如果选择模式为单一,但是如果设置为多个,那么我能够绑定SelectedItem,那么如何绑定它?
以下是我为单选模式尝试的内容
<sync:SfDataGrid Grid.Row="1" AutoGenerateColumns="False" AllowSorting="True"
AllowGroupExpandCollapse="True" AutoExpandGroups="True"
SelectionMode="Multiple" ColumnSizer="Star"
ItemsSource="{Binding LstItems}"
SelectedItem="{Binding Path=SelectedItem, Mode=TwoWay}"
>
<sync:SfDataGrid.Columns>
<sync:GridTextColumn HeaderText="Name" MappingName="Name" />
<sync:GridTextColumn HeaderText="MRP" MappingName="MRP"/>
<sync:GridTextColumn HeaderText="Category" MappingName="Category" Width="0"/>
</sync:SfDataGrid.Columns>
<sync:SfDataGrid.GroupColumnDescriptions>
<sync:GroupColumnDescription ColumnName="Category"/>
</sync:SfDataGrid.GroupColumnDescriptions>
</sync:SfDataGrid>
在上面的xaml中,选择模式设置为多个但我无法在xaml中获取SelectedItems,如此处所述
答案 0 :(得分:2)
在SfDataGrid中,无法将SfDataGrid.SelectedItems属性绑定到视图模型,就像SelectedItem属性一样,因为我们只能在SfDataGrid中获取所选项。因此,您将无法在XAML中为SelectedItems属性绑定值。
但是,您可以通过编写SfDataGrid的行为来实现您的需求,这不会影响MVVM模式。请参阅以下代码段。
<sfGrid:SfDataGrid x:Name="dataGrid"
AutoGenerateColumns="True"
ItemsSource="{Binding OrdersInfo}"
SelectionMode="Multiple">
<b:Interaction.Behaviors>
<b:BehaviorCollection>
<b:EventToCommand Command="{Binding SelectionCommand}"
CommandParameter="{x:Reference Name=dataGrid}"
EventName="SelectionChanged" />
</b:BehaviorCollection>
</b:Interaction.Behaviors>
</sfGrid:SfDataGrid>
// In ViewModel.cs
public ViewModel()
{
selectionCommand = new Command<SfDataGrid>(onSelectionChanged);
selectedItems = new ObservableCollection<object>();
}
private Command<SfDataGrid> selectionCommand;
public Command<SfDataGrid> SelectionCommand
{
get { return selectionCommand; }
set { selectionCommand = value; }
}
private ObservableCollection<object> selectedItems;
public ObservableCollection<object> SelectedItems
{
get { return selectedItems; }
set { selectedItems = value; }
}
private void onSelectionChanged(SfDataGrid obj)
{
//you can get the selected items in the datagrid
selectedItems = obj.SelectedItems;
}
另外,我们准备了一个样本供您参考,您可以从以下链接下载。
示例链接:http://www.syncfusion.com/downloads/support/directtrac/168321/ze/DataGridDemo352928928
此致
Divakar。