当我们尝试将一个RelativeSource从xaml转到code behind时,原本好好的binding表达式居然出现binding错误。...UserControl x:Class="WpfApp1.UserControl1"> </...但是此时发现RelativeSource (FindAncestor) requires tree context,我们在查找RelativeSource 时,需要有上下文树,而此时条件不满足,我们的绑定就被延迟了
={x:Static RelativeSource.TemplatedParent}}" Stretch="{Binding Stretch,RelativeSource={x:Static RelativeSource.TemplatedParent...={x:Static RelativeSource.TemplatedParent}}" Stretch="{Binding Stretch,RelativeSource={x:Static RelativeSource.TemplatedParent...={x:Static RelativeSource.TemplatedParent}}" Stretch="{Binding Stretch,RelativeSource={x:Static RelativeSource.TemplatedParent...第一种,绑定数据事件DataTrigger的条件时,使用RelativeSource.Self,如{Binding IsMouseOver,RelativeSource={x:Static RelativeSource.Self...第二种,条件成立,触发模板变化时,使用RelativeSource.TemplatedParent,如{Binding BackImage, RelativeSource={x:Static RelativeSource.TemplatedParent
Self模式 或 RelativeSource使用Self模式时, 目标对象将作为源对象绑定到自身。...TemplatedParent模式 或 RelativeSource使用TemplatedParent... 在控件模板(ControlTemplate)中使用RelativeSource的TemplatedParent模式,”Binding RelativeSource={RelativeSource
在列表新建一个图标,添加 Visibility Visibility="{Binding RelativeSource={RelativeSource AncestorType=ListBoxItem}... <TextBlock Text="{Binding <em>RelativeSource</em>...={<em>RelativeSource</em> AncestorType=ListBoxItem}, Path=(ItemsControl.AlternationIndex),Mode=OneWay,Converter...={<em>RelativeSource</em> AncestorType=ListBoxItem}, Path=(ItemsControl.AlternationIndex),Mode=OneWay,Converter...={<em>RelativeSource</em> AncestorType=ListBoxItem}, Path=(ItemsControl.AlternationIndex),Mode=OneWay,Converter
={RelativeSource Self},Path=Height}"/> 绑定祖先元素属性 如果想让图片上下填充满,左右等比自适应,可以使用下面的方式实现: <Image Height="{Binding ActualHeight, <em>RelativeSource</em>...其中 <em>RelativeSource</em>={<em>RelativeSource</em> AncestorType={x:Type Grid}} 是用来指定查找最近类型为Grid的祖先元素。...={<em>RelativeSource</em> TemplatedParent}, Path=Background}" /> <
在列表新建一个图标,添加 Visibility Visibility="{Binding RelativeSource={RelativeSource AncestorType=ListBoxItem}... <TextBlock Text="{Binding <em>RelativeSource</em>...={<em>RelativeSource</em> AncestorType=ListBoxItem}, Path=(ItemsControl.AlternationIndex),Mode=OneWay,Converter...获取当前列表项,使用{Binding <em>RelativeSource</em>={<em>RelativeSource</em> AncestorType=ListBoxItem}, Path=(ItemsControl.AlternationIndex...={<em>RelativeSource</em> AncestorType=ListBoxItem}, Path=(ItemsControl.AlternationIndex),Mode=OneWay,Converter
toolkit\" "); cellTemp.Append(" >"); cellTemp.Append(""); cellTemp.Append(" ");...={x:Static RelativeSource.Self}}\">"); cellTemp.Append(" ");
I modified the ContentPresenter in the following way in order to test out using the "FindAncestor" RelativeSource...={RelativeSource Mode=FindAncestor,AncestorType={x:Type ListBoxItem}}, Path=IsSelected}" Value="True"...={RelativeSource Mode=FindAncestor,AncestorType={x:Type ListBoxItem}}, Path=IsSelected}" Value="False...={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBoxItem}}, Path=IsSelected}">...={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBoxItem}}, Path=IsSelected}" Value="True
