XamComboEditor SelectedItemChangedEvent 在 XamDataGrid 中不停地触发

Question

我已经将XamComboEditor绑定在XamDataGrid的两列中。当我从 XamComboEditor1 中选择一个项目时，我想将特定项目绑定到 XamComboEditor2。我已将 SelectedItemChanged 事件附加到 XamComboEditor1。该事件在选择项目时不停地触发。

XAML-

 <Window x:Class="WpfApplication2.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:sys="clr-namespace:System;assembly=mscorlib"
    xmlns:igDP="http://infragistics.com/DataPresenter"
    xmlns:igRibbon="http://infragistics.com/Ribbon"
    xmlns:igOB="http://infragistics.com/OutlookBar"
    xmlns:igDock="http://infragistics.com/DockManager"
    xmlns:igTiles="http://infragistics.com/Tiles"
    xmlns:igEditors="http://infragistics.com/Editors"
    Title="Window1" Height="300" Width="720">
    <Window.Resources>
    </Window.Resources>
    <Grid>
        <DockPanel LastChildFill="True" Margin="0,26,0,-26">
            <igDP:XamDataGrid x:Name="XamDataGrid1">
            </igDP:XamDataGrid>
        </DockPanel>
    </Grid>
</Window>

代码隐藏 -

    using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Infragistics.Windows.DataPresenter;
using Infragistics.Windows.Editors;
namespace WpfApplication2
{
  /// <summary>
  /// Interaction logic for MainWindow.xaml
  /// </summary>
  public partial class MainWindow : Window
  {
    public MainWindow()
    {
      InitializeComponent();
      EventManager.RegisterClassHandler(typeof(ValueEditor),
                    ValueEditor.ValueChangedEvent,
                    new RoutedPropertyChangedEventHandler<object>(OnValueChanged));
      ComboBoxItemsProvider provider = new ComboBoxItemsProvider();
      for (int i = 0; i < 6; i++)
        provider.Items.Add(new ComboBoxDataItem(i, "Item " + i.ToString()));
      FieldLayout fieldLayout = new FieldLayout();
      UnboundField fld1 = new UnboundField();
      fld1.Name = "Visibility Setting1";
      Style style1 = new Style(typeof(XamComboEditor));
      style1.Setters.Add(new Setter(XamComboEditor.ItemsProviderProperty, provider));
      style1.Setters.Add(new EventSetter(XamComboEditor.SelectedItemChangedEvent, new RoutedPropertyChangedEventHandler<object>(XamComboEditor1_SelectedItemChanged)));
      fld1.Settings.EditorStyle = style1;
      fld1.Settings.EditorType = typeof(XamComboEditor);
      fieldLayout.Fields.Add(fld1);
      UnboundField fld2 = new UnboundField();
      fld2.Name = "Visibility Setting2";
      Style style2 = new Style(typeof(XamComboEditor));
      fld2.Settings.EditorStyle = style2;
      fld2.Settings.EditorType = typeof(XamComboEditor);
      fieldLayout.Fields.Add(fld2);
      this.XamDataGrid1.FieldLayouts.Add(fieldLayout);
      this.XamDataGrid1.BindToSampleData = true;
    }
    void OnValueChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
    {
      if (sender is XamComboEditor || sender is XamCheckEditor || sender is XamDateTimeEditor)
      {
        (sender as ValueEditor).EndEditMode(true, true);
        if (sender is XamComboEditor)
        {
          XamComboEditor comboEditor = (XamComboEditor)sender;
        }
      }
    }

    private void XamComboEditor1_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
    {
      // Create combo box items provider for freight modes
      ComboBoxItemsProvider provider = new ComboBoxItemsProvider();
      for (int i = 0; i < 10; ++i)
      {
        provider.Items.Add(new ComboBoxDataItem(i.ToString(), i.ToString()));
      }
      //// Get unbound field associated with index
      Record record = this.XamDataGrid1.ActiveRecord;
      // Get the combo editor with record
      UnboundField uFld = (UnboundField)record.FieldLayout.Fields[1];
      // Set style for uFld
      Style style = new Style(typeof(XamComboEditor));
      style.Setters.Add(new Setter(XamComboEditor.ItemsProviderProperty, provider));
      style.Setters.Add(new Setter(XamComboEditor.DropDownResizeModeProperty, Infragistics.Windows.Controls.PopupResizeMode.None));
      style.Setters.Add(new Setter(XamComboEditor.IsAlwaysInEditModeProperty, false));
      style.Setters.Add(new EventSetter(XamComboEditor.SelectedItemChangedEvent, new RoutedPropertyChangedEventHandler<object>(XamComboEditor2_SelectedItemChanged)));
      style.Setters.Add(new Setter(XamComboEditor.IsEditableProperty, false));
      uFld.Settings.EditorStyle = style;
      uFld.Settings.EditorType = typeof(XamComboEditor);
      uFld.Settings.InvalidValueBehavior = InvalidValueBehavior.RetainValue;
      uFld.Settings.AllowCellVirtualization = false;
      e.Handled = true;
    }
    private void XamComboEditor2_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
    {
    }
  }
}

Answer 1

不应该引用

未绑定字段中的样式。

在 - 找到解决方案 -

http://blogsprajeesh.blogspot.com/2010/03/infragistics-working-with-2.html