Question

如何更改silverlight datagrid header的背景

Answer 1

摘自：http://www.cnblogs.com/yinxiangpei/articles/2629050.html
header的背景颜色要在模板里改，可以参考下面这个样式修改
<Style x:Key="gridheader" TargetType="sdk:DataGridColumnHeader">
<Setter Property="Foreground" Value="#FFB5B5B5" />
<Setter Property="HorizontalContentAlignment" Value="Center" />
<Setter Property="VerticalContentAlignment" Value="Center" />
<Setter Property="FontSize" Value="10.5" />
<Setter Property="FontWeight" Value="Bold" />
<Setter Property="IsTabStop" Value="False" />
<Setter Property="SeparatorBrush" Value="#FFDFE3E6" />
<Setter Property="Padding" Value="4,4,5,4" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="sdk:DataGridColumnHeader">
<Grid Name="Root">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="00:00:0.1" />
</VisualStateGroup.Transitions>
<VisualState x:Name="Normal" />
<VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimationUsingKeyFrames BeginTime="0" Duration="0" Storyboard.TargetName="BackgroundRectangle" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="0" Value="#FF314D64"/>
</ColorAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames BeginTime="0" Duration="0" Storyboard.TargetName="BackgroundGradient" Storyboard.TargetProperty="(Shape.Fill).(GradientBrush.GradientStops)[3].(GradientStop.Color)">
<SplineColorKeyFrame KeyTime="0" Value="#4C363B5C"/>
</ColorAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames BeginTime="0" Duration="0" Storyboard.TargetName="BackgroundGradient" Storyboard.TargetProperty="(Shape.Fill).(GradientBrush.GradientStops)[2].(GradientStop.Color)">
<SplineColorKeyFrame KeyTime="0" Value="#7F363B5C"/>
</ColorAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames BeginTime="0" Duration="0" Storyboard.TargetName="BackgroundGradient" Storyboard.TargetProperty="(Shape.Fill).(GradientBrush.GradientStops)[1].(GradientStop.Color)">
<SplineColorKeyFrame KeyTime="0" Value="#F2FFFFFF"/>
</ColorAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="BackgroundGradient" Storyboard.TargetProperty="(Shape.Fill).(GradientBrush.GradientStops)[0].(GradientStop.Color)">
<SplineColorKeyFrame KeyTime="00:00:00" Value="#FF363B5C"/>
</ColorAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="BackgroundGradient" Storyboard.TargetProperty="(Shape.Fill).(GradientBrush.GradientStops)[0].(GradientStop.Offset)">
<SplineDoubleKeyFrame KeyTime="00:00:00" Value="0.013"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SortStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="00:00:0.1" />
</VisualStateGroup.Transitions>
<VisualState x:Name="Unsorted" />
<VisualState x:Name="SortAscending">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="SortIcon" Storyboard.TargetProperty="Opacity" Duration="0" To="1.0"/>
</Storyboard>
</VisualState>
<VisualState x:Name="SortDescending">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="SortIcon" Storyboard.TargetProperty="Opacity" Duration="0" To="1.0"/>
<DoubleAnimation Storyboard.TargetName="SortIconTransform" Storyboard.TargetProperty="ScaleY" Duration="0" To="-.9"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>

<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>

<Rectangle x:Name="BackgroundRectangle" Stretch="Fill" Fill="#FF33C421" Grid.ColumnSpan="2" Grid.RowSpan="2"/>

<Rectangle x:Name="BackgroundGradient" Stretch="Fill" Grid.ColumnSpan="2" Grid.RowSpan="2">
<Rectangle.Fill>

<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFA6A6A6"/>
<GradientStop Color="#FF000000" Offset="1"/>
<GradientStop Color="#FF636363" Offset="0.33500000834465027"/>
<GradientStop Color="#FF262626" Offset="0.621"/>
</LinearGradientBrush>

</Rectangle.Fill>
</Rectangle>

<ContentPresenter
Grid.RowSpan="2"
Content="{TemplateBinding Content}"
Cursor="{TemplateBinding Cursor}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
Margin="{TemplateBinding Padding}"/>

<Rectangle Name="VerticalSeparator" Grid.RowSpan="2" Grid.Column="2" Width="1" VerticalAlignment="Stretch" Fill="{TemplateBinding SeparatorBrush}" Visibility="{TemplateBinding SeparatorVisibility}" />

<Path Grid.RowSpan="2" Name="SortIcon" RenderTransformOrigin=".5,.5" HorizontalAlignment="Left" VerticalAlignment="Center" Opacity="0" Grid.Column="1" Stretch="Uniform" Width="8" Data="F1 M -5.215,6.099L 5.215,6.099L 0,0L -5.215,6.099 Z " Fill="#FF82CAAB">
<Path.RenderTransform>
<TransformGroup>
<ScaleTransform x:Name="SortIconTransform" ScaleX=".9" ScaleY=".9" />
</TransformGroup>
</Path.RenderTransform>
</Path>

</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>

</Style>

Answer 2

数据源定义为对象集合，列绑定的时候绑定为Binding="{Binding Index，Mode=TwoWay}"
声明对象时，需要实现INotifyPropertyChanged接口，这样当数据源发生变化的时候会自动通知UI