我在网上抄了一段代码。不过这个的话scrollbar的上下按钮和滚动条都是用的系统默认的我的需求要都是填充的图片。我<ImageBrush>的方式Fill="{StaticResource Fill="{StaticResource ScrollBar}">或在<Image HorizontalAlignment="Left" Source="../img/scroll_bg.png" Stretch="None"/>都显示不了图片啊。为何，请高手指点。<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
>
//自己加
<ImageBrush x:Key="ScrollMid" x:Name="DynamicBrush" TileMode="Tile"
ViewportUnits="Absolute" Viewport="0 0 32 32"
ImageSource="../img/scroll_middle.png" Opacity="0.3" ></ImageBrush>
<ImageBrush x:Key="ScrollBar" x:Name="ScBar" TileMode="Tile"
ViewportUnits="Absolute" Viewport="0 0 32 32"
ImageSource="../img/scroll_bg.png" Opacity="0.3" ></ImageBrush>
<SolidColorBrush x:Key="StandardBorderBrush" Color="#888" />
<SolidColorBrush x:Key="StandardBackgroundBrush" Color="#FFF" />
<SolidColorBrush x:Key="HoverBorderBrush" Color="#DDD" />
<SolidColorBrush x:Key="SelectedBackgroundBrush" Color="Gray" />
<SolidColorBrush x:Key="SelectedForegroundBrush" Color="White" />
<LinearGradientBrush x:Key="ListBoxBackgroundBrush" StartPoint="0,0" EndPoint="1,0.001">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="White" Offset="0.0" />
<GradientStop Color="White" Offset="0.6" />
<GradientStop Color="#DDDDDD" Offset="1.2"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="StandardBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#CCC" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush> <SolidColorBrush x:Key="GlyphBrush" Color="#444" />
<LinearGradientBrush x:Key="PressedBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#BBB" Offset="0.0"/>
<GradientStop Color="#EEE" Offset="0.1"/>
<GradientStop Color="#EEE" Offset="0.9"/>
<GradientStop Color="#FFF" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush> <Style x:Key="ScrollBarLineButtonStyle" TargetType="{x:Type RepeatButton}">
<Setter Property="Focusable" Value="False"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RepeatButton}">
<Grid Margin="1">
<Ellipse Name="Border" StrokeThickness="1" Stroke="{StaticResource StandardBorderBrush}"
Fill="{StaticResource StandardBrush}"></Ellipse>
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"></ContentPresenter>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsPressed" Value="true">
<Setter TargetName="Border" Property="Fill" Value="{StaticResource PressedBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style x:Key="ScrollBarPageButtonStyle" TargetType="{x:Type RepeatButton}">
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="Focusable" Value="False"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RepeatButton}">
<Border Background="Transparent" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style x:Key="ScrollBarThumbStyle" TargetType="{x:Type Thumb}">
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="Focusable" Value="False"/>
<Setter Property="Margin" Value="1,0,1,0" />
<Setter Property="Background" Value="{StaticResource StandardBrush}" />
<Setter Property="BorderBrush" Value="{StaticResource StandardBorderBrush}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Thumb}">
<Ellipse Stroke="{StaticResource StandardBorderBrush}"
Fill="{StaticResource StandardBrush}"></Ellipse>
<!--<Image HorizontalAlignment="Left" Source="../img/scroll_bg.png" Stretch="None"/>-->
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <ControlTemplate x:Key="VerticalScrollBar" TargetType="{x:Type ScrollBar}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition MaxHeight="18"/>
<RowDefinition Height="*"/>
<RowDefinition MaxHeight="18"/>
</Grid.RowDefinitions> <RepeatButton Grid.Row="0" Height="18"
Style="{StaticResource ScrollBarLineButtonStyle}"
Command="ScrollBar.LineUpCommand" >
<Path
Fill="{StaticResource GlyphBrush}"
Data="M 0 4 L 8 4 L 4 0 Z"></Path>
</RepeatButton>
<Track Name="PART_Track" Grid.Row="1"
