数据网格中的相同对象2次

Question

我的数据网格出了问题。当我单击一个元素时，我的行将被选中，我选择的样式将应用。

但是当我滚动时，如果元素再次存在（不重复值，项目引用相同），它将变为蓝色，如选择的默认样式。

具有相同的项目突出显示不是问题，但我想放置我选择的样式（行标题中的紫点）。在调试中，未选择蓝色的行（如果它们是我的样式将适用）。重复对象的突出显示属性是什么。

修改

Binding oBindRowSelected = new Binding();
Binding oBindCellSelected = new Binding();
Binding oBindBackGround = new Binding();
Binding oBindBorderBrush = new Binding();
Binding oBindForeGround = new Binding();
oBindRowSelected.RelativeSource = new RelativeSource(RelativeSourceMode.FindAncestor, typeof(DataGridRow), 1);
oBindCellSelected.RelativeSource = new RelativeSource(RelativeSourceMode.FindAncestor, typeof(DataGridCell), 1);
oBindRowSelected.Path = new PropertyPath(DataGridRow.IsSelectedProperty);
oBindCellSelected.Path = new PropertyPath(DataGridCell.IsSelectedProperty);
oBindBackGround.Path = new PropertyPath(DataGridRow.BackgroundProperty);
oBindBorderBrush.Path = new PropertyPath(DataGridRow.BorderBrushProperty);
oBindForeGround.Path = new PropertyPath(DataGridRow.ForegroundProperty);


DataTrigger oTriggerSelectedImageVisibility = new DataTrigger();
oTriggerSelectedImageVisibility.Binding = oBindRowSelected;
oTriggerSelectedImageVisibility.Value = true;
oTriggerSelectedImageVisibility.Setters.Add(new Setter(Border.VisibilityProperty, Visibility.Visible));
DataTrigger oTriggerSelectedCell = new DataTrigger();
oTriggerSelectedCell.Binding = oBindRowSelected;
oTriggerSelectedCell.Value = true;
oTriggerSelectedCell.Setters.Add(new Setter(DataGridCell.BackgroundProperty, oBindBackGround));
oTriggerSelectedCell.Setters.Add(new Setter(DataGridCell.BorderBrushProperty, oBindBorderBrush));
oTriggerSelectedCell.Setters.Add(new Setter(DataGridCell.ForegroundProperty, oBindForeGround));

Style oRowHeaderSelectorStyle = new Style(typeof(Border));
oRowHeaderSelectorStyle.Setters.Add(new Setter(Border.CornerRadiusProperty, new CornerRadius(7)));
oRowHeaderSelectorStyle.Setters.Add(new Setter(Border.HeightProperty, 15.0));
oRowHeaderSelectorStyle.Setters.Add(new Setter(Border.WidthProperty, 15.0));
oRowHeaderSelectorStyle.Setters.Add(new Setter(Border.BackgroundProperty, Brushes.BlueViolet));
oRowHeaderSelectorStyle.Setters.Add(new Setter(Border.VisibilityProperty, Visibility.Hidden));
oRowHeaderSelectorStyle.Triggers.Add(oTriggerSelectedImageVisibility);

ControlTemplate oCtlTemplate = new ControlTemplate();
FrameworkElementFactory oBorder = new FrameworkElementFactory(typeof(Border));
oBorder.SetValue(Border.StyleProperty, oRowHeaderSelectorStyle);
oCtlTemplate.VisualTree = oBorder;

Style oRowHeaderStyle = new Style(typeof(DataGridRowHeader));
oRowHeaderStyle.Setters.Add(new Setter(DataGridRowHeader.WidthProperty, 25.0));
oRowHeaderStyle.Setters.Add(new Setter(DataGridRowHeader.TemplateProperty, oCtlTemplate));

Style oCellStyle = new Style(typeof(DataGridCell));
oCellStyle.Triggers.Add(oTriggerSelectedCell);

this.RowHeaderStyle = oRowHeaderStyle;
this.CellStyle = oCellStyle;

我正在扩展，所以我的风格是C＃代码。