/// <summary>
/// 递归生成树的HTML代码
/// </summary>
/// <param name="node"></param>
/// <param name="checkOrRadio"></param>
/// <returns></returns>
public static string GenerateTree(TreeNode node, CheckOrRadio checkOrRadio)
{
if (node == null) return "无节点";
TagBuilder liBuilder = new TagBuilder("li");
TagBuilder spanBuilder = new TagBuilder("span")
{
InnerHtml = node.Title,
};
//是否有<input>选择框
if (checkOrRadio != CheckOrRadio.No)
{
TagBuilder checkBoxBuilder = new TagBuilder("input");
checkBoxBuilder.Attributes["type"] = checkOrRadio.ToString();
checkBoxBuilder.Attributes["name"] = "parentid";
checkBoxBuilder.Attributes["id"] = node.Id;
checkBoxBuilder.Attributes["value"] = node.Id;
checkBoxBuilder.Attributes["flag"] = node.Flag;
if (node.IsSelected)
{
checkBoxBuilder.Attributes["checked"] = "checked";
}
liBuilder.InnerHtml = "\r\n" + checkBoxBuilder.ToString() + "\r\n" + spanBuilder.ToString();
}
else
{
liBuilder.InnerHtml = "\r\n" + spanBuilder.ToString();
}
if (node.ChildList.Count > 0)
{
TagBuilder ulBuilder = new TagBuilder("ul");
ulBuilder.AddCssClass("lastclass");
foreach (TreeNode n in node.ChildList)
{
ulBuilder.InnerHtml += "\r\n" + GenerateTree(n, checkOrRadio);
}
liBuilder.InnerHtml += "\r\n" + ulBuilder.ToString();
}
return liBuilder.ToString();
}
/// <summary>
/// 递归生成树的HTML代码
/// </summary>
/// <param name="node"></param>
/// <returns></returns>
public static string GenerateTree(TreeNode node)
{
return GenerateTree(node, CheckOrRadio.CheckBox);
}
/// <summary>
/// 根据任一节点查找树的根节点并生成一颗完整树
/// </summary>
/// <param name="node"></param>
/// <param name="nodeList"></param>
/// <param name="isfindParent"></param>
/// <param name="rootNode"></param>
public static void GetTreeNodes(TreeNode node, List<TreeNode> nodeList, bool isfindParent, ref TreeNode rootNode)
{
if (node == null) return;
if ((node.Parent == null && string.IsNullOrEmpty(node.ParentId)) || isfindParent)
{
node.ChildList = nodeList.Where(n => (n.ParentId == node.Id && !string.IsNullOrEmpty(n.ParentId))
|| (n.Parent == node && n.Parent != null)).ToList();
if (!isfindParent)
rootNode = node;
foreach (TreeNode n in node.ChildList)
{
n.Parent = node;
GetTreeNodes(n, nodeList, true, ref rootNode);
}
}
else
{
if (node.Parent == null && node.ParentId != null)
node.Parent = nodeList.SingleOrDefault(n=>n.Id == node.ParentId);
GetTreeNodes(node.Parent, nodeList, false, ref rootNode);
}
}