Question

如果我使用包含库控件的散射视图。用户可以从库容器中拖动元素以散射视图。之后用户可以删除图像。

我创建了样式, 以拖动模板的形式在视图框中包含表面按钮和图像。

问题在于表面按钮的点击功能? 我应写什么来删除图像。

Answer 1

Do you want to remove the whole ScatterViewItem or just the image and keep the button? In general you remove ScatterViewItems by finding the Visual Ancestor with this method:

/// <summary>
    /// Attempts to get an ancestor of the passed-in element with the given type.
    /// </summary>
    /// <typeparam name="T">Type of ancestor to search for.</typeparam>
    /// <param name="descendent">Element whose ancestor to find.</param>
    /// <param name="ancestor">Returned ancestor or null if none found.</param>
    /// <returns>True if found, false otherwise.</returns>
    public static T GetVisualAncestor<T>(DependencyObject descendent) where T : class
    {
        T ancestor = null;
        DependencyObject scan = descendent;
        ancestor = null;

        while (scan != null && ((ancestor = scan as T) == null))
        {
            scan = VisualTreeHelper.GetParent(scan);
        }

        return ancestor;
    }

然后您可以从收藏的项目中移除 SVI : 祖先. items. remove( 后代);

友情链接