value); }
+    }
+
+    // Using a DependencyProperty as the backing store for CornerRadius.  This enables animation, styling, binding, etc...
+    public static readonly DependencyProperty CornerRadiusProperty =
+        DependencyProperty.Register(nameof(CornerRadius), typeof(CornerRadius), typeof(ColorZone), new PropertyMetadata(new CornerRadius(0)));
+}