用过Silverlight都知道，在Silverlight控件中没有类似于Asp。net中的单选按钮组RadioButtonList和复选按钮组CheckBoxList。
下面就要利用ListBox来实现单选按钮组RadioButtonList和复选按钮组CheckBoxList。
ListBox中有一个SelectionMode的属性来设置单选还是复选，所以我们只需要一个控件就可分别实现RadioButtonList和CheckBoxList两个控件的功能。
代码如下：
public class SysChecks : ListBox
{
public SysChecks()
{
this.DefaultStyleKey = typeof(SysChecks);
HorizontalAlignment = HorizontalAlignment.Stretch;
VerticalAlignment = VerticalAlignment.Stretch;
}
public override void OnApplyTemplate()
{
//根据单选复选设置不同样式
if (SelectionMode == SelectionMode.Single)
{
this.ItemContainerStyle = HtmlUtility.GetStyle("RadioButtonItem");
}
else if (SelectionMode == SelectionMode.Multiple)
{
this.ItemContainerStyle = HtmlUtility.GetStyle("CheckBoxItem");
}
base.OnApplyTemplate();
}
}
样式代码如下
<Style TargetType="local:SysChecks">
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal" VerticalAlignment="Top" />
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
</Style>
<!--单选按钮样式-->
<Style x:Key="RadioButtonItem" TargetType="ListBoxItem">
<Setter Property="Template" >
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem" >
<Grid Background="{TemplateBinding Background}" Height="25" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="Center">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="MouseOver">
<Storyboard>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="contentPresenter" Storyboard.TargetProperty="Opacity" Duration="0" To=".55" />
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected" />
<VisualState x:Name="Selected">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="CheckIcon" Storyboard.TargetProperty="(UIElement.Opacity)" Duration="0" To="1"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Ellipse x:Name="BoxOuter" Width="14" Height="14" Stroke="#000000" StrokeThickness="1" />
<Ellipse x:Name="BoxMiddle" Width="12" Height="12" Fill="#FFFFFFFF" Stroke="#FFC4DBEE" StrokeThickness="1" />
<Ellipse x:Name="CheckIcon" Fill="#FF333333" Width="6" Height="6" Opacity="0" />
<ContentPresenter Grid.Column="1"
x:Name="contentPresenter"
Content="{TemplateBinding Content}"
VerticalAlignment="Center"
Margin="{TemplateBinding Padding}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<!--复选按钮样式-->
<Style x:Key="CheckBoxItem" TargetType="ListBoxItem">
<Setter Property="Template" >
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem" >
<Grid Background="{TemplateBinding Background}" Height="25" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="Top">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="MouseOver">
<Storyboard>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="contentPresenter" Storyboard.TargetProperty="Opacity" Duration="0" To=".55" />
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected" />
<VisualState x:Name="Selected">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="CheckIcon" Storyboard.TargetProperty="(UIElement.Opacity)" Duration="0" To="1"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle x:Name="BoxMiddle" Width="14" Height="14" Fill="#FFFFFFFF" Stroke="#FFC4DBEE" StrokeThickness="1" />
<Path x:Name="CheckIcon" Margin="1,1,0,1.5" Fill="#FF333333" Stretch="Fill" Opacity="0" Width="10.5" Height="10"
Data="M102.03442,598.79645 L105.22962,597.78918 L106.78825,600.42358 C106.78825,600.42358 108.51028,595.74304 110.21724,593.60419 C112.00967,591.35822 114.89314,591.42316 114.89314,591.42316 C114.89314,591.42316 112.67844,593.42645 111.93174,594.44464 C110.7449,596.06293 107.15683,604.13837 107.15683,604.13837 z"
FlowDirection="LeftToRight"/>
<ContentPresenter Grid.Column="1"
x:Name="contentPresenter"
Content="{TemplateBinding Content}"
ContentTemplate="{TemplateBinding ContentTemplate}"
VerticalAlignment="Center"
Margin="{TemplateBinding Padding}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
效果如如下
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