FrameworkElementFactory 动态添加Button

收藏

同通过如下代码动态添加了Button，但是点击事件点击没有生效，请问是什么原因呢

Column item = new Column
         {
            Header = header,
            IsReadOnly = true,
            Binding = new Binding(path),
            Width = new GridLength(whidth),
            HorizontalAlignment = HorizontalAlignment.Center,
            HeaderHorizontalAlignment = HorizontalAlignment.Center
         };
         if ("操作".Equals(header))
         {

            DataGridTemplateColumn dataGridTemplateColumn = new DataGridTemplateColumn();
            dataGridTemplateColumn.Header = "操作";
            dataGridTemplateColumn.Width = new DataGridLength(1, DataGridLengthUnitType.Star);

            //Grid分列
            FrameworkElementFactory gridFactory = new FrameworkElementFactory(typeof(Grid));
            FrameworkElementFactory col1 = new FrameworkElementFactory(typeof(ColumnDefinition));
            FrameworkElementFactory col2 = new FrameworkElementFactory(typeof(ColumnDefinition));

            col1.SetValue(ColumnDefinition.WidthProperty, new GridLength(1, GridUnitType.Star));
            col2.SetValue(ColumnDefinition.WidthProperty, new GridLength(1, GridUnitType.Star));
            gridFactory.AppendChild(col1);
            gridFactory.AppendChild(col2);

            //添加两个Button
            FrameworkElementFactory btn1Factory = new FrameworkElementFactory(typeof(Button));
            btn1Factory.SetValue(Button.StyleProperty, Resources["ListEditButton"] as Style);
            btn1Factory.SetValue(Button.MarginProperty, new Thickness(0, 0, 5, 0));
            //添加事件
            btn1Factory.AddHandler(Button.ClickEvent, new RoutedEventHandler(ModifyData_Click));

            FrameworkElementFactory btn2Factory = new FrameworkElementFactory(typeof(Button));
            btn2Factory.SetValue(Button.StyleProperty, Resources["ListDeleteButton"] as Style);
            btn2Factory.AddHandler(Button.ClickEvent, new RoutedEventHandler(DeleteData_Click));
            btn2Factory.SetValue(Grid.ColumnProperty, 1);

            gridFactory.AppendChild(btn1Factory);
            gridFactory.AppendChild(btn2Factory);
            //关键代码
            DataTemplate cellTemplate1 = new DataTemplate();
            cellTemplate1.VisualTree = gridFactory;
            Trigger trigger = new Trigger();
            cellTemplate1.Seal();
            dataGridTemplateColumn.CellTemplate = cellTemplate1;
            item.CellTemplate = cellTemplate1;
         }
         return item;