From efbe02c79f7d6e82dbb1031e918b86797b665546 Mon Sep 17 00:00:00 2001
From: Jinhua Chen <jinhua.chen@omec-instruments.com>
Date: Fri, 3 Jan 2020 14:18:15 +0800
Subject: [PATCH 1/2] close 283

---
 .../Controls/NumericUpDownDemoCtl.xaml        |  2 +
 .../Controls/Input/NumericUpDown.cs           | 33 +++++++++++-
 .../Styles/Base/NumericUpDownBaseStyle.xaml   | 52 +++++++++++++------
 3 files changed, 70 insertions(+), 17 deletions(-)

diff --git a/src/Shared/HandyControlDemo_Shared/UserControl/Controls/NumericUpDownDemoCtl.xaml b/src/Shared/HandyControlDemo_Shared/UserControl/Controls/NumericUpDownDemoCtl.xaml
index 77fb878d..5036e772 100644
--- a/src/Shared/HandyControlDemo_Shared/UserControl/Controls/NumericUpDownDemoCtl.xaml
+++ b/src/Shared/HandyControlDemo_Shared/UserControl/Controls/NumericUpDownDemoCtl.xaml
@@ -9,6 +9,7 @@
             <StackPanel>
                 <hc:NumericUpDown/>
                 <hc:NumericUpDown Margin="0,32,0,0" IsEnabled="False"/>
+                <hc:NumericUpDown Margin="0,32,0,0" IsReadOnly="True"/>
 
                 <hc:NumericUpDown hc:InfoElement.Title="{x:Static langs:Lang.TitleDemoStr1}" Margin="0,32,0,0" Style="{StaticResource NumericUpDownExtend}"/>
                 <hc:NumericUpDown hc:InfoElement.Placeholder="{x:Static langs:Lang.PlsEnterContent}" hc:InfoElement.Title="{x:Static langs:Lang.TitleDemoStr1}" Margin="0,32,0,0" hc:InfoElement.Necessary="True" Style="{StaticResource NumericUpDownExtend}"/>
@@ -18,6 +19,7 @@
             <StackPanel Margin="32,0,0,0">
                 <hc:NumericUpDown Name="NumericUpDownCustomVerify" ShowClearButton="True" Style="{StaticResource NumericUpDownPlus}"/>
                 <hc:NumericUpDown Margin="0,32,0,0" IsEnabled="False" Style="{StaticResource NumericUpDownPlus}"/>
+                <hc:NumericUpDown Margin="0,32,0,0" IsReadOnly="True" Style="{StaticResource NumericUpDownPlus}"/>
 
                 <hc:NumericUpDown ShowClearButton="True" hc:InfoElement.Title="{x:Static langs:Lang.TitleDemoStr1}" Margin="0,32,0,0" Style="{StaticResource NumericUpDownPlus}"/>
                 <hc:NumericUpDown hc:InfoElement.Placeholder="{x:Static langs:Lang.PlsEnterContent}" hc:InfoElement.Title="{x:Static langs:Lang.TitleDemoStr1}" Margin="0,32,0,0" hc:InfoElement.Necessary="True" Style="{StaticResource NumericUpDownPlus}"/>
diff --git a/src/Shared/HandyControl_Shared/Controls/Input/NumericUpDown.cs b/src/Shared/HandyControl_Shared/Controls/Input/NumericUpDown.cs
index 46a9ce1f..dbce3b48 100644
--- a/src/Shared/HandyControl_Shared/Controls/Input/NumericUpDown.cs
+++ b/src/Shared/HandyControl_Shared/Controls/Input/NumericUpDown.cs
@@ -31,18 +31,28 @@ namespace HandyControl.Controls
         {
             CommandBindings.Add(new CommandBinding(ControlCommands.Prev, (s, e) =>
             {
+                if (IsReadOnly)
+                    return;
+
                 Value += Increment;
                 _textBox.Text = CurrentText;
                 _textBox.Select(_textBox.Text.Length, 0);
             }));
             CommandBindings.Add(new CommandBinding(ControlCommands.Next, (s, e) =>
             {
+                if (IsReadOnly)
+                    return;
+
+
                 Value -= Increment;
                 _textBox.Text = CurrentText;
                 _textBox.Select(_textBox.Text.Length, 0);
             }));
             CommandBindings.Add(new CommandBinding(ControlCommands.Clear, (s, e) =>
             {
+                if (IsReadOnly)
+                    return;
+
                 SetCurrentValue(ValueProperty, ValueBoxes.Double0Box);
                 _textBox.Text = string.Empty;
             }));
@@ -106,6 +116,9 @@ namespace HandyControl.Controls
 
         private void TextBox_PreviewKeyDown(object sender, KeyEventArgs e)
         {
+            if (IsReadOnly)
+                return;
+
             if (e.Key == Key.Up)
             {
                 Value += Increment;
@@ -122,7 +135,7 @@ namespace HandyControl.Controls
         {
             base.OnMouseWheel(e);
 
