TreeView使用集锦
2007-07-05 16:54
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2.运行时无法显示
一般是TreeView的版本问题，最好下载英文版自动安装版本重新安装，安装前应该先到添加删除程序里卸掉原版本
3.显示格式出错（非树状显示）
TreeView要求客户端浏览器版本为IE5.5及以上，最好要求客户端升级为IE6.0
4.框架里使用TreeView
设置NavigateUrl、Target属性，可更新另外的Frame
5.找不到TreeNode类
使用TreeView，最好添加namespace：using Microsoft.Web.UI.WebControls;
6.遍历TreeView节点(递归算法)
1 1private void Page_Load(object sender, System.EventArgs e)
2 5void GetAllNodeText(TreeNodeCollection tnc)
6TreeNode pnode;
if(node.Parent is TreeNode)
pnode=(TreeNode)node.Parent;
else
//node is root node
8.修改TreeView样式（示例）
<iewc:TreeView id="TreeView1" runat="server" HoverStyle="color:blue;background:#00ffCC;" DefaultStyle="background:red;color:yellow;" SelectedStyle="color:red;background:#00ff00;">
用代码：
TreeView1.DefaultStyle["font-size"] = "20pt";
9.展开时不提交，改变选择节点时才提交
将autopostback设置成false;
在body里添加 <body onload="initTree()">
然后在PageLoad里写：
string strTreeName = "TreeView1";
string strRef = Page.GetPostBackEventReference(TreeView1);
string strScript = "<script language="JavaScript"> " + "<!-- " + " function initTree() { " +" " + strTreeName + ".onSelectedIndexChange = function() { " + "if (event.oldTreeNodeIndex !=
event.newTreeNodeIndex) " + "this.queueEvent('onselectedindexchange', event.oldTreeNodeIndex + ',' + event.newTreeNodeIndex); " + "window.setTimeout('" + strRef.Replace("'","\'") + "', 0, 'JavaScript'); " + " } " + " } " + "// --> " + "</script>";
Page.RegisterClientScriptBlock("InitTree",strScript );
这样就只有你点击的节点更改的时候才提交！
10.TreeView结合XML
把XML文件设置为如下格式，然后直接设置TreeNodeSrc为该XML文件就行
<?xml version="1.0" encoding="GB2312"?>
<TREENODES>
<TREENODE TEXT="node0" EXPANDED="true">
<TREENODE TEXT="node1"/>
<TREENODE TEXT="node2"/>
</TREENODE>
<TREENODE TEXT="node3" NavigateURL="3.aspx"/>
</TREENODES>
或者用代码
TreeView1.TreeNodeSrc="a.xml";
TreeView1.DataBind();
客户端控制TreeView
http://expert.csdn.net/Expert/topic/1382/1382892.xml
1.设置所选节点，如选中第二个节点
function SetSelNode()
2.得到所选节点的Text，ID或NodeData
function GetAttribute()
替换Text为ID或NodeData，可分别得到所选节点的ID或NodeData
3.修改节点属性，如修改第一个节点的Text
function ModifyNode()
4.得到点击节点
function TreeView1.onclick()
5.添加节点
function AddNode()
var AllRootNode=new Array();
AllRootNode=TreeView1.getChildren();
AlertNode(AllRootNode);
function AlertNode(NodeArray)
<HTML>
<HEAD>
</HEAD>
<body onload="initchecknode()">
<iewc:TreeView id="TreeView1" runat="server" ExpandLevel="5">
<iewc:TreeNode NodeData="0" CheckBox="True" Text="Node0" Expanded="True">
<iewc:TreeNode NodeData="1" CheckBox="True" Text="Node1" Expanded="True"></iewc:TreeNode>
<iewc:TreeNode NodeData="2" CheckBox="True" Text="Node2" Expanded="True">
<iewc:TreeNode NodeData="3" CheckBox="True" Text="Node3" Expanded="True">
<iewc:TreeNode NodeData="4" CheckBox="True" Text="Node4"
Expanded="True"></iewc:TreeNode>
</iewc:TreeNode>
</iewc:TreeNode>
</iewc:TreeNode>
<iewc:TreeNode NodeData="5" CheckBox="True" Text="Node5" Expanded="True">
<iewc:TreeNode NodeData="6" CheckBox="True" Text="Node6" Expanded="True"></iewc:TreeNode>
</iewc:TreeNode>
<iewc:TreeNode NodeData="7" CheckBox="True" Text="Node7" Expanded="True">
