这几天有点小活，要求是ASP.NET的，虽然我不怎么看好ASP.NET，但是人家要求了我也就照做吧。
最复杂的部分是一个TreeView。出于兼容性和简单性考虑没有用ASP.NET的TreeView控件，而是参考一篇文章自行写了一个出来。

[singlepic=18460]

技术指标如下：

• 实现：Div+CSS+JavaScript+ASP.NET(C#)
• 功能：可以实现无限级的TreeNode
• 标准：在IE 7和Firefox 3.1下显示效果相同，兼容XHTML 1.0 Strict最严格的网页标准

效果如左图所示。最后一个函数可能会因为超宽看不到全部，具体请参照文章附件中的源代码。
附件下载：http://download.nocoo.us/Download/Archive/TreeViewCode.rar

TreeNode.cs

[code=’c#’]
///

/// TreeView结点类
///

public class TreeNode
{
private string name;
private string href;
private List subNodes = new List();

///

/// 结点名
///

public string Name { get { return name; } }
///

/// 结点链接
///

public string Href { get { return href; } }
///

/// 下级结点个数
///

public int Count { get { return this.subNodes.Count; } }
///

/// 获取或者设置下级结点
///

/// 序号 /// 下级结点
public TreeNode this[int index]
{
get { return subNodes[index]; }
set { subNodes[index] = value; }
}

///

/// 构造函数
///

/// 结点名 public TreeNode(string name)
{
this.name = name;
this.href = null;
}

///

/// 构造函数
///

/// 结点名 /// /// 结点链接 public TreeNode(string name, string href)
{
this.name = name;
this.href = href;
}

///

/// 添加下级结点
///

/// 新结点 public void Add(TreeNode node)
{
subNodes.Add(node);
}
}
[/code]

TreeView.cs

[code=’c#’]
///

/// TreeView
///

public class TreeView
{
private List nodes = new List();

///

/// 填充测试用数据
///

public void FillTestData()
{
TreeNode node1 = new TreeNode(“中国”, “#”);
TreeNode node11 = new TreeNode(“华北地区”, “#”);
TreeNode node111 = new TreeNode(“河南省”, “#”);
TreeNode node112 = new TreeNode(“河北省”, “#”);
TreeNode node113 = new TreeNode(“山东省”, “#”);
TreeNode node1131 = new TreeNode(“青岛市”, “#”);
TreeNode node1132 = new TreeNode(“济南市”, “#”);
TreeNode node11321 = new TreeNode(“市中区”, “#”);
TreeNode node11322 = new TreeNode(“历下区”, “#”);
TreeNode node11323 = new TreeNode(“槐荫区”, “#”);
TreeNode node11324 = new TreeNode(“天桥区”, “#”);
TreeNode node11325 = new TreeNode(“长清区”, “#”);
TreeNode node1133 = new TreeNode(“菏泽市”, “#”);
TreeNode node1134 = new TreeNode(“济宁市”, “#”);
TreeNode node1135 = new TreeNode(“德州市”, “#”);
TreeNode node12 = new TreeNode(“东北地区”, “#”);
TreeNode node13 = new TreeNode(“西北地区”, “#”);
TreeNode node14 = new TreeNode(“华东地区”, “#”);
TreeNode node15 = new TreeNode(“西南地区”, “#”);
TreeNode node16 = new TreeNode(“华南地区”, “#”);
TreeNode node17 = new TreeNode(“华中地区”, “#”);
TreeNode node18 = new TreeNode(“港澳台地区”, “#”);

node1132.Add(node11321);
node1132.Add(node11322);
node1132.Add(node11323);
node1132.Add(node11324);
node1132.Add(node11325);

node113.Add(node1131);
node113.Add(node1132);
node113.Add(node1133);
node113.Add(node1134);
node113.Add(node1135);

node11.Add(node111);
node11.Add(node112);
node11.Add(node113);

node1.Add(node11);
node1.Add(node12);
node1.Add(node13);
node1.Add(node14);
node1.Add(node15);
node1.Add(node16);
node1.Add(node17);
node1.Add(node18);

nodes.Add(node1);
nodes.Add(new TreeNode(“俄罗斯”, “”));
nodes.Add(new TreeNode(“美国”));
nodes.Add(new TreeNode(“韩国”));
nodes.Add(new TreeNode(“澳大利亚”));
nodes.Add(new TreeNode(“印度”, “”));
nodes.Add(new TreeNode(“加拿大”, “”));
}

///

/// 获取TreeView的html代码
///

///
public string GetHtmlString()
{
StringBuilder sb = new StringBuilder();
sb.AppendLine(“

“);
for (int i = 0; i < nodes.Count; i++) { sb.AppendLine(GetNodeHtml(nodes[i], 1, (i + 1).ToString())); } sb.AppendLine("

“);
return sb.ToString();
}

private string GetNodeHtml(TreeNode thisNode, int depth, string id)
{
StringBuilder sb = new StringBuilder();
bool hasSub = (thisNode.Count > 0) ? true : false;
sb.AppendLine(string.Format(“

“, depth, id));
sb.AppendLine(string.Format(
“

{3}

“,
hasSub ? “closedir” : “nodir”,
depth,
id,
(thisNode.Href == null || thisNode.Href.Equals(“”)) ? thisNode.Name : string.Format(“{1}“, thisNode.Href, thisNode.Name)
));
if (hasSub)
{
sb.AppendLine(string.Format(“

“, depth, id));
sb.AppendLine(“

“);
for (int i = 0; i < thisNode.Count; i++) { sb.AppendLine(GetNodeHtml(thisNode[i], depth + 1, string.Format("{0}_{1}", id, i + 1))); } sb.AppendLine("

“);
sb.AppendLine(“

“);
}
sb.AppendLine(“

“);
return sb.ToString();
}
}
[/code]

ASP.NET页面调用：

[code=’c#’]
<% CMC.TreeView list = new CMC.TreeView(); list.FillTestData(); Response.Write(list.GetHtmlString()); %>
[/code]

ASP.NET页面JavaScript：

[code=’js’]
defaultNodeState();

function defaultNodeState()
{
var nodeState = getCookie(“nodeState”);
if(nodeState == null)
{
nodeState = “,|,|,”;
setCookie(“nodeState”,nodeState);
}
var layer = nodeState.split(‘|’);
for(var i=0;i