IsDirectionReversed="True" ViewportSize="0">
<Track.DecreaseRepeatButton>
<RepeatButton Command="ScrollBar.PageUpCommand" Style="{StaticResource ScrollBarPageButtonStyle}">
</RepeatButton>
</Track.DecreaseRepeatButton>
<Track.Thumb>
<Thumb Style="{StaticResource ScrollBarThumbStyle}">
</Thumb>
</Track.Thumb>
<Track.IncreaseRepeatButton>
<RepeatButton Command="ScrollBar.PageDownCommand" Style="{StaticResource ScrollBarPageButtonStyle}">
</RepeatButton>
</Track.IncreaseRepeatButton>
</Track>
<RepeatButton
Grid.Row="3" Height="18"
Style="{StaticResource ScrollBarLineButtonStyle}"
Command="ScrollBar.LineDownCommand">
<Path
Fill="{StaticResource GlyphBrush}"
Data="M 0 0 L 4 4 L 8 0 Z"></Path>
</RepeatButton>
</Grid>
</ControlTemplate>
<Style TargetType="{x:Type ScrollBar}">
<Setter Property="SnapsToDevicePixels" Value="True"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Style.Triggers> <Trigger Property="Orientation" Value="Vertical">
<Setter Property="Width" Value="18"/>
<Setter Property="Height" Value="Auto" />
<Setter Property="Template" Value="{StaticResource VerticalScrollBar}" />
</Trigger>
</Style.Triggers>
</Style>
<Style TargetType="{x:Type ListBox}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBox}">
<Border
Name="Border"
Background="{StaticResource ListBoxBackgroundBrush}"
BorderBrush="{StaticResource StandardBorderBrush}"
BorderThickness="1"
CornerRadius="3">
<ScrollViewer
Focusable="False">
<ItemsPresenter Margin="2"></ItemsPresenter>
</ScrollViewer>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
>
//自己加
<ImageBrush x:Key="ScrollMid" x:Name="DynamicBrush" TileMode="Tile"
ViewportUnits="Absolute" Viewport="0 0 32 32"
ImageSource="../img/scroll_middle.png" Opacity="0.3" ></ImageBrush>
<ImageBrush x:Key="ScrollBar" x:Name="ScBar" TileMode="Tile"
ViewportUnits="Absolute" Viewport="0 0 32 32"
ImageSource="../img/scroll_bg.png" Opacity="0.3" ></ImageBrush>
<SolidColorBrush x:Key="StandardBorderBrush" Color="#888" />
<SolidColorBrush x:Key="StandardBackgroundBrush" Color="#FFF" />
<SolidColorBrush x:Key="HoverBorderBrush" Color="#DDD" />
<SolidColorBrush x:Key="SelectedBackgroundBrush" Color="Gray" />
<SolidColorBrush x:Key="SelectedForegroundBrush" Color="White" />
<LinearGradientBrush x:Key="ListBoxBackgroundBrush" StartPoint="0,0" EndPoint="1,0.001">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="White" Offset="0.0" />
<GradientStop Color="White" Offset="0.6" />
<GradientStop Color="#DDDDDD" Offset="1.2"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="StandardBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#CCC" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush> <SolidColorBrush x:Key="GlyphBrush" Color="#444" />
<LinearGradientBrush x:Key="PressedBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#BBB" Offset="0.0"/>
<GradientStop Color="#EEE" Offset="0.1"/>
<GradientStop Color="#EEE" Offset="0.9"/>
<GradientStop Color="#FFF" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush> <Style x:Key="ScrollBarLineButtonStyle" TargetType="{x:Type RepeatButton}">
<Setter Property="Focusable" Value="False"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RepeatButton}">
<Grid Margin="1">
<Ellipse Name="Border" StrokeThickness="1" Stroke="{StaticResource StandardBorderBrush}"
Fill="{StaticResource StandardBrush}"></Ellipse>
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"></ContentPresenter>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsPressed" Value="true">
<Setter TargetName="Border" Property="Fill" Value="{StaticResource PressedBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style x:Key="ScrollBarPageButtonStyle" TargetType="{x:Type RepeatButton}">
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="Focusable" Value="False"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RepeatButton}">