<iewc:TreeNode NodeData="8" CheckBox="True" Text="Node8" Expanded="True">
<iewc:TreeNode NodeData="9" CheckBox="True" Text="Node9"
Expanded="True"></iewc:TreeNode>
</iewc:TreeNode>
</iewc:TreeNode>
</iewc:TreeView><P>
<TABLE id="Table1" cellSpacing="1" cellPadding="1" width="300" border="1">
<TR>
<TD>
<asp:Label id="Label1" runat="server">checked</asp:Label></TD>
<TD>
<INPUT id="checked" type="text" size="32"></TD>
</TR>
<TR>
<TD>
<asp:Label id="Label2" runat="server">unchecked</asp:Label></TD>
<TD><INPUT id="unchecked" type="text" size="32"></TD>
</TR>
</TABLE>
<br>
</P>
</body>
</HTML>
第二个例子是关于如何在服务器端得到客户端设置后的节点选中状态
<%...@ Register TagPrefix="iewc" Namespace="Microsoft.Web.UI.WebControls" Assembly="Microsoft.Web.UI.WebControls,
Version=1.0.2.226, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>
<HTML>
<HEAD>
<script language="C#" runat="server">
private void Button1_Click(object sender, System.EventArgs e)
{
Response.Write(TreeView1.Nodes[0].Checked);
}
</script>
<script language="javascript">
function set_check()
{
var nodeindex = "0";
var node=TreeView1.getTreeNode(nodeindex);
node.setAttribute("Checked","True");
TreeView1.queueEvent('oncheck', nodeindex);
}
</script>
</HEAD>
<body>
<form id="TestTree" method="post" runat="server">
<iewc:TreeView id="TreeView1" runat="server">
<iewc:TreeNode CheckBox="True" Text="Node0"></iewc:TreeNode>
</iewc:TreeView>
<br>
<input type="button" value="set check" onclick="set_check()">
<br>
<asp:Button id="Button1" runat="server" Text="submit" OnClick="Button1_Click"></asp:Button>
</form>
</body>
</HTML>
一般是TreeView的版本问题，最好下载英文版自动安装版本重新安装，安装前应该先到添加删除程序里卸掉原版本
3.显示格式出错（非树状显示）
TreeView要求客户端浏览器版本为IE5.5及以上，最好要求客户端升级为IE6.0
4.框架里使用TreeView
设置NavigateUrl、Target属性，可更新另外的Frame
5.找不到TreeNode类
使用TreeView，最好添加namespace：using Microsoft.Web.UI.WebControls;
6.遍历TreeView节点(递归算法)
1 1private void Page_Load(object sender, System.EventArgs e)
2 5void GetAllNodeText(TreeNodeCollection tnc)
6TreeNode pnode;
if(node.Parent is TreeNode)
pnode=(TreeNode)node.Parent;
else
//node is root node
8.修改TreeView样式（示例）
<iewc:TreeView id="TreeView1" runat="server" HoverStyle="color:blue;background:#00ffCC;" DefaultStyle="background:red;color:yellow;" SelectedStyle="color:red;background:#00ff00;">
用代码：
TreeView1.DefaultStyle["font-size"] = "20pt";
9.展开时不提交，改变选择节点时才提交
将autopostback设置成false;
在body里添加 <body onload="initTree()">
然后在PageLoad里写：
string strTreeName = "TreeView1";
string strRef = Page.GetPostBackEventReference(TreeView1);
string strScript = "<script language="JavaScript"> " + "<!-- " + " function initTree() { " +" " + strTreeName + ".onSelectedIndexChange = function() { " + "if (event.oldTreeNodeIndex !=
event.newTreeNodeIndex) " + "this.queueEvent('onselectedindexchange', event.oldTreeNodeIndex + ',' + event.newTreeNodeIndex); " + "window.setTimeout('" + strRef.Replace("'","\'") + "', 0, 'JavaScript'); " + " } " + " } " + "// --> " + "</script>";
Page.RegisterClientScriptBlock("InitTree",strScript );
这样就只有你点击的节点更改的时候才提交！
10.TreeView结合XML
把XML文件设置为如下格式，然后直接设置TreeNodeSrc为该XML文件就行
<?xml version="1.0" encoding="GB2312"?>
<TREENODES>
