标签：children pen aml panel alt ade htm box 模板
原文:ItemTemplateSelector
ItemTemplateSelector的中文翻译是模板选择器
是用来选择模板。
他的用法稍有不同，他必须派生于DataTemplateSelector类。
然后重写SelectTemplate这个方法,方法内由两个参数，一是对象所绑定的数据，二是你绑定的元素。方法有返回类型为DataTemplate的，不过默认值为Null
xaml则是通过绑定的方式。
模板选择的用比较广。
这里就介绍默认的使用方式。
通过数据或者对象元素来选择模板
选择器类
using System.Windows; using System.Windows.Controls; namespace WinMenu { public class Select: DataTemplateSelector { private int i = 0; public override DataTemplate SelectTemplate(object item, DependencyObject container) { var u = container as FrameworkElement; i++; if (i % 2 == 0) return u.FindResource("d1") as DataTemplate; else return u.FindResource("d2") as DataTemplate; } } }
xaml代码：
<Window.Resources>
<local:Select x:Key="sl2"/>
<DataTemplate x:Key="d1">
<Image x:Name="image" Height="150" Width="300" Source="{Binding Image}" />
</DataTemplate>
<DataTemplate x:Key="d2">
<Image x:Name="image" Height="100" Width="100" Source="{Binding Image}" />
</DataTemplate>
<Storyboard x:Key="S2">
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)" >
<EasingDoubleKeyFrame KeyTime="0" Value="30"/>
<EasingDoubleKeyFrame KeyTime="0" Value="30"/>
<EasingDoubleKeyFrame KeyTime="0:0:0.4" Value="-5"/>
<EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)" >
<EasingDoubleKeyFrame KeyTime="0" Value="0"/>
<EasingDoubleKeyFrame KeyTime="0" Value="0"/>
<EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="1"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)" >
<EasingDoubleKeyFrame KeyTime="0" Value="0"/>
<EasingDoubleKeyFrame KeyTime="0" Value="0"/>
<EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="1"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</Window.Resources>
<Grid>
<ListBox ItemTemplateSelector="{StaticResource sl2}" x:Name="ListBoxFile" Margin="0,0,0,119" >
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="RenderTransform" >
<Setter.Value>
<TransformGroup>
<ScaleTransform/>
<SkewTransform/>
<RotateTransform/>
<TranslateTransform/>
</TransformGroup>
</Setter.Value>
</Setter>
<Style.Triggers>
<EventTrigger RoutedEvent="FrameworkElement.Loaded">
<BeginStoryboard Storyboard="{StaticResource S2}"/>
</EventTrigger>
</Style.Triggers>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>
<Button Click="Button_Click" Margin="451,321,0,0"/>
</Grid>
图片
标签：children pen aml panel alt ade htm box 模板
原文地址：https://www.cnblogs.com/lonelyxmas/p/12833987.html
