Question

扩展按钮在我的wpf数据网格中无法正常工作。我使用以下模板进行扩展器按钮。

            <!-- MouseOver, Pressed behaviours-->
            <Trigger Property="IsMouseOver"
                             Value="true">
                <Setter Property="Stroke"
                                Value="#FF3C7FB1"
                                TargetName="Circle"/>
                <Setter Property="Stroke"
                                Value="#222"
                                TargetName="Sign"/>
            </Trigger>
            <Trigger Property="IsPressed"
                             Value="true">
                <Setter Property="Stroke"
                                Value="#FF526C7B"
                                TargetName="Circle"/>
                <Setter Property="StrokeThickness"
                                Value="1.5"
                                TargetName="Circle"/>
                <Setter Property="Stroke"
                                Value="#FF003366"
                                TargetName="Sign"/>
            </Trigger>
        </ControlTemplate.Triggers>
    </ControlTemplate>
    <!-- Simple Expander Template-->
    <ControlTemplate x:Key="SimpleExpanderTemp" TargetType="{x:Type Expander}">
        <DockPanel>
            <ToggleButton x:Name="ExpanderButton" 
                          DockPanel.Dock="Top"
                          Template="{StaticResource SimpleExpanderButtonTemp}"
                          Content="{TemplateBinding Header}"
                          IsChecked="{Binding Path=IsExpanded, RelativeSource={RelativeSource TemplatedParent}}"
                          OverridesDefaultStyle="True"
                          Padding="1.5,0">
            </ToggleButton>
            <ContentPresenter x:Name="ExpanderContent"
                              Grid.Row="1" 
                              Visibility="Collapsed"
                              DockPanel.Dock="Bottom"/>
        </DockPanel>
        <ControlTemplate.Triggers>
            <Trigger Property="IsExpanded" Value="True">
                <Setter TargetName="ExpanderContent" Property="Visibility" Value="Visible"/>
            </Trigger>
        </ControlTemplate.Triggers>
    </ControlTemplate>

我还要为datagridtemplatecolumn添加以下代码。

<DataGridTemplateColumn Width="27">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <StackPanel Orientation="Horizontal">
                            <Expander Template="{StaticResource SimpleExpanderTemp}" Expanded="Expander_Expanded" Collapsed="Expander_Collapsed"/>
                        </StackPanel>
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>

但是如果我想在我的wpf数据网格中扩展一个扩展器按钮，其他一些扩展器按钮也在扩展（不是每次都有），而且有些扩展器按钮正在折叠。

此xaml代码中的错误是什么？

扩展器事件是，

private void Expander_Expanded(object sender, RoutedEventArgs e)
{
    ContentControl cc = sender as ContentControl;
    Expander exp = cc as Expander;

    var itemsSource = objDatagrid.ItemsSource as IEnumerable;
    if (itemsSource != null)
    {
        foreach (var item in itemsSource)
        {
            var row = objDatagrid.ItemContainerGenerator.ContainerFromItem(item) as DataGridRow;
            if (row != null)
            {
                row.IsSelected = false;
            }

        }
    }
    for (var vis = sender as Visual; vis != null; vis = VisualTreeHelper.GetParent(vis) as Visual)
        if (vis is DataGridRow)
        {

            var row = (DataGridRow)vis;
            row.IsSelected = true;
            if (exp.IsExpanded)
            {
                row.DetailsVisibility = Visibility.Visible;
                exp.ExpandDirection = ExpandDirection.Down;
            }
            break;
        }
}

private void Expander_Collapsed(object sender, RoutedEventArgs e)
{
    var itemsSource = objDatagrid.ItemsSource as IEnumerable;
    if (itemsSource != null)
    {
        foreach (var item in itemsSource)
        {
            var row = objDatagrid.ItemContainerGenerator.ContainerFromItem(item) as DataGridRow;
            if (row != null)
            {
                row.IsSelected = false;
            }

        }
    }
    for (var vis = sender as Visual; vis != null; vis = VisualTreeHelper.GetParent(vis) as Visual)

        if (vis is DataGridRow)
        {
            var row = (DataGridRow)vis;
            row.IsSelected = true;
            row.DetailsVisibility = row.DetailsVisibility == Visibility.Visible ? Visibility.Collapsed : Visibility.Visible;
            break;
        }

}

Answer 1

您可以为dataGrid尝试RowDetailsTemplate。同时设置RowDetailsVisibilityMode =“VisibleWhenSelected”

        <DataGrid  SelectionMode="Extended" ItemsSource="{Binding}" RowDetailsVisibilityMode="VisibleWhenSelected">
        <DataGrid.RowDetailsTemplate>
            <DataTemplate>
                <StackPanel Orientation="Horizontal" Margin="5">
                        <!-- Content -->
                </StackPanel>
            </DataTemplate>
        </DataGrid.RowDetailsTemplate>
        <DataGrid.Columns>
            <!-- Columns -->
        </DataGrid.Columns>
    </DataGrid>
</Grid>

扩展器按钮在我的wpf数据网格中无法正常工作

1 个答案: