如何从 wpf 中的另一个数据模板访问数据? [英] How to access data from another datatemplate in wpf?

问题描述

我有 2 个数据模板.一个包含一个网格，第二个包含一个按钮.我需要将按钮的命令参数作为选定的网格项发送.

I have 2 Datatemplates. One contain a grid , second one contain a button. I need to send command parameters of button as selected grid items.

我该怎么做?

<ObjectDataProvider x:Key="Datas" ObjectType="{x:Type ViewModel:UserControlViewModel}"></ObjectDataProvider>

<DataTemplate x:Key="SourceGrid">
<WPFToolKit:DataGrid x:Name="SourceDataGrid" ItemsSource="{Binding Source={StaticResource Datas},Path=SourceGridData}" CanUserSortColumns="True" GridLinesVisibility="None" IsSynchronizedWithCurrentItem="True" SelectionUnit="FullRow"></WPFToolKit:DataGrid>
</DataTemplate>

<DataTemplate x:Key="AddRemoveDataTemplate">
<StackPanel>
<Button Name="Add" Content="Add">
<Button.Command>
<Binding Source="{StaticResource Datas}" Path="AddCommand"> 
</Binding>
</Button.Command>
<Binding ElementName="SourceDataGrid" Path="SelectedItem"></Binding>
</Button.CommandParameter>
</Button>
<StackPanel>
</DataTemplate>

推荐答案

您可以尝试使用 Binding 并将 RelativeSource 属性设置为 FindAncestor 模式并寻找 DataGrid 对象.但是，我不确定它是否适用于您的场景，因为我不知道这些 DataTemplate 是如何相互关联的.第二个 DataTemplate 是否用于 DataGrid 中的项目?！

You could try to use a Binding with the RelativeSource property set to the FindAncestor mode and looking for a DataGrid object. However, I am not sure whether it will work in your scenario because I do not know how these DataTemplates are related to each other. Is the second DataTemplate used for the items in the DataGrid?!

不知何故，你的设计让我觉得很奇怪.您确定在这两种情况下都需要 DataTemplate 吗?你到底想达到什么目标?

Somehow, your design feels strange to me. Are you sure that you need DataTemplates in both cases? What exactly do you want to achieve?

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