<Border Background="Transparent" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style x:Key="ScrollBarThumbStyle" TargetType="{x:Type Thumb}">
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="Focusable" Value="False"/>
<Setter Property="Margin" Value="1,0,1,0" />
<Setter Property="Background" Value="{StaticResource StandardBrush}" />
<Setter Property="BorderBrush" Value="{StaticResource StandardBorderBrush}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Thumb}">
<Ellipse Stroke="{StaticResource StandardBorderBrush}"
Fill="{StaticResource StandardBrush}"></Ellipse>
<!--<Image HorizontalAlignment="Left" Source="../img/scroll_bg.png" Stretch="None"/>-->
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <ControlTemplate x:Key="VerticalScrollBar" TargetType="{x:Type ScrollBar}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition MaxHeight="18"/>
<RowDefinition Height="*"/>
<RowDefinition MaxHeight="18"/>
</Grid.RowDefinitions> <RepeatButton Grid.Row="0" Height="18"
Style="{StaticResource ScrollBarLineButtonStyle}"
Command="ScrollBar.LineUpCommand" >
<Path
Fill="{StaticResource GlyphBrush}"
Data="M 0 4 L 8 4 L 4 0 Z"></Path>
</RepeatButton>
<Track Name="PART_Track" Grid.Row="1"
IsDirectionReversed="True" ViewportSize="0">
<Track.DecreaseRepeatButton>
<RepeatButton Command="ScrollBar.PageUpCommand" Style="{StaticResource ScrollBarPageButtonStyle}">
</RepeatButton>
</Track.DecreaseRepeatButton>
<Track.Thumb>
<Thumb Style="{StaticResource ScrollBarThumbStyle}">
</Thumb>
</Track.Thumb>
<Track.IncreaseRepeatButton>
<RepeatButton Command="ScrollBar.PageDownCommand" Style="{StaticResource ScrollBarPageButtonStyle}">
</RepeatButton>
</Track.IncreaseRepeatButton>
</Track>
<RepeatButton
Grid.Row="3" Height="18"
Style="{StaticResource ScrollBarLineButtonStyle}"
Command="ScrollBar.LineDownCommand">
<Path
Fill="{StaticResource GlyphBrush}"
Data="M 0 0 L 4 4 L 8 0 Z"></Path>
</RepeatButton>
</Grid>
</ControlTemplate>
<Style TargetType="{x:Type ScrollBar}">
<Setter Property="SnapsToDevicePixels" Value="True"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Style.Triggers> <Trigger Property="Orientation" Value="Vertical">
<Setter Property="Width" Value="18"/>
<Setter Property="Height" Value="Auto" />
<Setter Property="Template" Value="{StaticResource VerticalScrollBar}" />
</Trigger>
</Style.Triggers>
</Style>
<Style TargetType="{x:Type ListBox}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBox}">
<Border
Name="Border"
Background="{StaticResource ListBoxBackgroundBrush}"
BorderBrush="{StaticResource StandardBorderBrush}"
BorderThickness="1"
CornerRadius="3">
<ScrollViewer
Focusable="False">
<ItemsPresenter Margin="2"></ItemsPresenter>
</ScrollViewer>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
原介绍的网址是：http://www.codeproject.com/KB/miscctrl/customscrollbar.aspx
是一个用c#来写的自定义控件，效果图如下
绿白色的区域就是滚动栏(Custom ScrollBar Test)所在的位置，点击右边的标准滚动栏或自定义栏，最左边的Panel都会滚动。控件的作用
比较明确的，如滚动ScrollBar可以滚动所在控件（如Panel）的内容，当Panel的内容过长时，自动显示流动栏，使用鼠标的轮子，也可以滚动控件。
首先说明：一个滚动栏只适合于一个控件,如Panel，TreeView都有其自带的ScrollBar，不要想着写一个ScrollBar可以到处使用，不过，会一种写法，在重用的时候，可能很方便的。设计剖析
简单而言，先定义部件，再增加事件布局
其实ScrollBar可以分为这几个部分，顶点的带图标的小Button,用于点击向上，必要时，鼠标放在上面可以显示不同的图片或颜色；底部带图标的小Button，用于点击时向下，必要时，鼠标放在上面，可以显示不同的图片或颜色；中间的滚动空间，可以使用一个小的Panel来做，根据实现的需要，设置可以带背景颜色的，必要时，鼠标放在上面，可以显示不同的背景；中间滚动的划块，用于拖动使对应的Control显示不同的域，必要时，鼠标放在上面，可以显示不同的颜色。动作
一定有的动作是点击向上，点击向下，拖动和鼠标滚轮，当点击向上时判断Control的位置是否已经到顶了，如果已经到顶了，就不再反应，点击时，必定有一个滚动的大小的设置，表示滚动时，Control可显示域对应的滚动大小。Control是有一上显示域和所有域的属性的，如果显示域可以显示完所有的子控件，则这两个域的大小是一样的，不仅是.Net，就算在C++中，也有对应的两个属性（好像更加容易实现）。点击向下时，原理与向上一样，而拖动就要计算出拖动的距离，从而设置显示域的位置，同时，要滚动ScrollBar，使之与Control的显示域对应，在鼠标悬放在ScrollBar上时，可以显示不同的显示效果。鼠标滚轮可以设置为一个事件，对应的数据中，需要定义滚动一下的距离，这样，才好算出显示域的内容。其它
当前，肯定会有不同的图片设置和高度设置，本控件所表现出来的效果，也不是很尽如人意，事实上，还是要程序员再慢慢研究的。不过，原理是没有错了。
这是什么意思呀