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WPF 全局样式（滚动条）

对整个WPF项目进行样式修改时，采用全局样式的方法。
首先，建一个xaml文件为存放样式的资源文件。写入想修改的控件样式，以滚动条样式为例。
  1 <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  2                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  3                     xmlns:sys="clr-namespace:System;assembly=mscorlib">
  4     <!-- ScrollViewer 滚动条 -->
  5     <Style x:Key="ScrollBarThumb" TargetType="{x:Type Thumb}">
  6         <Setter Property="OverridesDefaultStyle" Value="true"/>
  7         <Setter Property="IsTabStop" Value="false"/>
  8         <Setter Property="Template">
  9             <Setter.Value>
 10                 <ControlTemplate TargetType="{x:Type Thumb}">
 11                     <Grid>
 12                         <!--滚动条颜色-->
 13                         <Border Background="#646465" CornerRadius="3"/>
 14                     </Grid>
 15                 </ControlTemplate>
 16             </Setter.Value>
 17         </Setter>
 18     </Style>
 19     <Style x:Key="HorizontalScrollBarPageButton" TargetType="{x:Type RepeatButton}">
 20         <Setter Property="OverridesDefaultStyle" Value="true"/>
 21         <Setter Property="Background" Value="Transparent"/>
 22         <Setter Property="Focusable" Value="false"/>
 23         <Setter Property="IsTabStop" Value="false"/>
 24         <Setter Property="Opacity" Value="0.2"/>
 25         <Setter Property="Template">
 26             <Setter.Value>
 27                 <ControlTemplate TargetType="{x:Type RepeatButton}">
 28                     <Rectangle Fill="{TemplateBinding Background}" Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"/>
 29                 </ControlTemplate>
 30             </Setter.Value>
 31         </Setter>
 32     </Style>
 33     <Style x:Key="VerticalScrollBarPageButton" TargetType="{x:Type RepeatButton}">
 34         <Setter Property="OverridesDefaultStyle" Value="true"/>
 35         <Setter Property="Background" Value="Transparent"/>
 36         <Setter Property="Focusable" Value="false"/>
 37         <Setter Property="IsTabStop" Value="false"/>
 38         <Setter Property="Opacity" Value="0.2"/>
 39         <Setter Property="Template">
 40             <Setter.Value>
 41                 <ControlTemplate TargetType="{x:Type RepeatButton}">
 42                     <Rectangle Fill="{TemplateBinding Background}" Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"/>
 43                 </ControlTemplate>
 44             </Setter.Value>
 45         </Setter>
 46     </Style>
 47 
 48     <!--滚动条上下按钮-->
 49     <Style x:Key="VerticalScrollBarPageButton2" TargetType="{x:Type RepeatButton}">
 50         <Setter Property="OverridesDefaultStyle"  Value="true"/>
 51         <Setter Property="Background" Value="Transparent"/>
 52         <Setter Property="Focusable" Value="false"/>
 53         <Setter Property="IsTabStop" Value="false"/>
 54         <Setter Property="Opacity"  Value="0"/>
 55         <Setter Property="Template">
 56             <Setter.Value>
 57                 <ControlTemplate TargetType="{x:Type RepeatButton}">
 58                     <Rectangle Fill="#90000000" Width="0" Height="0"/>
 59                 </ControlTemplate>
 60             </Setter.Value>
 61         </Setter>
 62     </Style>
 63     <Style x:Key="for_scrollbar" TargetType="{x:Type ScrollBar}">
 64         <Setter Property="Stylus.IsPressAndHoldEnabled" Value="false"/>
 65         <Setter Property="Stylus.IsFlicksEnabled" Value="false"/>
 66         <Setter Property="Background" Value="Transparent"/>
 67         <Setter Property="Margin" Value="0,1,1,6"/>
 68         <Setter Property="Width"  Value="10"/>
 69         <Setter Property="MinWidth"  Value="5"/>
 70         <Setter Property="Opacity"   Value="0.2"/>
 71         <Setter Property="Template">
 72             <Setter.Value>
 73                 <ControlTemplate TargetType="{x:Type ScrollBar}">
 74                     <Grid x:Name="Bg" SnapsToDevicePixels="true">
 75                         <Grid.RowDefinitions>
 76                             <RowDefinition Height="auto"></RowDefinition>
 77                             <RowDefinition Height="*"></RowDefinition>
 78                             <RowDefinition Height="auto"></RowDefinition>
 79                         </Grid.RowDefinitions>
 80                         <RepeatButton  Grid.Row="0" Style="{StaticResource VerticalScrollBarPageButton2}" Command="{x:Static ScrollBar.PageUpCommand}"/>
 81                         <Track x:Name="PART_Track"   Grid.Row="1" IsEnabled="{TemplateBinding IsMouseOver}" IsDirectionReversed="true">
 82                             <Track.DecreaseRepeatButton>
 83                                 <RepeatButton Style="{StaticResource VerticalScrollBarPageButton}" Command="{x:Static ScrollBar.PageUpCommand}"/>
 84                             </Track.DecreaseRepeatButton>
 85                             <Track.IncreaseRepeatButton>
 86                                 <RepeatButton Style="{StaticResource VerticalScrollBarPageButton}" Command="{x:Static ScrollBar.PageDownCommand}"/>
