WPF将Datagrid嵌套在datagrid详细信息中{binding} [英] WPF nested Datagrid in datagrid details {binding}

问题描述

我正在尝试将组合框绑定到我的VM中的列表，
该组合框位于一个数据网格中，此数据网格已绑定到另一个数据网格.

我应该如何设置绑定?

现在设置的所有绑定都可以正常工作，例如组合框上的绑定.

我似乎找不到在主窗口中设置的数据上下文...

到目前为止，这就是我所拥有的(当然没有用.)

我现在在xaml中拥有的内容:

I''m trying to bind a combobox to a list in my VM,
the combobox is located in a datagrid, this datagrid is binded to another datagrid.

How should I set up binding?

All binding that is set up now works just fine, exept for the binding on the combobox.

I can''t seem to find my datacontext that is set in the mainwindow...

This is what i have so far (It does''nt work ofcourse..)

What i have now, in xaml:

<DataGrid.RowDetailsTemplate>
    <DataTemplate>
        <Grid>
            <DataGrid AutoGenerateColumns="False" ItemsSource="{Binding ListBarcode}">
                <DataGrid.Columns >
                    <DataGridTextColumn   Binding="{Binding Path=Name,Mode=TwoWay,
                        ValidatesOnDataErrors=True,UpdateSourceTrigger=PropertyChanged,
                        ValidatesOnExceptions=True}" Header="BarcodeName" Width="Auto" />
                    <DataGridTextColumn Binding="{Binding Path=Number,Mode=TwoWay,
                        ValidatesOnDataErrors=True,UpdateSourceTrigger=PropertyChanged,
                        ValidatesOnExceptions=True}" Header="BarcodeNumber" Width="Auto" />
                    <DataGridComboBoxColumn Header="Brand" Width="1*" MaxWidth="100"

                                            ItemsSource="{Binding Path=DataContext.ListBrands,
                        RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window},
                        AncestorLevel=1}}" />
                </DataGrid.Columns>
            </DataGrid>
        </Grid>
    </DataTemplate>
</DataGrid.RowDetailsTemplate>

提前谢谢！

答案: WPF将Datagrid嵌套在datagrid详细信息中{binding} [ ^ ]

Thanks in advance!

Answer: WPF nested Datagrid in datagrid details {binding}[^]

推荐答案

Seth007写道:

Seth007 wrote:

< DataGridComboBoxColumn标头="Merk" Width ="1 *" MaxWidth ="100" ItemsSource ="{Binding RelativeSource = {RelativeSource FindAncestor，AncestorType = Window，AncestorLevel = 1}，Path = DataContext. >}"/>

<DataGridComboBoxColumn Header="Merk" Width="1*" MaxWidth="100" ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=Window, AncestorLevel=1}, Path=DataContext.Merkenlijst}" />

我在您的XAML中看到一个拼写错误. Merkenlijst是正确的还是应该是Merkenlist?

I see a typo mistake in the your XAML. Merkenlijst is this correct or is it suppose to Merkenlist?

因为DataGridComboBoxColumn不继承自FrameworkElement，所以它不在可视化树中呈现，因此您不能使用相对绑定.


数据网格中的列没有数据上下文，因为它们从未添加到可视化树中.绘制网格后，单元格便具有数据上下文，您可以使用常规绑定(不是静态资源...)在其中设置组合框项目源.

XML

Because DataGridComboBoxColumn doesn''t inherit from FrameworkElement it is not rendered in the visual tree, so you can''t use relative binding.


The columns in the datagrid dont have a datacontext, as they are never added to the visual tree. Once the grid is drawn the cells have a data context and you can set the combo boxes items source in them using normal bindings (not static resources...)

XML

<DataGridComboBoxColumn Header="Brand" Width="1*" MaxWidth="100" TextBinding="{Binding Path=Merk}">
                                  <DataGridComboBoxColumn.ElementStyle>
                                      <Style TargetType="ComboBox">
                                          <Setter Property="SelectedItem" Value="{Binding Path=Merk}"/>
                                      </Style>
                                  </DataGridComboBoxColumn.ElementStyle>
                                  <DataGridComboBoxColumn.EditingElementStyle>
                                      <Style TargetType="ComboBox">
                                          <Setter Property="ItemsSource" Value="{Binding Path=Merklijst}" />
                                          <Setter Property="SelectedItem" Value="{Binding Path=Merk}"/>
                                      </Style>
                                  </DataGridComboBoxColumn.EditingElementStyle>

一些带有一些代码和说明的链接:
http://wpf.codeplex.com/Thread/View.aspx?ThreadId=46627 [ ^ ]
http://stackoverflow.com/questions/1633800/wpf-datagrid-datagridcomboxbox-itemssource-binding-to-a-collection-of-collection [ http://stackoverflow.com/questions/1903057/wpf-datagridcomboboxcolumn [ http://blogs.msdn.com/vinsibal/archive/2008/08/14/wpf-datagrid-dissecting-the-visual-layout.aspx [

Some links with some code and explenations:
http://wpf.codeplex.com/Thread/View.aspx?ThreadId=46627[^]
http://stackoverflow.com/questions/1633800/wpf-datagrid-datagridcomboxbox-itemssource-binding-to-a-collection-of-collection[^]
http://stackoverflow.com/questions/1903057/wpf-datagridcomboboxcolumn[^]
http://blogs.msdn.com/vinsibal/archive/2008/08/14/wpf-datagrid-dissecting-the-visual-layout.aspx[^]

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