[英]WPF Datagrid - Can I programmatically select all rows in a Group?
Regards, 问候,
I have a DataGrid with a checkbox column to allow the user to select rows, a "select all" checkbox in the column header, and a "select all" checkbox in the group header. 我有一个带复选框列的DataGrid,允许用户选择行,列标题中有一个“全选”复选框,组标题中有一个“全选”复选框。
XAML: XAML:
<DataGrid x:Name="TablaDatos"
AutoGenerateColumns="False"
CanUserAddRows="False"
CanUserReorderColumns="True"
CanUserResizeColumns="True"
CanUserResizeRows="True"
CanUserSortColumns="True"
SelectionMode="Extended"
Grid.Row="2">
<DataGrid.GroupStyle>
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Margin" Value="0,0,0,5"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GroupItem}">
<Expander IsExpanded="True">
<Expander.Background>
<LinearGradientBrush>
<GradientStop Color="#A0FAFAFF" Offset="0.3" />
<GradientStop Color="#FFAACAFF" Offset="1" />
</LinearGradientBrush>
</Expander.Background>
<Expander.Header>
<DockPanel>
<CheckBox x:Name="ProyectoCHK" Margin="0 5 0 0" Click="ProyectoCHK_Click"></CheckBox>
<Label FontWeight="Bold" Content="{Binding Path=Name}" Width="200" Target="{Binding ElementName=ProyectoCHK}"/>
<TextBlock FontWeight="Bold" Text="{Binding Path=ItemCount}" Margin="0 5 0 0"/>
</DockPanel>
</Expander.Header>
<Expander.Content>
<ItemsPresenter />
</Expander.Content>
</Expander>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
</DataGrid.GroupStyle>
<DataGrid.Columns>
<DataGridTemplateColumn>
<DataGridTemplateColumn.HeaderTemplate>
<DataTemplate>
<CheckBox/>
</DataTemplate>
</DataGridTemplateColumn.HeaderTemplate>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<CheckBox IsChecked="{Binding Path=Checked, UpdateSourceTrigger=PropertyChanged}" Name="theCheckbox"/>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTextColumn IsReadOnly="True" Header="Id. Prueba" Binding="{Binding id_prueba}" SortDirection="Descending"></DataGridTextColumn>
<DataGridTextColumn IsReadOnly="True" Header="VSAT" Binding="{Binding VSAT}"></DataGridTextColumn>
<DataGridTextColumn IsReadOnly="True" Header="PC" Binding="{Binding PC}"></DataGridTextColumn>
<DataGridTextColumn IsReadOnly="True" Header="Fecha Evento" Binding="{Binding FechaUltimoEvento, StringFormat={}\{0:dd/MM/yyyy HH:mm:ss\}}"></DataGridTextColumn>
<DataGridTextColumn IsReadOnly="True" Header="Estado" Binding="{Binding Estado}"></DataGridTextColumn>
<DataGridTextColumn IsReadOnly="True" Header="Mensaje" Binding="{Binding Mensaje}"></DataGridTextColumn>
<DataGridTextColumn IsReadOnly="True" Header="Fecha de creación" Binding="{Binding FechaCreacionPrueba}"></DataGridTextColumn>
<DataGridTextColumn IsReadOnly="True" Header="Proyecto" Binding="{Binding PROYECTO}"></DataGridTextColumn>
<DataGridTextColumn IsReadOnly="True" Header="Departamento" Binding="{Binding DEPARTAMENTO}"></DataGridTextColumn>
<DataGridTextColumn IsReadOnly="True" Header="Municipio" Binding="{Binding MUNICIPIO}"></DataGridTextColumn>
<DataGridTextColumn IsReadOnly="True" Header="Localidad" Binding="{Binding LOCALIDAD}"></DataGridTextColumn>
<DataGridTextColumn IsReadOnly="True" Header="Id. punto" Binding="{Binding IDENTIFICADOR_PUNTO}"></DataGridTextColumn>
<DataGridTextColumn IsReadOnly="True" Header="Usuario" Binding="{Binding UsuarioPrueba}"></DataGridTextColumn>
</DataGrid.Columns>
</DataGrid>
¿How I Can Select all Checkboxes for the rows in a group? ¿如何选择组中所有行的所有复选框?
Thanks. 谢谢。
如果您使用的是MVVM模式,则可以将视图模型中的绑定CheckBox属性设置为“ True”,并且CheckBox控件将反映该值
In the CheckBox "ProyectoCHK"'s Checked event do this... (code below may need improvements) 在CheckBox“ ProyectoCHK”的Checked事件中执行此操作(以下代码可能需要改进)
The visual sibling of ProyectoCHK
is a Label which is bound to the Name property in GroupStyle
. ProyectoCHK
的视觉同级是Label,它绑定到GroupStyle
的Name属性。 Access that and copy its Content into a variable say "GroupValue". 访问该目录并将其Content复制到变量“ GroupValue”中。
Assuming that you have bound your DataGrid
to a CollectionView
, when grouping happens you have the GroupDescription
in it. 假设您已将
DataGrid
绑定到CollectionView
,则在进行分组时,您将拥有GroupDescription
。
So accessing that will give you the GroupedPropertyName
on which grouping has happened. 因此,访问它将为您提供发生分组的
GroupedPropertyName
。 Then you can use 那你可以用
var items = DataGrid.ItemsSource.AsQueryable.Where(GroupedPropertyName + " == " + "\"" + GroupValue + "\"");
AsQueryable()
is available in Linq namespace. Linq名称空间中提供了
AsQueryable()
。
items
returned by the query filter above, just make individual item.Checked = true
(Assuming that item class has implemented INotifyPropertyChanged
and has raised PropertyChanged
notification for Checked
property). items
仅构成单个item.Checked = true
(假设该项目类已实现INotifyPropertyChanged
并引发了Checked
属性的PropertyChanged
通知)。 Let me know if this works. 让我知道这个是否奏效。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.