Question

我在Windows应用商店应用项目中有以下ListBox

<ListBox x:Name="ContractIndicators"  Grid.Row="2" ItemsSource="{Binding Indicators, ElementName=pageRoot}" SelectedItem="{Binding SelectedIndicator, ElementName=pageRoot, Mode=TwoWay}"
             ItemContainerStyle="{StaticResource ItemStyle}" ItemTemplate="{StaticResource ItemTemplate}"   />

使用这种风格

<Style x:Key="ItemStyle" TargetType="ListBoxItem">
    <Setter Property="Height" Value="60" />
    <Setter Property="Width" Value="60" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="ListBoxItem">
                <Grid Background="{TemplateBinding Background}">
                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="SelectionStates" >
                            <VisualState x:Name="Unselected" />
                            <VisualState x:Name="Selected">
                                <Storyboard>
                                    <ColorAnimation Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(Rectangle.Fill).(SolidColorBrush.Color)" BeginTime="00:00:00" Duration="0" To="{StaticResource AccentColor}" />
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="SelectedUnfocused">
                                <Storyboard>
                                    <ColorAnimation Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(Rectangle.Fill).(SolidColorBrush.Color)" BeginTime="00:00:00" Duration="0"  To="{StaticResource AccentColor}" />
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="SelectedPressed">
                                <Storyboard>
                                    <ColorAnimation Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(Rectangle.Fill).(SolidColorBrush.Color)" BeginTime="00:00:00" Duration="0"  To="{StaticResource AccentColor}" />
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="SelectedPointerOver">
                                <Storyboard>
                                    <ColorAnimation Storyboard.TargetName="fillColor" Storyboard.TargetProperty="(Rectangle.Fill).(SolidColorBrush.Color)" BeginTime="00:00:00" Duration="0"  To="{StaticResource AccentColor}" />
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                    </VisualStateManager.VisualStateGroups>
                    <Rectangle x:Name="fillColor" IsHitTestVisible="False" Fill="Transparent" Margin="5"
                               Width="{Binding Width, RelativeSource={RelativeSource TemplatedParent}}"
                               Height="{Binding Height, RelativeSource={RelativeSource TemplatedParent}}" />
                    <ContentPresenter Content="{Binding}" />
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

ListBox有一个bide to

private ObservableCollection<object> indicators = new ObservableCollection<object>();

这是集合包含的项目类型

public class Indicator
{
    public string Image { get; set; }

    public Indicator(string image)
    {
        Image = image;
    }
}

我想要的是更改ListBox中所选项目内的图像字段我怎么能这样做？

ListBox 这就是我的ListBox显示的内容，我想要的是拥有绿色图标，具体取决于所选的项目如果我点击第4项，该项目将传递给绿色这将意味着我的指标对象中位于该索引的ListBox内的Image字段将被更新

在ListBox中更改项值

0 个答案: