我使用基于
的列表中的数据填充了gridview public class Players
{
public int id { get; set; }
public string level { get; set; }
public string image { get; set; }
public List<string> name { get; set; }
}
使用
players = await Operations.GetPlayersAsync(Currentlevel);
ViewPlayers.ItemsSource = players;
GridView的Xaml
<DataTemplate x:Key="ImageGalleryDataTemplate">
<Border Background="#FF939598">
<Image Margin="20,20,20,20" Source="{Binding image}" Height="250" Width="150" Stretch="Fill"/>
</Border>
</DataTemplate>
<GridView x:Name="ViewPlayers" IsItemClickEnabled="True"
ItemTemplate="{StaticResource ImageGalleryDataTemplate}" SelectionMode="None" ItemClick="PlayerClick">
</GridView>
网格视图正确加载数据，并显示所有项目，我可以单击它们，并执行必要的任务。
我有一个Sqllite数据库，用于存储格式
的数据public class userData
{[PrimaryKey, AutoIncrement]
public int id { get; set; }
public bool answered { get; set; }
[Unique] public string pid { get; set; }
public string answer { get; set; }
}
我尝试实现的是禁用玩家的 IsItemClickEnabled 属性（使用 GetPlayersAsync 功能填充）回答（bool值 true ）。我可以从Sqllite数据中获取数据，比较并获取要禁用的所有项目（玩家ID）。 但我无法禁用特定的播放器 IsItemClickEnabled 属性。
我用可能的关键字搜索MSDN，Stackoverflow，但找不到动态控制GridView或ItemView的ItemsSource中所选项的解决方案。
答案 0 :(得分：0)
您应该检查项目是否在方法PlayerClick中被回答。
private void ListViewBase_OnItemClick(object sender, ItemClickEventArgs e)
{
var item = e.ClickedItem as userData;
if(item.answered) return;
//continue process
}
禁用已应答项目的视觉效果 您可以使用ItemContainerStyleSelector
public class COntainerSelector : StyleSelector
{
public Style Answered { get; set; }
public Style Default { get; set; }
protected override Style SelectStyleCore(object item, DependencyObject container)
{
var data = item as userData;
//If data is null or it un answered we use default container (have tilt effect)
if (data==null || !data.answered) return Default;
return Answered;
return base.SelectStyleCore(item, container);
}
}
未回答项目的项目容器（具有倾斜效果）
<Style x:Key="ContainerWithTiltEffect" TargetType="GridViewItem">
<Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}"/>
<Setter Property="FontSize" Value="{ThemeResource ControlContentThemeFontSize}"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="TabNavigation" Value="Local"/>
<Setter Property="IsHoldingEnabled" Value="False"/>
<Setter Property="Margin" Value="{ThemeResource GridViewItemMargin}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="GridViewItem">
<Border x:Name="OuterContainer" RenderTransformOrigin="0.5,0.5">
<Border.RenderTransform>
<ScaleTransform x:Name="ContentScaleTransform"/>
</Border.RenderTransform>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualStateGroup.Transitions>
<VisualTransition From="Pressed" To="Normal">
<Storyboard>
<PointerUpThemeAnimation Storyboard.TargetName="TiltContainer"/>
</Storyboard>
</VisualTransition>
</VisualStateGroup.Transitions>
<VisualState x:Name="Normal"/>
<VisualState x:Name="Pressed">
<Storyboard>
<PointerDownThemeAnimation Storyboard.TargetName="TiltContainer"/>
</Storyboard>
</VisualState>
<VisualState x:Name="CheckboxPressed">
<Storyboard>
<PointerDownThemeAnimation Storyboard.TargetName="CheckboxTiltContainer"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Fill" Storyboard.TargetName="NormalRectangle">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CheckBoxPressedBackgroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Fill" Storyboard.TargetName="CheckGlyph">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CheckBoxPressedForegroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="0" To="{ThemeResource ListViewItemDisabledThemeOpacity}" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="contentPresenter"/>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Stroke" Storyboard.TargetName="NormalRectangle">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CheckBoxDisabledBorderThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Fill" Storyboard.TargetName="CheckGlyph">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CheckBoxDisabledForegroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="BorderBrush" Storyboard.TargetName="SelectedBorder">
