用的RelativeSource绑定--wpf
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26-09-2019 - |
题
我有一个短的问题:
我有一个DataGrid,并将其绑定到的东西。然后,我把一个组合框在一列和绑定到另一个源通过
ItemsSource="{Binding DataContext.Users, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}"
现在我想再次使用DataGrid的来源,在下拉列表again.That代码现在不工作,我知道有一个在DataGrid的源ID列。
SelectedValue="{Binding ID}"
我怎样才能解决这个问题?由于事先。
这是我的整个DataGrid和有问题的部分是组合框。
<DataGrid ItemsSource="{Binding SCs}" SelectedItem="{Binding SelectedSC}" Margin="0,10,0,0"
RowStyle="{StaticResource ResourceKey=DataGridRowStyle}" Style="{DynamicResource ResourceKey=UILDataGridStyle}" AutoGenerateColumns="False" EnableRowVirtualization="True"
RowDetailsVisibilityMode="VisibleWhenSelected" Width="Auto" IsReadOnly="True" Background="Transparent"
VerticalAlignment="Stretch" HorizontalAlignment="Stretch" GridLinesVisibility="Vertical" VerticalGridLinesBrush="{DynamicResource ResourceKey=UILBorderBrush}"
RowHeaderWidth="0" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" BorderBrush="{DynamicResource ResourceKey=UILBorderBrush}"
BorderThickness="1" SelectionUnit="FullRow" SelectionMode="Single" x:Name="SCDataGrid">
<DataGrid.Columns>
<DataGridTextColumn x:Name="securityConfigurationIDColumn" Binding="{Binding Path=SecurityConfigurationID}" Header="Security Configuration ID" Width="*" />
<DataGridTextColumn x:Name="securityConfigurationNameColumn" Binding="{Binding Path=SecurityConfigurationName}" Header="Security Configuration Name" Width="*" />
<DataGridTemplateColumn x:Name="proxyResponsibleUser_IDColumn" Header="Proxy Responsible User ID" Width="*" >
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<ComboBox IsEnabled="True" ItemsSource="{Binding DataContext.Users, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}"
SelectedValuePath="{Binding UserID}" DisplayMemberPath="{Binding FullName}" Width="117" Height="20"
SelectedValue="{Binding ProxyResponsibleUser_ID, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ComboBox}}, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" />
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTextColumn x:Name="responsibleUser_IDColumn" Binding="{Binding Path=User.FullName}" Header="Responsible User ID" Width="*" />
<DataGridTextColumn x:Name="securityConfigurationDescriptionColumn" Binding="{Binding Path=SecurityConfigurationDescription}" Header="Security Configuration Description" Width="*" />
<DataGridTextColumn x:Name="securityConfigurationURLColumn" Binding="{Binding Path=SecurityConfigurationURL}" Header="Security Configuration URL" Width="*" />
</DataGrid.Columns>
</DataGrid>
解决方案
使用下面的组合框细胞模板。
此代码绑定整个网格的数据源组合框模板,它允许你使用任何属性,而不做寻找祖先..
的戏法<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Grid DataContext="{Binding }">
<ComboBox IsEnabled="True"
ItemsSource="{Binding Users}"
SelectedValuePath="{Binding UserID}"
DisplayMemberPath="{Binding FullName}"
Width="117" Height="20"
SelectedValue="{Binding ProxyResponsibleUser_ID,
UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}"/>
</Grid>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
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