[英]How do I add a custom item to a ListView with a Collection binding
我有一个带有项绑定的ListView,看起来像这样:
<ListView x:Name="DetailsAZList" ItemsSource="{Binding AZEntries.AZEntries, Mode=OneWay}" >
<ListView.ItemTemplate>
<DataTemplate>
<Border Background="LightGray" BorderBrush="DimGray" BorderThickness="2" CornerRadius="0" Margin="0 2 0 10">
<Grid MinHeight="140" HorizontalAlignment="Stretch">
<StackPanel Margin="10 0" Orientation="Vertical">
<TextBlock Text="{Binding ToDoBezeichnung, Mode=OneWay}"/>
<!--UserName Unter umständen auch anzeigen, falls Arbeitszeiten anderer User mit aufgeführt werden-->
<!--<TextBlock Text="{Binding UserName, Mode=OneWay}"/>-->
<TextBlock Text="{Binding start, Mode=OneWay}"/>
<TextBlock Text="{Binding finished, Mode=OneWay}"/>
<TextBlock Text="{Binding Kostenpflichtig, Mode=OneWay}"/>
<controls:WrapPanel Orientation="Horizontal" BlockSize="40">
<!-- Example from: stackoverflow.com/questions/28223693/how-to-bind-buttons-in-listview-datatemplate-to-commands-in-viewmodel-mvvmligh -->
<Button Command="{Binding ElementName=DetailsAZList, Path=DataContext.PlayCommand}"
CommandParameter="{Binding}"
Margin="0 0 10 0">
<SymbolIcon Symbol="Play"/>
</Button>
<Button Command="{Binding ElementName=DetailsAZList, Path=DataContext.PauseCommand}"
CommandParameter="{Binding}"
Margin="0 0 10 0">
<SymbolIcon Symbol="Pause"/>
</Button>
<Button Command="{Binding ElementName=DetailsAZList, Path=DataContext.StopCommand}"
CommandParameter="{Binding}"
Margin="0 0 10 0">
<SymbolIcon Symbol="Stop"/>
</Button>
<Button Command="{Binding ElementName=DetailsAZList, Path=DataContext.EditCommand}"
CommandParameter="{Binding}"
Margin="0 0 10 0">
<SymbolIcon Symbol="Edit"/>
</Button>
<Button Command="{Binding ElementName=DetailsAZList, Path=DataContext.DeleteCommand}"
CommandParameter="{Binding}" >
<SymbolIcon Symbol="Delete"/>
</Button>
</controls:WrapPanel>
</StackPanel>
</Grid>
</Border>
</DataTemplate>
</ListView.ItemTemplate>
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="Margin" Value="0 2 0 0"/>
</Style>
</ListView.ItemContainerStyle>
</ListView>
我想做的是添加一个最高的项目,该项目未绑定,也未使用Datatemplate。 像这样:
<ListView x:Name="DetailsAZList" ItemsSource="{Binding AZEntries.AZEntries, Mode=OneWay}" >
<!-- Here comes the relevant Item -->
<ListViewItem x:Name="TopmostUnboundItem">
<Grid HorizontalAlignment="Strech" Background="LightGray">
<TextBox Text="Add Entry"/>
</Grid>
</ListViewItem>
<!-- Thats it -->
<ListView.ItemTemplate>
<DataTemplate>
<Border Background="LightGray" BorderBrush="DimGray" BorderThickness="2" CornerRadius="0" Margin="0 2 0 10">
<Grid>...</Grid>
</Border>
</DataTemplate>
</ListView.ItemTemplate>
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="Margin" Value="0 2 0 0"/>
</Style>
</ListView.ItemContainerStyle>
</ListView>
是否可以某种方式实现,而不必将我指定的Collection更改为ObservableCollection来添加Item,然后使用TemplateSelector? 我希望避免这种情况,因为我觉得对于单个项目来说这有点过大。
使用Header
并将您的内容放入ListView.HeaderTemplate
。 由于您只想在上面放1个项目,因此无需更改您的收藏集。
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