<DiscreteObjectKeyFrame KeyTime="0" Value="Transparent"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Fill" Storyboard.TargetName="SelectedEarmark">
<DiscreteObjectKeyFrame KeyTime="0" Value="Transparent"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Fill" Storyboard.TargetName="SelectedGlyph">
<DiscreteObjectKeyFrame KeyTime="0" Value="Transparent"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected"/>
<VisualState x:Name="Selected">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="CheckGlyph"/>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="SelectedCheckMark"/>
</Storyboard>
</VisualState>
<VisualState x:Name="SelectedUnfocused">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="CheckGlyph"/>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="SelectedCheckMark"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="DataVirtualizationStates">
<VisualState x:Name="DataAvailable"/>
<VisualState x:Name="DataPlaceholder">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="PlaceholderTextBlock">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="PlaceholderRect">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="MultiSelectStates">
<VisualStateGroup.Transitions>
<VisualTransition From="ListMultiSelect" GeneratedDuration="0:0:0.15" To="NoMultiSelect"/>
<VisualTransition From="NoMultiSelect" GeneratedDuration="0:0:0.15" To="ListMultiSelect"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="NoMultiSelect"/>
<VisualState x:Name="ListMultiSelect">
<Storyboard>
<DoubleAnimation Duration="0" To="0" Storyboard.TargetProperty="X" Storyboard.TargetName="CheckboxContainerTranslateTransform"/>
<DoubleAnimation Duration="0" To="{ThemeResource ListViewItemContentTranslateX}" Storyboard.TargetProperty="X" Storyboard.TargetName="ContentBorderTranslateTransform"/>
</Storyboard>
</VisualState>
<VisualState x:Name="GridMultiSelect">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="SelectedBorder"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="ReorderModeStates">
<VisualStateGroup.Transitions>
<VisualTransition From="ReorderEnabled" GeneratedDuration="00:00:00.2" To="ReorderDisabled"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="ReorderEnabled">
<Storyboard>
<DropTargetItemThemeAnimation Storyboard.TargetName="OuterContainer"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Reorderable">
<Storyboard>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="ScaleX" Storyboard.TargetName="ContentScaleTransform">
<LinearDoubleKeyFrame KeyTime="00:00:00.075" Value="1.05"/>
<LinearDoubleKeyFrame KeyTime="00:00:00.2" Value="1.0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="ScaleY" Storyboard.TargetName="ContentScaleTransform">
<LinearDoubleKeyFrame KeyTime="00:00:00.075" Value="1.05"/>
<LinearDoubleKeyFrame KeyTime="00:00:00.2" Value="1.0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="ReorderDisabled"/>
</VisualStateGroup>
<VisualStateGroup x:Name="ReorderHintStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:0.2" To="NoReorderHint"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="NoReorderHint"/>
<VisualState x:Name="BottomReorderHint">
<Storyboard>
<DragOverThemeAnimation Direction="Bottom" ToOffset="{ThemeResource ListViewItemReorderHintThemeOffset}" Storyboard.TargetName="ReorderHintContent"/>
</Storyboard>
</VisualState>
<VisualState x:Name="RightReorderHint">
<Storyboard>
<DragOverThemeAnimation Direction="Right" ToOffset="{ThemeResource ListViewItemReorderHintThemeOffset}" Storyboard.TargetName="ReorderHintContent"/>
</Storyboard>
</VisualState>
<VisualState x:Name="TopReorderHint">
<Storyboard>
<DragOverThemeAnimation Direction="Top" ToOffset="0" Storyboard.TargetName="ReorderHintContent"/>
</Storyboard>
</VisualState>
