编辑ColumnDataPoint默认的style，添加一个textblock，绑定到FormattedDependentValue属性上。用Blend比较方便
<Style x:Key="ColumnDataPointStyle1" TargetType="toolkit:ColumnDataPoint">
<Setter Property="Background" Value="Orange"/>
<Setter Property="BorderBrush" Value="Black"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="toolkit:ColumnDataPoint">
<Border x:Name="Root" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Opacity="0">
<ToolTipService.ToolTip>
<ContentControl Content="{TemplateBinding FormattedDependentValue}"/>
</ToolTipService.ToolTip>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:0.1"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver">
<Storyboard>
<DoubleAnimation Duration="0" To="0.6" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="MouseOverHighlight"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:0.1"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="Unselected"/>
<VisualState x:Name="Selected">
<Storyboard>
<DoubleAnimation Duration="0" To="0.6" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="SelectionHighlight"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="RevealStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:0.5"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="Shown">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Root"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Hidden">
<Storyboard>
<DoubleAnimation Duration="0" To="0" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Root"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid Background="{TemplateBinding Background}">
<TextBlock Text="{TemplateBinding FormattedDependentValue}" Canvas.ZIndex="100"/>
<Rectangle>
<Rectangle.Fill>
<LinearGradientBrush>
<GradientStop Color="#77ffffff" Offset="0"/>
<GradientStop Color="#00ffffff" Offset="1"/>
</LinearGradientBrush>
</Rectangle.Fill>
</Rectangle>
<Border BorderBrush="#ccffffff" BorderThickness="1">
<Border BorderBrush="#77ffffff" BorderThickness="1"/>
</Border>
<Rectangle x:Name="SelectionHighlight" Fill="Red" Opacity="0"/>
<Rectangle x:Name="MouseOverHighlight" Fill="White" Opacity="0"/>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Mog Liang
