wpf数据网格关注selectemItem

本文关键字：selectemItem 网格 数据 数据网 wpf | 更新日期: 2023-09-27 18:00:31

我以编程方式在数据网格中选择Item。但问题是，我必须手动向下滚动以选择项目。我需要自动做到这一点。到目前为止，我已经尝试了很多东西，但都不适合我…

DataGrid:

        <DataGrid x:Name="coreServiceLogDataGrid"
              ItemsSource="{Binding}"
              IsReadOnly="True"
              RowDetailsVisibilityMode="VisibleWhenSelected"
              SelectionMode="Single"
              IsSynchronizedWithCurrentItem="True"
              SelectedItem="{Binding Path=CurrentCoreServiceLogDataItem,Source={StaticResource synchronizer}, Mode=TwoWay}"
              GotFocus="coreServiceLogDataGrid_GotFocus_1"
              Style="{DynamicResource ResourceKey=dataGridStyle}"
              ...>
              ...
    </DataGrid>

和GotFocus:的代码隐藏

        private void coreServiceLogDataGrid_GotFocus_1(object sender, System.Windows.RoutedEventArgs e) {
          if (coreServiceLogDataGrid.SelectedItem != null) {
            coreServiceLogDataGrid.ScrollIntoView(coreServiceLogDataGrid.SelectedItem);
          }
         }

wpf数据网格关注selectemItem

我过去也遇到过类似的问题。我已经为DataGridRow做了这件事，但它是基于这个网站上发现的TreeViewItem的附加行为。

这是code-behind:的代码

/// <summary>
/// Exposes attached behaviors that can be
/// applied to DataGridRow objects.
/// </summary>
public static class DataGridRowBehavior
{
    #region IsBroughtIntoViewWhenSelected
    public static bool GetIsBroughtIntoViewWhenSelected(DataGridRow dataGridRow)
    {
        return (bool)dataGridRow.GetValue(IsBroughtIntoViewWhenSelectedProperty);
    }
    public static void SetIsBroughtIntoViewWhenSelected(
      DataGridRow dataGridRow, bool value)
    {
        dataGridRow.SetValue(IsBroughtIntoViewWhenSelectedProperty, value);
    }
    public static readonly DependencyProperty IsBroughtIntoViewWhenSelectedProperty =
        DependencyProperty.RegisterAttached(
        "IsBroughtIntoViewWhenSelected",
        typeof(bool),
        typeof(DataGridRowBehavior),
        new UIPropertyMetadata(false, OnIsBroughtIntoViewWhenSelectedChanged));
    static void OnIsBroughtIntoViewWhenSelectedChanged(
      DependencyObject depObj, DependencyPropertyChangedEventArgs e)
    {
        DataGridRow item = depObj as DataGridRow;
        if (item == null)
            return;
        if (e.NewValue is bool == false)
            return;
        if ((bool)e.NewValue)
            item.Selected += OnDataGridRowSelected;
        else
            item.Selected -= OnDataGridRowSelected;
    }
    static void OnDataGridRowSelected(object sender, RoutedEventArgs e)
    {
        // Only react to the Selected event raised by the TreeViewItem
        // whose IsSelected property was modified. Ignore all ancestors
        // who are merely reporting that a descendant's Selected fired.
        if (!Object.ReferenceEquals(sender, e.OriginalSource))
            return;
        DataGridRow item = e.OriginalSource as DataGridRow;
        if (item != null)
            item.BringIntoView();
    }
    #endregion // IsBroughtIntoViewWhenSelected
}

在XAML中，将此代码放在DataGrid:的标签之间

<DataGrid.ItemContainerStyle>
    <Style TargetType="{x:Type DataGridRow}">
        <Setter Property="uc:DataGridRowBehavior.IsBroughtIntoViewWhenSelected" Value="True" />
    </Style>
</DataGrid.ItemContainerStyle>
/// note: uc is a namespace I have defined for where the DataGridRowBehavior class is located

附加注释：我将SelectionUnit设置为FullRow，将SelectionMode设置为Single。我不确定更改这些属性是否会影响这是否有效。

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