生成jQuery simple treeview所需html的一个小控件
(正在装 VS2008,乘这个时间分享下一个小控件,没法整理demo,只能从项目中copy部分代码)
jQuery simple treeview 需要这样的一段html
<ul class="filetree" id="treeFolder">
<li id="1"><span class="folder">Root</span>
<ul>
<li id="2" class="closed"><span class="folder">node1</span><ul></ul></li>
<li id="22" class="closed"><span class="folder">node2</span><ul></ul></li>
<li id="23" class="closed"><span class="folder">node3</span><ul></ul></li>
</ul>
</li>
<li id="64"><span class="imagebase">root2</span></li>
</ul>
放个空的<ul></ul>在这边,是因为那个节点有子节点,但我们没加载他,当用户点击展开按钮在展开。展开的时候去服务器端取个数据自己加上去,这里就不废话了。
效果图如下:
(上传图片报错呀)
先上代码:
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace aaa.bbb.ccc
{
public class JavaScriptTreeNode : Panel
{
private string _id;
public string ID
{
get
{
return _id;
}
set
{
_id = value;
}
}
private string _name;
public string Name
{
get
{
return _name;
}
set
{
_name = value;
}
}
private string _className;
public string ClassName
{
get
{
return _className;
}
set
{
_className = value;
}
}
private int _childNumber;
public int ChildNumber
{
get
{
return _childNumber;
}
set
{
_childNumber = value;
}
}
private bool _isExpanded=false;
public bool IsExpanded
{
get
{
return _isExpanded;
}
set
{
_isExpanded = value;
}
}
private List<JavaScriptTreeNode> _Nodes = new List<JavaScriptTreeNode>();
public List<JavaScriptTreeNode> Nodes
{
set
{
_Nodes = value;
}
get
{
return _Nodes;
}
}
protected override HtmlTextWriterTag TagKey
{
get
{
return HtmlTextWriterTag.Li;
}
}
protected override void CreateChildControls()
{
base.CreateChildControls();
foreach (JavaScriptTreeNode item in _Nodes)
{
base.Controls.Add(item);
}
}
public override void RenderBeginTag(HtmlTextWriter writer)
{
writer.AddAttribute(HtmlTextWriterAttribute.Id, this.ID);
if (!this.IsExpanded)
{
writer.AddAttribute(HtmlTextWriterAttribute.Class, "closed");
}
base.RenderBeginTag(writer);
writer.WriteBeginTag("span");
if (!string.IsNullOrEmpty(this.ClassName))
{
writer.WriteAttribute("class", this.ClassName);
}
writer.Write(HtmlTextWriter.TagRightChar);
writer.Write(this.Name);
writer.WriteEndTag("span");
if (this.ChildNumber > 0)
{
writer.WriteBeginTag("ul");
writer.Write(HtmlTextWriter.TagRightChar);
}
}
public override void RenderEndTag(HtmlTextWriter writer)
{
if (this.ChildNumber > 0)
{
writer.WriteEndTag("ul");
}
base.RenderEndTag(writer);
}
}
}
如何使用:
.aspx
<%@ Register Assembly="ServerControls" Namespace="aaa.bbb.ccc" TagPrefix="sc" %>
<sc:JavaScriptTree ID="treeFolder" runat="server" ClassName="filetree" />
///
.aspx.cs
JavaScriptTreeNode node = new JavaScriptTreeNode();
node.ID = "123";
node.Name = "name";
node.ChildNumber = 345;
node.ClassName = "folder";
node.IsExpanded = false;
this.treeFolder.Nodes.Add(node);
//node.Nodes.Add(node1);//自己去添加子节点
//node.Nodes.Add(node2);