Multiple selection with checkbox using Datagrid in WPF

问题

I would like to know how to select multiple rows with DataGridCheckBoxColumn .

Here I'm able to select only one row, but how to do multiple selection.

My XAML is as follows:

<UserControl.Resources>
    <Style x:Key="itemstyle" TargetType="{x:Type DataGridRow}">
        <Style.Resources>
            <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="LightGoldenrodYellow" />
            <SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" Color="Transparent" />
            <SolidColorBrush x:Key="{x:Static SystemColors.HighlightTextBrushKey}" Color="Black" />
            <SolidColorBrush x:Key="{x:Static SystemColors.ControlTextBrushKey}" Color="Black" />
        </Style.Resources>
        <Setter Property="HorizontalContentAlignment" Value="Stretch" />
        <Setter Property="IsSelected" Value="{Binding Path=IsSelected, Mode=TwoWay}" />
        <Style.Triggers>
            <MultiTrigger>
                <MultiTrigger.Conditions>
                    <Condition Property="ItemsControl.AlternationIndex" Value="1" />
                    <Condition Property="IsSelected" Value="False" />
                    <Condition Property="IsMouseOver" Value="False" />
                </MultiTrigger.Conditions>
                <Setter Property="Background" Value="#EEEEEEEE" />
            </MultiTrigger>
        </Style.Triggers>
    </Style>
</UserControl.Resources>

<Grid Width="500" Height ="300">
    <DataGrid ItemsSource="{Binding Path=Script}" HeadersVisibility="Column" SelectionMode="Single" AlternatingRowBackground="Gainsboro" Background="White" AutoGenerateColumns="False" ItemContainerStyle="{StaticResource itemstyle}" CanUserAddRows="True" GridLinesVisibility="None" Height="242" HorizontalAlignment="Left" HorizontalContentAlignment="Left"  IsEnabled="True" IsReadOnly="True"   Margin="10,14,0,44" Name="dgMain" RowHeight="23" VerticalAlignment="Center" VerticalContentAlignment="Center"  Width="478" >
        <i:Interaction.Triggers>
            <i:EventTrigger EventName="MouseDoubleClick">
                <i:InvokeCommandAction Command="{Binding EditData}"/>
            </i:EventTrigger>
        </i:Interaction.Triggers>
        <DataGrid.Columns>
            <DataGridCheckBoxColumn Binding="{Binding Path=IsSelected}" Header="Select" Width="50" />
            <DataGridTextColumn Binding="{Binding Path=Script_Text}" Header="Script" Width="400" />
        </DataGrid.Columns>
    </DataGrid>
</Grid>

thanks

回答1:

SelectionMode="Extended" or SelectionMode="Multiple" will make your DataGrid multiselect

回答2:

You can do it, credit goes to Scott

https://blog.scottlogic.com/2008/11/26/multiselect-datagrid-with-checkboxes.html

And the trick is to use RowHeaderTemplate like below

<DataGrid ItemsSource="{Binding}">
    <DataGrid.RowHeaderTemplate>
      <DataTemplate>
         <Grid>
             <CheckBox IsChecked="{Binding Path=IsSelected, Mode=TwoWay,
                     RelativeSource={RelativeSource FindAncestor,
                      AncestorType={x:Type dg:DataGridRow}}}"/>
          </Grid>
</DataTemplate>

来源：https://stackoverflow.com/questions/19533356/multiple-selection-with-checkbox-using-datagrid-in-wpf

标签

wpf

mvvm

checkbox

datagrid