-            if (_textBox.IsFocused)
+            if (_textBox.IsFocused&&IsReadOnly==false)
             {
                 Value += e.Delta > 0 ? Increment : -Increment;
                 _textBox.Text = CurrentText;
@@ -359,9 +372,25 @@ namespace HandyControl.Controls
         public bool ShowClearButton
         {
             get => (bool) GetValue(ShowClearButtonProperty);
-            set => SetValue(ShowClearButtonProperty, value);
+            set => SetValue(ShowClearButtonProperty, value); 
         }
 
+        /// <summary>
+        ///     获取或设置一个值，该值指示NumericUpDown是否只读。
+        /// </summary>
+        public bool IsReadOnly
+        {
+            get => (bool)GetValue(IsReadOnlyProperty);
+            set => SetValue(IsReadOnlyProperty, value);
+        }
+
+        /// <summary>
+        ///     标识 IsReadOnly 依赖属性。
+        /// </summary>
+        public static readonly DependencyProperty IsReadOnlyProperty =
+            DependencyProperty.Register(nameof(IsReadOnly), typeof(bool), typeof(NumericUpDown), new PropertyMetadata(default(bool)));
+
+
         public Func<string, OperationResult<bool>> VerifyFunc { get; set; }
 
         public virtual bool VerifyData()
diff --git a/src/Shared/HandyControl_Shared/Themes/Styles/Base/NumericUpDownBaseStyle.xaml b/src/Shared/HandyControl_Shared/Themes/Styles/Base/NumericUpDownBaseStyle.xaml
index e41e3429..c69f0993 100644
--- a/src/Shared/HandyControl_Shared/Themes/Styles/Base/NumericUpDownBaseStyle.xaml
+++ b/src/Shared/HandyControl_Shared/Themes/Styles/Base/NumericUpDownBaseStyle.xaml
@@ -35,9 +35,9 @@
                                 <ColumnDefinition/>
                                 <ColumnDefinition Width="Auto"/>
                             </Grid.ColumnDefinitions>
-                            <controls:WatermarkTextBox Focusable="True" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" x:Name="PART_TextBox" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
-                            <Button Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Prev" Padding="5,7,5,1" Margin="0,0,0,14" Focusable="False" Grid.Column="1" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource UpGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
-                            <Button Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Next" Padding="5,1,5,7" Margin="0,14,0,0" Focusable="False" Grid.Column="1" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource DownGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
+                            <controls:WatermarkTextBox Focusable="True" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" x:Name="PART_TextBox" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" IsReadOnly="{TemplateBinding IsReadOnly}"/>
+                            <Button x:Name="UpButton" Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Prev" Padding="5,7,5,1" Margin="0,0,0,14" Focusable="False" Grid.Column="1" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource UpGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
+                            <Button x:Name="DownButton"  Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Next" Padding="5,1,5,7" Margin="0,14,0,0" Focusable="False" Grid.Column="1" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource DownGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
                         </Grid>
                     </Border>
                     <ControlTemplate.Triggers>
@@ -53,6 +53,10 @@
                         <Trigger Property="ShowUpDownButton" Value="False">
                             <Setter Property="Margin" TargetName="PART_TextBox" Value="2,0,2,1"/>
                         </Trigger>
+                        <Trigger Property="IsReadOnly" Value="True">
+                            <Setter Property="IsEnabled" TargetName="UpButton" Value="False"/>
+                            <Setter Property="IsEnabled" TargetName="DownButton" Value="False"/>
+                        </Trigger>
                     </ControlTemplate.Triggers>
                 </ControlTemplate>
             </Setter.Value>
@@ -75,9 +79,9 @@
                         <ColumnDefinition/>
                         <ColumnDefinition Width="Auto"/>
                     </Grid.ColumnDefinitions>
-                    <controls:WatermarkTextBox Margin="-2,0" CaretBrush="{TemplateBinding Foreground}" Focusable="True" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" x:Name="PART_TextBox" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
-                    <Button Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Prev" Padding="5,7,5,1" Margin="0,0,0,14" Focusable="False" Grid.Column="1" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource UpGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
-                    <Button Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Next" Padding="5,1,5,7" Margin="0,14,0,0" Focusable="False" Grid.Column="1" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource DownGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
+                    <controls:WatermarkTextBox Margin="-2,0" CaretBrush="{TemplateBinding Foreground}" Focusable="True" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" x:Name="PART_TextBox" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" IsReadOnly="{TemplateBinding IsReadOnly}"/>
+                    <Button x:Name="UpButton" Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Prev" Padding="5,7,5,1" Margin="0,0,0,14" Focusable="False" Grid.Column="1" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource UpGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
+                    <Button x:Name="DownButton" Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Next" Padding="5,1,5,7" Margin="0,14,0,0" Focusable="False" Grid.Column="1" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource DownGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
                 </Grid>
             </Border>
         </Grid>
@@ -91,6 +95,10 @@
             <Trigger Property="IsFocused" Value="true" SourceName="PART_TextBox">
                 <Setter Property="BorderBrush" TargetName="templateRoot" Value="{DynamicResource PrimaryBrush}"/>
             </Trigger>
+            <Trigger Property="IsReadOnly" Value="True">
+                <Setter Property="IsEnabled" TargetName="UpButton" Value="False"/>
+                <Setter Property="IsEnabled" TargetName="DownButton" Value="False"/>
+            </Trigger>
         </ControlTemplate.Triggers>
     </ControlTemplate>
 
