feat: add avalonia basic NumericUpDown style.

src/Avalonia/HandyControlDemo_Avalonia/Data/DemoInfo.json

@@ -13,6 +13,7 @@
       [ "ScrollViewer", "NativeScrollViewerDemo", "Brush.ScrollBox", "", "" ],
       [ "Slider", "SliderDemo", "Brush.Slider", "", "" ],
       [ "TextBlock", "TextBlockDemo", "Brush.TextBlock", "", "" ],
+      [ "NumericUpDown", "NumericUpDownDemo", "Brush.NumericListBox", "", "" ],
       [ "TextBox", "TextBoxDemo", "Brush.TextBox", "", "" ],
       [ "ComboBox", "NativeComboBoxDemo", "Brush.ComboBox", "", "" ],
       [ "Expander", "ExpanderDemo", "Brush.Expander", "", "" ],
@@ -49,13 +50,9 @@
       [ "ButtonGroup", "ButtonGroupDemo", "Brush.ButtonGroup", "", "Button" ],
       [ "ProgressButton", "ProgressButtonDemo", "Brush.ProgressBarStatusBar8", "", "Button" ],
       [ "Poptip", "PoptipDemo", "Brush.ToolTip", "", "DataDisplay" ],
-      [ "NumericUpDown", "NumericUpDownDemo", "Brush.NumericListBox", "", "DataEntry" ],
-      [ "TextBox", "TextBoxDemo", "Brush.TextBox", "", "DataEntry" ],
-      [ "ComboBox", "ComboBoxDemo", "Brush.ComboBox", "", "DataEntry" ],
       [ "CheckComboBox", "CheckComboBoxDemo", "Brush.CheckBoxList", "", "DataEntry" ],
       [ "AutoCompleteTextBox", "AutoCompleteTextBoxDemo", "Brush.AutoComplete", "1", "DataEntry" ],
       [ "PinBox", "PinBoxDemo", "Brush.Ellipsis", "", "DataEntry" ],
-      [ "DatePicker", "DatePickerDemo", "Brush.DateTimePicker", "", "DataEntry" ],
       [ "Clock", "ClockDemo", "Brush.Time", "", "DataEntry" ],
       [ "TimePicker", "TimePickerDemo", "Brush.TimePicker", "", "DataEntry" ],
       [ "CalendarWithClock", "CalendarWithClockDemo", "Brush.Calendar", "", "DataEntry" ],

src/Avalonia/HandyControlDemo_Avalonia/UserControl/Styles/NumericUpDownDemo.axaml

@@ -0,0 +1,23 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:hc="https://handyorg.github.io/handycontrol"
+             xmlns:vm="clr-namespace:HandyControlDemo.ViewModel"
+             x:Class="HandyControlDemo.UserControl.NumericUpDownDemo"
+             DataContext="{Binding InputElementDemo, Source={x:Static vm:ViewModelLocator.Instance}}">
+    <ScrollViewer>
+        <hc:UniformSpacingPanel Spacing="32"
+                                Margin="32"
+                                ChildWrapping="Wrap">
+            <hc:UniformSpacingPanel Spacing="16"
+                                    Orientation="Vertical">
+                <NumericUpDown Value="0"
+                               Width="380"
+                               Maximum="100" />
+                <NumericUpDown Value="0"
+                               IsEnabled="False" />
+                <NumericUpDown Value="0"
+                               IsReadOnly="True" />
+            </hc:UniformSpacingPanel>
+        </hc:UniformSpacingPanel>
+    </ScrollViewer>
+</UserControl>

src/Avalonia/HandyControlDemo_Avalonia/UserControl/Styles/NumericUpDownDemo.axaml.cs

@@ -0,0 +1,9 @@
+namespace HandyControlDemo.UserControl;
+
+public partial class NumericUpDownDemo : Avalonia.Controls.UserControl
+{
+    public NumericUpDownDemo()
+    {
+        InitializeComponent();
+    }
+}