={RelativeSource TemplatedParent}}" ColumnHeaderContainerStyle...={RelativeSource TemplatedParent}}" ColumnHeaderTemplate="{...Binding Path=TemplatedParent.View.ColumnHeaderTemplate, RelativeSource...Path=TemplatedParent.View.AllowsColumnReorder, RelativeSource={RelativeSource...Path=TemplatedParent.View.ColumnHeaderToolTip, RelativeSource={RelativeSource
解决方法很简单,使用RelativeSource找到数据。...只需要修改 <MultiBinding.Converter
> <drawing:PanningItems ItemsSource="{Binding stringCollection,<em>RelativeSource</em>...={<em>RelativeSource</em> AncestorType=local:MainWindow}}" x:Name="MyPanningItems...={<em>RelativeSource</em> AncestorType=local:MainWindow}}"/> <TextBlock Grid.Row...="1" FontSize="45" HorizontalAlignment="Center" Text="{Binding Date,<em>RelativeSource</em>={<em>RelativeSource</em> AncestorType
={RelativeSource FindAncestor, AncestorType={x:Type ListViewItem}}}"/> </DataTemplate...={RelativeSource TemplatedParent}}" VerticalAlignment="{TemplateBinding VerticalContentAlignment...={RelativeSource Mode=FindAncestor,AncestorType=ListBox},Path=SelectionMode}" Value="Single...={RelativeSource Mode=FindAncestor,AncestorType=ListBox},Path=IsMultiSelectCheckBoxEnabled}"...={RelativeSource AncestorType={x:Type DataGridRow}, Mode=FindAncestor}}" x:Name
={RelativeSource TemplatedParent}, Path=TemplateSettings.MaxSideLength}" MaxHeight="{Binding RelativeSource...={RelativeSource TemplatedParent}, Path=TemplateSettings.MaxSideLength}" Visibility="Collapsed"...={RelativeSource TemplatedParent}, Path=TemplateSettings.EllipseDiameter}" Height="{Binding RelativeSource...={RelativeSource TemplatedParent}, Path=TemplateSettings.EllipseDiameter}" Margin="{Binding RelativeSource...={RelativeSource TemplatedParent}, Path=TemplateSettings.EllipseOffset}" Fill="{TemplateBinding
={RelativeSource TemplatedParent}}"> <StackPanel Grid.Column="1" Orientation
DataContext绑定 RelativeSource绑定 集合当前项绑定 1、DataContext绑定 DataContext是一个依赖属性,它是绑定的默认源。...输出 2、RelativeSource 绑定 RelativeSource是一个属性,它用相对关系设置绑定源以绑定目标。此扩展主要用于必须将元素的一个属性绑定到同一元素的另一个属性时。...RelativeSource有四种类型,如下所示。 Self FindAncestor TemplatedParent PreviousData 让我们一个一个详细地探讨一下。... <Ellipse Fill="Black" Height="100" Width="{Binding <em>RelativeSource</em>={<em>RelativeSource</em> Self},...Margin="35" Content="{Binding <em>RelativeSource</em>={<em>RelativeSource</em> TemplatedParent},Path=Content
Margin="5" Command="{Binding DataContext.ClickAcceptCommand, RelativeSource...={RelativeSource AncestorType=ListBox}}" CommandParameter="{Binding}"...={RelativeSource AncestorType=ListBox}}" CommandParameter="{Binding}"...Margin="5" Command="{Binding DataContext.ClickAgreeCommand, RelativeSource...={RelativeSource AncestorType=ListBox}}" CommandParameter="{Binding}"
大神问,如何在 ListView 绑定前一项,于是我下面告诉大家如何在 ListView 绑定前一项 WPF 绑定前一项 可以使用绑定的 RelativeSource 就可以绑定前一项,请看代码... 然后把代码写到 FooPropertyChangedCallback 就可以了
={RelativeSource AncestorType={x:Type DataGridRow}}}" Visibility=..."{Binding (Validation.HasError), Converter={StaticResource bool2VisibilityConverter}, RelativeSource=...={RelativeSource AncestorType={x:Type DataGrid}}}" /> <Grid Grid.Row
<TextBox Text="{Binding Second,Mode=TwoWay,<em>RelativeSource</em>={<em>RelativeSource</em>...={<em>RelativeSource</em> TemplatedParent}】来寻找绑定源,注意,这里一定要用TemplatedParent,不然无法绑定到我们控件类。
领取专属 10元无门槛券
手把手带您无忧上云