SharePoint2007树视图定制：浏览SPList节点下的内容

    树视图在Web平台中是一种常见的菜单视图，特别是文档层级树目录结构的应用。在SharePoint2007中所推崇使用的快速启动由于只能配置2级菜单，很多时候不能满足要求。用Designer研究了一下树控件部分的页面代码。发现有几个关键属性似乎可以定制：rootContextObjet（应该是根节点的类型）、RootListId（根列表节点）、RootWebId（根站点节点）。但是默认情况下，rootContextObject=“Web”，其它值查遍文档也没有发现(郁闷....)，RootListId和RootWebId都是空的，或者是"0000-0000。。。。"。 
显然，rootContextObject不能是"Web",随便猜着试用了“List”、“SPList”都不行，不得已求助于 Reflector，发现rootContextObject有三种判断，"Web"、"List"和空。而"List"显然是代码运行时产生的。我试了赋值rootContextObject=“List”果然不行。就干脆把rootContextObject删掉。OK了。

如果要显示多个列表，可以如下：使用多个树控件和层级数据源。代码如下：

 1   < div  class = " ms-treeviewouter " >
 2                      < SharePoint:SPHierarchyDataSourceControl
 3                      runat = " server "
 4                      id = " TreeViewDataSource "
 5                      RootListId = " ff1af9a7-daac-42fe-b9e3-26f08c8992e7 "
 6                      RootWebId = " 83d09d8e-484e-4020-8b64-d2ee993df38c "
 7                      IncludeDiscussionFolders = " true "
 8                      />
 9                      < SharePoint:SPHierarchyDataSourceControl
10                      runat = " server "
11                      id = " TreeViewDataSource1 "
12                      RootListId = " 4068d162-02fc-46fe-9490-78e451c9e377 "
13                      RootWebId = " 83d09d8e-484e-4020-8b64-d2ee993df38c "
14                      IncludeDiscussionFolders = " true "
15                      />
16
17                      < SharePoint:SPRememberScroll runat = " server "  id = " TreeViewRememberScroll "  onscroll = " javascript:_spRecordScrollPositions(this); "  Style = " overflow: auto;height: 400px;width: 150px;  " >
18                      < Sharepoint:SPTreeView
19                         id = " WebTreeView "
20                         runat = " server "
21                         ShowLines = " false "
22                         DataSourceId = " TreeViewDataSource "
23                         ExpandDepth = " 0 "
24                         SelectedNodeStyle - CssClass = " ms-tvselected "
25                         NodeStyle - CssClass = " ms-navitem "
26                         NodeStyle - HorizontalPadding = " 2 "
27                         SkipLinkText = ""
28                         NodeIndent = " 12 "
29                         ExpandImageUrl = " /_layouts/images/tvplus.gif "
30                         CollapseImageUrl = " /_layouts/images/tvminus.gif "
31                         NoExpandImageUrl = " /_layouts/images/tvblank.gif "
32                      >
33                      </ Sharepoint:SPTreeView >
34                      < Sharepoint:SPTreeView
35                         id = " WebTreeView1 "
36                         runat = " server "
37                         ShowLines = " false "
38                         DataSourceId = " TreeViewDataSource1 "
39                         ExpandDepth = " 0 "
40                         SelectedNodeStyle - CssClass = " ms-tvselected "
41                         NodeStyle - CssClass = " ms-navitem "
42                         NodeStyle - HorizontalPadding = " 2 "
43                         SkipLinkText = ""
44                         NodeIndent = " 12 "
45                         ExpandImageUrl = " /_layouts/images/tvplus.gif "
46                         CollapseImageUrl = " /_layouts/images/tvminus.gif "
47                         NoExpandImageUrl = " /_layouts/images/tvblank.gif "
48                      >
49                      </ Sharepoint:SPTreeView >
50
51                      </ Sharepoint:SPRememberScroll >
52                    </ div >
53