 87                             </Track.IncreaseRepeatButton>
 88                             <Track.Thumb>
 89                                 <Thumb Style="{StaticResource ScrollBarThumb}"/>
 90                             </Track.Thumb>
 91                         </Track>
 92                         <RepeatButton Grid.Row="2" Style="{StaticResource VerticalScrollBarPageButton2}" Command="{x:Static ScrollBar.PageDownCommand}"/>
 93                     </Grid>
 94                 </ControlTemplate>
 95             </Setter.Value>
 96         </Setter>
 97         <Style.Triggers>
 98             <Trigger Property="Orientation" Value="Horizontal">
 99                 <Setter Property="Background"  Value="Transparent"/>
100                 <Setter Property="Margin" Value="1,0,6,1"/>
101                 <Setter Property="Height"   Value="5"/>
102                 <Setter Property="MinHeight"  Value="5"/>
103                 <Setter Property="Width"    Value="Auto"/>
104                 <Setter Property="Opacity" Value="0.2"/>
105                 <Setter Property="Template">
106                     <Setter.Value>
107                         <ControlTemplate TargetType="{x:Type ScrollBar}">
108                             <Grid x:Name="Bg" SnapsToDevicePixels="true">
109                                 <Track x:Name="PART_Track" IsEnabled="{TemplateBinding IsMouseOver}">
110                                     <Track.DecreaseRepeatButton>
111                                         <RepeatButton Style="{StaticResource HorizontalScrollBarPageButton}"  Command="{x:Static ScrollBar.PageLeftCommand}"/>
112                                     </Track.DecreaseRepeatButton>
113                                     <Track.IncreaseRepeatButton>
114                                         <RepeatButton Style="{StaticResource HorizontalScrollBarPageButton}"  Command="{x:Static ScrollBar.PageRightCommand}"/>
115                                     </Track.IncreaseRepeatButton>
116                                     <Track.Thumb>
117                                         <Thumb Style="{StaticResource ScrollBarThumb}"/>
118                                     </Track.Thumb>
119                                 </Track>
120                             </Grid>
121                         </ControlTemplate>
122                     </Setter.Value>
123                 </Setter>
124             </Trigger>
125         </Style.Triggers>
126     </Style>
127     <Style x:Key="for_scrollviewer"
128            TargetType="{x:Type ScrollViewer}">
129         <Setter Property="BorderBrush" Value="LightGray"/>
130         <Setter Property="BorderThickness" Value="0"/>
131         <Setter Property="Template">
132             <Setter.Value>
133                 <ControlTemplate TargetType="{x:Type ScrollViewer}">
134                     <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" SnapsToDevicePixels="True">
135                         <Grid Background="{TemplateBinding Background}">
136                             <ScrollContentPresenter  Cursor="{TemplateBinding Cursor}" Margin="{TemplateBinding Padding}" ContentTemplate="{TemplateBinding ContentTemplate}"/>
137                             <ScrollBar x:Name="PART_VerticalScrollBar"
138                                        HorizontalAlignment="Right"
139                                        Maximum="{TemplateBinding ScrollableHeight}"
140                                        Orientation="Vertical"
141                                        Style="{StaticResource for_scrollbar}"
142                                        ViewportSize="{TemplateBinding ViewportHeight}"
143                                        Value="{TemplateBinding VerticalOffset}"
144                                        Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"/>
145                             <ScrollBar x:Name="PART_HorizontalScrollBar"
146                                        Maximum="{TemplateBinding ScrollableWidth}"
147                                        Orientation="Horizontal"
148                                        Style="{StaticResource for_scrollbar}"
149                                        VerticalAlignment="Bottom"
150                                        Value="{TemplateBinding HorizontalOffset}"
151                                        ViewportSize="{TemplateBinding ViewportWidth}"
152                                        Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"/>
153                         </Grid>
154                     </Border>
155                     <ControlTemplate.Triggers>
156                         <EventTrigger RoutedEvent="ScrollChanged" >
157                             <BeginStoryboard>
158                                 <Storyboard>
159                                     <DoubleAnimation
160                                         Storyboard.TargetName="PART_VerticalScrollBar"
161                                         Storyboard.TargetProperty="Opacity"
162                                         To="0.8"
163                                         Duration="0:0:1"/>
164                                     <DoubleAnimation
165                                         Storyboard.TargetName="PART_VerticalScrollBar"
166                                         Storyboard.TargetProperty="Opacity"
167                                         To="0.2"
168                                         Duration="0:0:1"
169                                         BeginTime="0:0:1"/>
170                                     <DoubleAnimation
171                                         Storyboard.TargetName="PART_HorizontalScrollBar"
172                                         Storyboard.TargetProperty="Opacity"
173                                         To="0.8"
174                                         Duration="0:0:1"/>
175                                     <DoubleAnimation
176                                         Storyboard.TargetName="PART_HorizontalScrollBar"
177                                         Storyboard.TargetProperty="Opacity"
178                                         To="0.2"
179                                         Duration="0:0:1"
180                                         BeginTime="0:0:1"/>
181                                 </Storyboard>
182                             </BeginStoryboard>
183                         </EventTrigger>
184                         <EventTrigger RoutedEvent="MouseEnter"
185                                       SourceName="PART_VerticalScrollBar">
186                             <BeginStoryboard>
187                                 <Storyboard>
188                                     <DoubleAnimation
189                                         Storyboard.TargetName="PART_VerticalScrollBar"
190                                         Storyboard.TargetProperty="Opacity"
191                                         To="0.8"
192                                         Duration="0:0:0.7"/>
193                                 </Storyboard>
194                             </BeginStoryboard>
195                         </EventTrigger>
196                         <EventTrigger RoutedEvent="MouseLeave"
197                                       SourceName="PART_VerticalScrollBar">
198                             <BeginStoryboard>
199                                 <Storyboard>
200                                     <DoubleAnimation
201                                         Storyboard.TargetName="PART_VerticalScrollBar"
202                                         Storyboard.TargetProperty="Opacity"
203                                         To="0.2"
204                                         Duration="0:0:0.7"/>
205                                 </Storyboard>
206                             </BeginStoryboard>
207                         </EventTrigger>
208                         <EventTrigger RoutedEvent="MouseEnter"
209                                       SourceName="PART_HorizontalScrollBar">
210                             <BeginStoryboard>
211                                 <Storyboard>
212                                     <DoubleAnimation
213                                         Storyboard.TargetName="PART_HorizontalScrollBar"
214                                         Storyboard.TargetProperty="Opacity"
215                                         To="0.8"
216                                         Duration="0:0:0.7"/>
217                                 </Storyboard>
218                             </BeginStoryboard>
219                         </EventTrigger>
220                         <EventTrigger RoutedEvent="MouseLeave"
221                                       SourceName="PART_HorizontalScrollBar">
222                             <BeginStoryboard>
223                                 <Storyboard>
224                                     <DoubleAnimation
225                                         Storyboard.TargetName="PART_HorizontalScrollBar"
226                                         Storyboard.TargetProperty="Opacity"
227                                         To="0.2"
228                                         Duration="0:0:0.7"/>
229                                 </Storyboard>
230                             </BeginStoryboard>
231                         </EventTrigger>
232                     </ControlTemplate.Triggers>
233                 </ControlTemplate>
234             </Setter.Value>
235         </Setter>
236     </Style>
237 
238    
239 </ResourceDictionary>
View Code
然后，在App.xaml里添加对资源文件的引用，<ResourceDictionary Source="pack://application:,,,/Resource/Scroll.xaml"/>。
最后，将控件样式修改为自定义样式， <Style TargetType="ScrollBar" BasedOn="{StaticResource for_scrollbar}"/>
<Style TargetType="ScrollViewer" BasedOn="{StaticResource for_scrollviewer}"/>。
这样整个项目中的控件就会都变成自己想要的样式了。
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原文地址：https://www.cnblogs.com/lskFighting/p/12771492.html