[英]How to change image of listbox item on selection change Wp8
I have to show a listbox which have UI similar as below: 我必须显示一个列表框,其UI如下所示:
On selection change of list box item I can change the background and foreground of list box item. 在选择列表框项目时,我可以更改列表框项目的背景和前景。 But i need to change the image also. 但我还需要更改图像。 On selection change the image should change and when i select other item the previous item image should get reset and next selected item image should get change. 在选择更改时,图像应更改,并且当我选择其他项目时,上一个项目图像应被重置,而下一个所选项目图像应被更改。
Is it possible? 可能吗? How can I do this? 我怎样才能做到这一点?
EDIT 1: the data template I am using for 编辑1:我正在使用的数据模板
<DataTemplate x:Key="SideListTemplate">
<StackPanel Orientation="Vertical" Margin="0" Height="73">
<StackPanel Orientation="Horizontal" VerticalAlignment="Center" Margin="10">
<Image Width="50" VerticalAlignment="Center"
Height="50" Source="{Binding OptionImageSource}"></Image>
<TextBlock Margin="20,0,0,0" VerticalAlignment="Center"
Text="{Binding OptionName}" FontSize="25"></TextBlock>
</StackPanel>
<Image Height="1" Source="/Assets/Images/SideBar/CL_divider_line.png"></Image>
</StackPanel>
</DataTemplate>
and the style I am using is: 我正在使用的样式是:
<Style x:Key="SelectedItemStyle" TargetType="ListBoxItem">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalContentAlignment" Value="Top"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border x:Name="LayoutRoot" BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}"
HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
VerticalAlignment="{TemplateBinding VerticalAlignment}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver"/>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="LayoutRoot">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource TransparentBrush}"/>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimation Duration="0" To=".5" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="ContentContainer"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected">
<Storyboard>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="ContentContainer"
Storyboard.TargetProperty="Foreground"
Duration="0">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="#3A3939"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Selected">
<Storyboard>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="ContentContainer"
Storyboard.TargetProperty="Foreground"
Duration="0">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="#FFFFFF"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="border"
Storyboard.TargetProperty="Background"
Duration="0">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="#0659B7"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<StackPanel x:Name="border" Orientation="Horizontal">
<ContentControl x:Name="ContentContainer"
ContentTemplate="{TemplateBinding ContentTemplate}"
Content="{TemplateBinding Content}"
Foreground="{TemplateBinding Foreground}"
HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
Margin="{TemplateBinding Padding}"
VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
</StackPanel>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
The xaml code is: xaml代码是:
<ListBox Name="listSideOptions"
ItemContainerStyle="{StaticResource SelectedItemStyle}"
ItemTemplate="{StaticResource SideListTemplate}">
</ListBox>
Thanks Deepti 谢谢Deepti
try this 尝试这个
private void listname_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
(((sender.Content as StackPanel).Children[0] as StackPanel).Children[0] as Image).Source
= //Whatever the new source is;
listSideOptions.SelectedIndex = -1;
}
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