Dynatree与ASP.NET MVC

Question

有没有人有任何使用Dynatree插件与MVC的例子？我一直在与它搏斗,没有太大进展.我有一个动作方法,它返回一个JsonResult(但选择基础表中的所有列,不知道这是否是问题),在我的initajax调用中,我正在做的就是调用这个方法.

如果不是太麻烦,我正在寻找示例View和Controller动作方法.

在此先感谢您的帮助

Answer 1

您需要创建一个对象来序列化节点,例如.

public interface ITreeItem
{
}


    /// <summary>
    /// Tree Item Leaf.
    /// </summary>
    public class TreeItemLeaf :ITreeItem
    {
        /// <summary>
        /// Gets the Title.
        /// </summary>
        public string title;

        /// <summary>
        /// Gets the Tooltip.
        /// </summary>
        public string tooltip;

        /// <summary>
        /// Gets the key.
        /// </summary>
        public string key;

        /// <summary>
        /// Gets the Data.
        /// </summary>
        public string addClass;

        /// <summary>
        /// Gets the Children.
        /// </summary>
        public IList<ITreeItem> children;

        /// <summary>
        /// Gets the rel attr.
        /// </summary>
        public string rel;

        /// <summary>
        /// Gets the State.
        /// </summary>
        public bool isFolder;

        /// <summary>
        /// Gets the State.
        /// </summary>
        public bool isLazy;

        /// <summary>
        /// Initializes a new instance of the <see cref="TreeItemLeaf"/> class.
        /// </summary>
        public TreeItemLeaf()
        {
            children = new List<ITreeItem>();
        }
    /// <summary>
    /// Initializes a new instance of the <see cref="TreeItemLeaf"/> class.
    /// </summary>
    /// <param name="type">The type of node.</param>
    /// <param name="id">The Id of the node.</param>
    /// <param name="title">The Title of the node.</param>
    /// <param name="tooltip">The Tooltip of the node.</param>
    public TreeItemLeaf(String type, Guid id, String title, String tooltip)
    {
        key = id.ToString();
        this.title = title;
        isFolder = false;
        isLazy = false;
        this.tooltip = tooltip;
        children = new List<ITreeItem>();
}

}


   /// <summary>
    /// Tree Item.
    /// </summary>
    public class TreeItem : TreeItemLeaf
    {
        /// <summary>
        /// Gets the State.
        /// </summary>
        public new bool isFolder;

        /// <summary>
        /// Initializes a new instance of the <see cref="TreeItem"/> class.
        /// </summary>
        public TreeItem() : base()
        {
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="TreeItem"/> class.
        /// </summary>
        /// <param name="type">The type of node.</param>
        /// <param name="id">The Id of the node.</param>
        /// <param name="title">The Title of the node.</param>
        /// <param name="tooltip">The tooltip of the node.</param>
        public TreeItem(String type, Guid id, String title, String tooltip) : base(type, id, title, tooltip)
        {
            isFolder = true;
            isLazy = true;
        }

    }

一旦你有了这个,你可以返回一个Json(IList<ITreeItem>)你需要从你的结果中建立起来的东西.

如果您访问Dynatee演示http://wwwendt.de/tech/dynatree/doc/samples.html,您可以使用Firefox/Firebug来研究HTTP请求,以确切了解传入和返回的内容.

我视图中的树如下:

        // --- Initialize first Dynatree -------------------------------------------
        $("#tree").dynatree({
            fx: { height: "toggle", duration: 500 },
            selectMode: 1,
            clickFolderMode: 1,
            children : @Html.Raw(String.Format("{0}", ViewData["tree"]).Replace("\"children\":[],", "")),
            onLazyRead: function (node) {
                node.appendAjax({ 
                    url: "@Url.Action("treedata", "tree")",
                    type: "GET",
                    data: { "id": node.data.key, // Optional url arguments
                        "mode": "all"
                    },
                     error: function(node, XMLHttpRequest, textStatus, errorThrown) {

                               }
                     }
                });
            }, //.... cut short for brevity

我在"children:"部分嵌入了初始树状态.Ajax读取正在"onLazyRead:"部分中设置.

我的Ajax调用是:

    public JsonResult TreeData(FormCollection form)
    {
        return GetTreeData(Request.QueryString["id"], Request.QueryString["uitype"]);
    }

GetTreeData()函数返回Json(ITreeItem);

我建议你使用Firefox/Firebug及其"NET"功能来查看将要发生的事情.

希望有所帮助.