我只有以下DataGrid
<DataGrid x:Name="resourceDataGrid"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
AutoGenerateColumns="false"
GridLinesVisibility="None"
RowHeaderWidth="0"
CanUserAddRows="True"
CanUserDeleteRows="True"
ItemsSource="{Binding Path=Resources,
Mode=TwoWay,
UpdateSourceTrigger=PropertyChanged,
IsAsync=True}">
<DataGrid.Columns>
<DataGridTextColumn Header="KeyIndex" Binding="{Binding KeyIndex}" IsReadOnly="True"/>
<DataGridTextColumn Header="FileName" Binding="{Binding FileName}" IsReadOnly="True"/>
<DataGridTextColumn Header="ResourceName" Binding="{Binding ResourceName}" IsReadOnly="False"/>
<controls:CollectionTextColumn Collection="ResourceStringList" Visibility="Collapsed"/>
</DataGrid.Columns>
</DataGrid>
当删除数据集中的某行时,我想重新编号KeyIndex
列。当重新编号发生时,我想优雅地刷新更新的单元格,让用户知道然后更新这些值。
我仍然是WPF和MVVM的新手,我不确定如何“倾听”这种价值变化。我的第一个想法是,我不需要新的DependencyProperty
来完成这项工作,并且我可以使用SourceUpdated
仅仅挂钩DataTrigger
属性,但目前尚不清楚如何做这个。我试图定义以下内容
<Style x:Key="readOnlyCellUpdatedStyle"
TargetType="{x:Type DataGridCell}"
BasedOn="{StaticResource {x:Type DataGridCell}}">
<Style.Triggers>
<DataTrigger Binding="ContentUpdated" Value="True">
<DataTrigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity"
To="1"
Duration="0:0:1" />
</Storyboard>
</BeginStoryboard>
</DataTrigger.EnterActions>
<DataTrigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity"
To="0.25"
Duration="0:0:1" />
</Storyboard>
</BeginStoryboard>
</DataTrigger.ExitActions>
</DataTrigger>
</Style.Triggers>
</Style>
但是,ViewModel中每个项目绑定到ContentUpdated
属性远非理想。 做我想做的事的正确方法是什么?
感谢您的时间。
答案 0 :(得分:2)
SourceUpdated
我过去是如何做到这一点的,但您需要确保在NotifyOnSourceUpdated
上将Binding
设置为true。类似的东西:
<DataGridTemplateColumn>
<DataGridTemplateColumn.Template>
<DataTemplate>
<TextBlock Text="{Binding KeyIndex, NotifyOnSourceUpdated=True, Mode=OneWay}">
<TextBlock.Style>
<Style TargetType="TextBlock">
<Style.Triggers>
<EventTrigger RoutedEvent="Binding.SourceUpdated">
...
</EventTrigger>
</Style.Triggers>
</Style>
</TextBlock.Style>
</TextBlock>
</DataTemplate>
</DataGridTemplateColumn.Template>
</DataGridTemplateColumn>