@@ -110,9 +118,9 @@
                         <ColumnDefinition/>
                         <ColumnDefinition Width="Auto"/>
                     </Grid.ColumnDefinitions>
-                    <controls:WatermarkTextBox Margin="-2,0" CaretBrush="{TemplateBinding Foreground}" Focusable="True" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" x:Name="PART_TextBox" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
-                    <Button Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Prev" Padding="5,7,5,1" Margin="0,0,0,14" Focusable="False" Grid.Column="1" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource UpGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
-                    <Button Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Next" Padding="5,1,5,7" Margin="0,14,0,0" Focusable="False" Grid.Column="1" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource DownGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
+                    <controls:WatermarkTextBox Margin="-2,0" CaretBrush="{TemplateBinding Foreground}" Focusable="True" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" x:Name="PART_TextBox" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" IsReadOnly="{TemplateBinding IsReadOnly}"/>
+                    <Button x:Name="UpButton"  Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Prev" Padding="5,7,5,1" Margin="0,0,0,14" Focusable="False" Grid.Column="1" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource UpGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
+                    <Button x:Name="DownButton" Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Next" Padding="5,1,5,7" Margin="0,14,0,0" Focusable="False" Grid.Column="1" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource DownGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
                 </Grid>
             </Border>
         </Grid>
@@ -126,6 +134,10 @@
             <Trigger Property="IsFocused" Value="true" SourceName="PART_TextBox">
                 <Setter Property="BorderBrush" TargetName="templateRoot" Value="{DynamicResource PrimaryBrush}"/>
             </Trigger>
+            <Trigger Property="IsReadOnly" Value="True">
+                <Setter Property="IsEnabled" TargetName="UpButton" Value="False"/>
+                <Setter Property="IsEnabled" TargetName="DownButton" Value="False"/>
+            </Trigger>
         </ControlTemplate.Triggers>
     </ControlTemplate>
 