<TREENODE TEXT="node0" EXPANDED="true">
<TREENODE TEXT="node1"/>
<TREENODE TEXT="node2"/>
</TREENODE>
<TREENODE TEXT="node3" NavigateURL="3.aspx"/>
</TREENODES>
或者用代码
TreeView1.TreeNodeSrc="a.xml";
TreeView1.DataBind();
客户端控制TreeView
http://expert.csdn.net/Expert/topic/1382/1382892.xml
1.设置所选节点，如选中第二个节点
function SetSelNode()
2.得到所选节点的Text，ID或NodeData
function GetAttribute()
替换Text为ID或NodeData，可分别得到所选节点的ID或NodeData
3.修改节点属性，如修改第一个节点的Text
function ModifyNode()
4.得到点击节点
function TreeView1.onclick()
5.添加节点
function AddNode()
var AllRootNode=new Array();
AllRootNode=TreeView1.getChildren();
AlertNode(AllRootNode);
function AlertNode(NodeArray)
<HTML>
<HEAD>
</HEAD>
<body onload="initchecknode()">
<iewc:TreeView id="TreeView1" runat="server" ExpandLevel="5">
<iewc:TreeNode NodeData="0" CheckBox="True" Text="Node0" Expanded="True">
<iewc:TreeNode NodeData="1" CheckBox="True" Text="Node1" Expanded="True"></iewc:TreeNode>
<iewc:TreeNode NodeData="2" CheckBox="True" Text="Node2" Expanded="True">
<iewc:TreeNode NodeData="3" CheckBox="True" Text="Node3" Expanded="True">
<iewc:TreeNode NodeData="4" CheckBox="True" Text="Node4"
Expanded="True"></iewc:TreeNode>
</iewc:TreeNode>
</iewc:TreeNode>
</iewc:TreeNode>
<iewc:TreeNode NodeData="5" CheckBox="True" Text="Node5" Expanded="True">
<iewc:TreeNode NodeData="6" CheckBox="True" Text="Node6" Expanded="True"></iewc:TreeNode>
</iewc:TreeNode>
<iewc:TreeNode NodeData="7" CheckBox="True" Text="Node7" Expanded="True">
<iewc:TreeNode NodeData="8" CheckBox="True" Text="Node8" Expanded="True">
<iewc:TreeNode NodeData="9" CheckBox="True" Text="Node9"
Expanded="True"></iewc:TreeNode>
</iewc:TreeNode>
</iewc:TreeNode>
</iewc:TreeView><P>
<TABLE id="Table1" cellSpacing="1" cellPadding="1" width="300" border="1">
<TR>
<TD>
<asp:Label id="Label1" runat="server">checked</asp:Label></TD>
<TD>
<INPUT id="checked" type="text" size="32"></TD>
</TR>
<TR>
<TD>
<asp:Label id="Label2" runat="server">unchecked</asp:Label></TD>
<TD><INPUT id="unchecked" type="text" size="32"></TD>
</TR>
</TABLE>
<br>
</P>
</body>
</HTML>
第二个例子是关于如何在服务器端得到客户端设置后的节点选中状态
<%...@ Register TagPrefix="iewc" Namespace="Microsoft.Web.UI.WebControls" Assembly="Microsoft.Web.UI.WebControls,
Version=1.0.2.226, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>
<HTML>
<HEAD>
<script language="C#" runat="server">
private void Button1_Click(object sender, System.EventArgs e)
{
Response.Write(TreeView1.Nodes[0].Checked);
}
</script>
<script language="javascript">
function set_check()
{
var nodeindex = "0";
var node=TreeView1.getTreeNode(nodeindex);
node.setAttribute("Checked","True");
TreeView1.queueEvent('oncheck', nodeindex);
}
</script>
</HEAD>
<body>
<form id="TestTree" method="post" runat="server">
<iewc:TreeView id="TreeView1" runat="server">
<iewc:TreeNode CheckBox="True" Text="Node0"></iewc:TreeNode>
</iewc:TreeView>
<br>
<input type="button" value="set check" onclick="set_check()">
<br>
<asp:Button id="Button1" runat="server" Text="submit" OnClick="Button1_Click"></asp:Button>
</form>
</body>
</HTML>
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