<VisualState x:Name="LeftReorderHint">
<Storyboard>
<DragOverThemeAnimation Direction="Left" ToOffset="0" Storyboard.TargetName="ReorderHintContent"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid x:Name="ReorderHintContent" Background="Transparent">
<Border x:Name="CheckboxTiltContainer" HorizontalAlignment="Left" Margin="{ThemeResource ListViewItemMultiselectCheckBoxMargin}" VerticalAlignment="Top">
<Border x:Name="CheckboxOuterContainer">
<Border.Clip>
<RectangleGeometry Rect="0,0,25.5,25.5"/>
</Border.Clip>
<Grid x:Name="CheckboxContainer">
<Grid.RenderTransform>
<TranslateTransform x:Name="CheckboxContainerTranslateTransform" X="{ThemeResource ListViewItemContentOffsetX}"/>
</Grid.RenderTransform>
<Rectangle x:Name="NormalRectangle" Fill="{ThemeResource CheckBoxBackgroundThemeBrush}" Height="25.5" Stroke="{ThemeResource CheckBoxBorderThemeBrush}" StrokeThickness="{ThemeResource CheckBoxBorderThemeThickness}" Width="25.5"/>
<Path x:Name="CheckGlyph" Data="M0,123 L39,93 L124,164 L256,18 L295,49 L124,240 z" Fill="{ThemeResource CheckBoxForegroundThemeBrush}" FlowDirection="LeftToRight" HorizontalAlignment="Center" Height="17" IsHitTestVisible="False" Opacity="0" Stretch="Fill" StrokeThickness="2.5" StrokeLineJoin="Round" VerticalAlignment="Center" Width="18.5"/>
</Grid>
</Border>
</Border>
<Border x:Name="ContentContainer">
<Border x:Name="TiltContainer">
<Border x:Name="ContentBorder" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
<Border.RenderTransform>
<TranslateTransform x:Name="ContentBorderTranslateTransform"/>
</Border.RenderTransform>
<Grid>
<ContentPresenter x:Name="contentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" ContentTransitions="{TemplateBinding ContentTransitions}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
<TextBlock x:Name="PlaceholderTextBlock" AutomationProperties.AccessibilityView="Raw" Foreground="{x:Null}" IsHitTestVisible="False" Margin="{TemplateBinding Padding}" Opacity="0" Text="Xg"/>
<Rectangle x:Name="PlaceholderRect" Fill="{ThemeResource GridViewItemPlaceholderBackgroundThemeBrush}" IsHitTestVisible="False" Visibility="Collapsed"/>
</Grid>
</Border>
</Border>
</Border>
<Border x:Name="SelectedBorder" BorderBrush="{ThemeResource ListViewItemSelectedBackgroundThemeBrush}" BorderThickness="{ThemeResource GridViewItemMultiselectBorderThickness}" IsHitTestVisible="False" Opacity="0">
<Grid x:Name="SelectedCheckMark" HorizontalAlignment="Right" Height="34" Opacity="0" VerticalAlignment="Top" Width="34">
<Path x:Name="SelectedEarmark" Data="M0,0 L40,0 L40,40 z" Fill="{ThemeResource ListViewItemSelectedBackgroundThemeBrush}" Stretch="Fill"/>
<Path x:Name="SelectedGlyph" Data="M0,123 L39,93 L124,164 L256,18 L295,49 L124,240 z" Fill="{ThemeResource ListViewItemCheckThemeBrush}" FlowDirection="LeftToRight" HorizontalAlignment="Right" Height="14.5" Margin="0,1,1,0" Stretch="Fill" VerticalAlignment="Top" Width="17"/>
</Grid>
</Border>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
对于已回答的项目（无倾斜效果）：复制上面的代码，然后查找并删除这些行，并且不要忘记将更改键更改为＆＃34; ContainerWithoutTiltEffect＆＃34;：
<VisualStateGroup.Transitions>
<VisualTransition From="Pressed" To="Normal">
<Storyboard>
<PointerUpThemeAnimation Storyboard.TargetName="TiltContainer"/>
</Storyboard>
</VisualTransition>
</VisualStateGroup.Transitions>
<VisualState x:Name="Normal"/>
<VisualState x:Name="Pressed">
<Storyboard>
<PointerDownThemeAnimation Storyboard.TargetName="TiltContainer"/>
</Storyboard>
</VisualState>
现在声明ItemContainerSelector：
<local:ContainerSelector x:Key="COntainerSelector" Default="{StaticResource ContainerWithTiltEffect}" Answered="{StaticResource ContainerWithoutTiltEffect}"/>
在GridView中使用ItemContainerSelector
<GridView x:Name="ViewPlayers" IsItemClickEnabled="True" ItemTemplate="StaticResource ImageGalleryDataTemplate}" SelectionMode="None" ItemClick="PlayerClick"
ItemContainerStyleSelector="{StaticResource COntainerSelector}"/>