@@ -169,10 +181,10 @@
                         <ColumnDefinition Width="Auto"/>
                         <ColumnDefinition Width="25"/>
                     </Grid.ColumnDefinitions>
-                    <controls:WatermarkTextBox Padding="{TemplateBinding Padding}" x:Name="PART_TextBox" Watermark="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" HorizontalAlignment="Stretch" Grid.Column="0" Focusable="{TemplateBinding Focusable}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Grid.Row="0" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
+                    <controls:WatermarkTextBox Padding="{TemplateBinding Padding}" x:Name="PART_TextBox" Watermark="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" HorizontalAlignment="Stretch" Grid.Column="0" Focusable="{TemplateBinding Focusable}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Grid.Row="0" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" IsReadOnly="{TemplateBinding IsReadOnly}"/>
                     <Button Height="{x:Static system:Double.NaN}" Command="interactivity:ControlCommands.Clear" Name="ButtonClear"  Width="16" Visibility="Collapsed" Grid.Column="1" Style="{StaticResource ButtonIcon}" Padding="0,6" controls:IconElement.Geometry="{StaticResource DeleteFillCircleGeometry}" Foreground="{Binding BorderBrush,ElementName=templateRoot}"/>
-                    <Button Command="interactivity:ControlCommands.Prev" Padding="0,7,5,1" Margin="0,0,0,14" Focusable="False" Grid.Column="2" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource UpGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
-                    <Button Command="interactivity:ControlCommands.Next" Padding="0,1,5,7" Margin="0,14,0,0" Focusable="False" Grid.Column="2" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource DownGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
+                    <Button x:Name="UpButton" Command="interactivity:ControlCommands.Prev" Padding="0,7,5,1" Margin="0,0,0,14" Focusable="False" Grid.Column="2" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource UpGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
+                    <Button x:Name="DownButton" Command="interactivity:ControlCommands.Next" Padding="0,1,5,7" Margin="0,14,0,0" Focusable="False" Grid.Column="2" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource DownGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
                 </Grid>
             </Border>
         </Grid>
@@ -183,10 +195,15 @@
             <Trigger Property="IsMouseOver" Value="true" SourceName="templateRoot">
                 <Setter Property="BorderBrush" Value="{DynamicResource SecondaryBorderBrush}"/>
             </Trigger>
+            <Trigger Property="IsReadOnly" Value="True">
+                <Setter Property="IsEnabled" TargetName="UpButton" Value="False"/>
+                <Setter Property="IsEnabled" TargetName="DownButton" Value="False"/>
+            </Trigger>
             <MultiTrigger>
                 <MultiTrigger.Conditions>
                     <Condition Property="IsMouseOver" Value="true"/>
                     <Condition Property="ShowClearButton" Value="True"/>
+                    <Condition Property="IsReadOnly" Value="False"/>
                 </MultiTrigger.Conditions>
                 <Setter Property="Visibility" Value="Visible" TargetName="ButtonClear"/>
             </MultiTrigger>
@@ -231,10 +248,10 @@
                         <ColumnDefinition Width="Auto"/>
                         <ColumnDefinition Width="25"/>
                     </Grid.ColumnDefinitions>
-                    <controls:WatermarkTextBox x:Name="PART_TextBox" Padding="{TemplateBinding Padding}" Watermark="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" HorizontalAlignment="Stretch" Grid.Column="0" Focusable="{TemplateBinding Focusable}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Grid.Row="0" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
+                    <controls:WatermarkTextBox x:Name="PART_TextBox" Padding="{TemplateBinding Padding}" Watermark="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" HorizontalAlignment="Stretch" Grid.Column="0" Focusable="{TemplateBinding Focusable}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Grid.Row="0" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" IsReadOnly="{TemplateBinding IsReadOnly}"/>
                     <Button Height="{x:Static system:Double.NaN}" Command="interactivity:ControlCommands.Clear" Name="PART_ButtonClear" Width="16" Visibility="Collapsed" Grid.Column="1" Style="{StaticResource ButtonIcon}" Padding="0,6" controls:IconElement.Geometry="{StaticResource DeleteFillCircleGeometry}" Foreground="{Binding BorderBrush,ElementName=templateRoot}"/>
-                    <Button Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Prev" Padding="0,7,5,1" Margin="0,0,0,14" Focusable="False" Grid.Column="2" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource UpGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
-                    <Button Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Next" Padding="0,1,5,7" Margin="0,14,0,0" Focusable="False" Grid.Column="2" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource DownGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
+                    <Button x:Name="UpButton"  Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Prev" Padding="0,7,5,1" Margin="0,0,0,14" Focusable="False" Grid.Column="2" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource UpGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
+                    <Button x:Name="DownButton" Visibility="{TemplateBinding ShowUpDownButton,Converter={StaticResource Boolean2VisibilityConverter}}" Command="interactivity:ControlCommands.Next" Padding="0,1,5,7" Margin="0,14,0,0" Focusable="False" Grid.Column="2" Foreground="{Binding BorderBrush,ElementName=templateRoot}" controls:IconElement.Geometry="{StaticResource DownGeometry}" Style="{StaticResource ButtonIcon}" Width="30" VerticalAlignment="Center" Height="14"/>
                 </Grid>
             </Border>
         </Grid>
@@ -245,10 +262,15 @@
             <Trigger Property="IsMouseOver" Value="true" SourceName="templateRoot">
                 <Setter Property="BorderBrush" Value="{DynamicResource SecondaryBorderBrush}"/>
             </Trigger>
+            <Trigger Property="IsReadOnly" Value="True">
+                <Setter Property="IsEnabled" TargetName="UpButton" Value="False"/>
+                <Setter Property="IsEnabled" TargetName="DownButton" Value="False"/>
+            </Trigger>
             <MultiTrigger>
                 <MultiTrigger.Conditions>
                     <Condition Property="IsMouseOver" Value="true"/>
                     <Condition Property="ShowClearButton" Value="True"/>
+                    <Condition Property="IsReadOnly" Value="False"/>
                 </MultiTrigger.Conditions>
                 <Setter Property="Visibility" Value="Visible" TargetName="PART_ButtonClear"/>
             </MultiTrigger>

From e109f73ac312c981358fdbe03f9c3ccc5b778fee Mon Sep 17 00:00:00 2001
From: NaBian <836904362@qq.com>
Date: Sun, 5 Jan 2020 20:45:57 +0800
Subject: [PATCH 2/2] Update NumericUpDown.cs

---
 .../Controls/Input/NumericUpDown.cs           | 30 ++++++++-----------
 1 file changed, 12 insertions(+), 18 deletions(-)

diff --git a/src/Shared/HandyControl_Shared/Controls/Input/NumericUpDown.cs b/src/Shared/HandyControl_Shared/Controls/Input/NumericUpDown.cs
index dbce3b48..eac6fd1a 100644
--- a/src/Shared/HandyControl_Shared/Controls/Input/NumericUpDown.cs
+++ b/src/Shared/HandyControl_Shared/Controls/Input/NumericUpDown.cs
@@ -31,8 +31,7 @@ namespace HandyControl.Controls
         {
             CommandBindings.Add(new CommandBinding(ControlCommands.Prev, (s, e) =>
             {
-                if (IsReadOnly)
-                    return;
+                if (IsReadOnly) return;
 
                 Value += Increment;
                 _textBox.Text = CurrentText;
@@ -40,9 +39,7 @@ namespace HandyControl.Controls
             }));
             CommandBindings.Add(new CommandBinding(ControlCommands.Next, (s, e) =>
             {
-                if (IsReadOnly)
-                    return;
-
+                if (IsReadOnly) return;
 
                 Value -= Increment;
                 _textBox.Text = CurrentText;
@@ -50,8 +47,7 @@ namespace HandyControl.Controls
             }));
             CommandBindings.Add(new CommandBinding(ControlCommands.Clear, (s, e) =>
             {
-                if (IsReadOnly)
-                    return;
+                if (IsReadOnly) return;
 
                 SetCurrentValue(ValueProperty, ValueBoxes.Double0Box);
                 _textBox.Text = string.Empty;
@@ -116,8 +112,7 @@ namespace HandyControl.Controls
 
         private void TextBox_PreviewKeyDown(object sender, KeyEventArgs e)
         {
-            if (IsReadOnly)
-                return;
+            if (IsReadOnly) return;
 
             if (e.Key == Key.Up)
             {
@@ -135,7 +130,7 @@ namespace HandyControl.Controls
         {
             base.OnMouseWheel(e);
 
-            if (_textBox.IsFocused&&IsReadOnly==false)
+            if (_textBox.IsFocused && !IsReadOnly)
             {
                 Value += e.Delta > 0 ? Increment : -Increment;
                 _textBox.Text = CurrentText;
@@ -375,22 +370,21 @@ namespace HandyControl.Controls
             set => SetValue(ShowClearButtonProperty, value); 
         }
 
+        /// <summary>
+        ///     标识 IsReadOnly 依赖属性。
+        /// </summary>
+        public static readonly DependencyProperty IsReadOnlyProperty = DependencyProperty.Register(
+            "IsReadOnly", typeof(bool), typeof(NumericUpDown), new PropertyMetadata(ValueBoxes.FalseBox));
+
         /// <summary>
         ///     获取或设置一个值，该值指示NumericUpDown是否只读。
         /// </summary>
         public bool IsReadOnly
         {
-            get => (bool)GetValue(IsReadOnlyProperty);
+            get => (bool) GetValue(IsReadOnlyProperty);
             set => SetValue(IsReadOnlyProperty, value);
         }
 
-        /// <summary>
-        ///     标识 IsReadOnly 依赖属性。
-        /// </summary>
-        public static readonly DependencyProperty IsReadOnlyProperty =
-            DependencyProperty.Register(nameof(IsReadOnly), typeof(bool), typeof(NumericUpDown), new PropertyMetadata(default(bool)));
-
-
         public Func<string, OperationResult<bool>> VerifyFunc { get; set; }
 
         public virtual bool VerifyData()