ItemsControl按钮单击命令 [英] ItemsControl button click command
问题描述
我需要一些快速帮助,现在对我来说这是一个路障.我在ItemsControl
中有Button
,我需要在按钮单击上执行一些任务.我尝试将Command
添加到I temsControl
DataTemplate
中的Button
,但是它不起作用.谁能建议进一步进行下去.
I need some quick help which is a road blocker for me now. I have Button
in ItemsControl
and I need to perform some task on Button click. I tried adding Command
to Button
in ItemsControl
DataTemplate
but its not working. Can anyone suggest how to proceed further.
<UserControl.Resources>
<DataTemplate x:key="mytask">
<TextBox Grid.Row="5" Grid.Column="2" Text="{Binding Path=PriorNote}" Grid.ColumnSpan="7" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="0,5" Width="505" Foreground="Black"/>
<StatusBarItem Grid.Row="2" Grid.Column="8" Margin="8,7,7,8" Grid.RowSpan="2">
<Button x:Name="DetailsButton" Command="{Binding CommandDetailsButtonClick}">
</DataTemplate>
</UserControl.Resources>
<Grid>
<ItemsControl Grid.Row="1"
ItemsSource="{Binding ListStpRules}"
ItemTemplate="{StaticResource myTaskTemplate}" Background="Black"
AlternationCount="2" >
</ItemsControl>
</Grid>
在ViewModel中,我已经实现了Command的代码.而且它不起作用.请为我提出进一步解决方案的建议
and in ViewModel I have implemented code for Command. And its not working. Please suggest any solution for me to proceed further
推荐答案
ItemsControl
中每个项目的DataContext
是ItemsControl
绑定到的集合中的项目.如果该项目包含Command
,则您的代码应该可以正常工作.
The DataContext
of each item in your ItemsControl
is the item in the collection the ItemsControl
is bound to. If this item contains the Command
, your code should work fine.
但是,通常情况并非如此.通常,存在一个ViewModel,其中包含ItemsContro
l的项的ObservableCollection
和要执行的命令.如果是这种情况,则需要更改绑定的Source
,以便它在ItemsControl.DataContext
中而不是ItemsControl.Item[X]
However, this is not usually the case. Typically there is a ViewModel containing an ObservableCollection
of items for the ItemsContro
l, and the Command to execute. If this is your case, you'll need to change the Source
of your binding so it looks for the command in ItemsControl.DataContext
, not ItemsControl.Item[X]
<Button Command="{Binding
RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}},
Path=DataContext.MyCommand}" />
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