[原创]根据TreeView中节点的不同,来绑定不同的dropdownlist
1.TreeView和DropDownList在一个页面
后台.vb代码
2.TreeView和DropDownList不在一个页面，分别在2个框架中
框架页
左框架页中 有个TreeView
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<iewc:TreeView id="TreeView1" style="Z-INDEX: 101; LEFT: 8px; POSITION: absolute; TOP: 80px" runat="server">
<iewc:TreeNode Text="Node0" >
<iewc:TreeNode Text="Node0"></iewc:TreeNode>
</iewc:TreeNode>
<iewc:TreeNode Text="Node1"></iewc:TreeNode>
<iewc:TreeNode Text="Node2"></iewc:TreeNode>
<iewc:TreeNode Text="Node3"></iewc:TreeNode>
</iewc:TreeView>
</form>
</body>
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Not IsPostBack Then
Dim i As Int16
For i = 0 To TreeView1.Nodes.Count - 1
TreeView1.Nodes(i).NavigateUrl = "treedrpRight.aspx?nid=" + TreeView1.Nodes(i).Text
TreeView1.Nodes(i).Target = "main"
Next
End If
End Sub
右框架
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="treeDrpRight.aspx.vb" Inherits="Ex.treeDrpRight"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>treeDrpRight</title>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" content="Visual Basic .NET 7.1">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<asp:DropDownList id="ddl" style="Z-INDEX: 101; LEFT: 32px; POSITION: absolute; TOP: 80px" runat="server"
Width="136px"></asp:DropDownList>
</form>
</body>
</HTML>
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Not IsPostBack Then
bind(Request("nid"))
End If
End Sub
Sub bind(ByVal n)
ddl.Items.Clear()
Dim i As Int16
For i = 0 To 5
Dim li As New ListItem(n + CStr(i), i)
ddl.Items.Add(li)
Next
End Sub
1<%@ Page Language="vb" AutoEventWireup="false" Codebehind="treeDrp.aspx.vb" Inherits="Ex.treeDrp"%>
2<%@ Register TagPrefix="iewc" Namespace="Microsoft.Web.UI.WebControls" Assembly="Microsoft.Web.UI.WebControls, Version=1.0.2.226, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>
3<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
4<HTML>
5 <HEAD>
6 <title>treeDrp</title>
7 <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
8 <meta name="CODE_LANGUAGE" content="Visual Basic .NET 7.1">
9 <meta name="vs_defaultClientScript" content="JavaScript">
10 <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
11 <script language="javascript">
12 function setV()
13
{
14 document.all("v").value=TreeView1.getTreeNode(TreeView1.clickedNodeIndex).getAttribute("Text");
15 document.Form1.submit();
16
}
17 </script>
18 </HEAD>
19 <body MS_POSITIONING="GridLayout">
20 <form id="Form1" method="post" runat="server">
21 <input type="hidden" id="v" runat="server"> <FONT face="宋体">
22 <iewc:TreeView id="TreeView1" style="Z-INDEX: 101; LEFT: 16px; POSITION: absolute; TOP: 72px" runat="server">
23 <iewc:TreeNode Text="Node0"></iewc:TreeNode>
24 <iewc:TreeNode Text="Node1"></iewc:TreeNode>
25 <iewc:TreeNode Text="Node2"></iewc:TreeNode>
26 <iewc:TreeNode Text="Node3"></iewc:TreeNode>
27 </iewc:TreeView>
28 <asp:DropDownList id="ddl" style="Z-INDEX: 102; LEFT: 168px; POSITION: absolute; TOP: 72px" runat="server"></asp:DropDownList></FONT>
29 </form>
30 </body>
31</HTML>
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="treeDrp.aspx.vb" Inherits="Ex.treeDrp"%>
2
<%@ Register TagPrefix="iewc" Namespace="Microsoft.Web.UI.WebControls" Assembly="Microsoft.Web.UI.WebControls, Version=1.0.2.226, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>3
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">4
<HTML>5
<HEAD>6
<title>treeDrp</title>7
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">8
<meta name="CODE_LANGUAGE" content="Visual Basic .NET 7.1">9
<meta name="vs_defaultClientScript" content="JavaScript">10
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">11
<script language="javascript">12
function setV()13
{
14
document.all("v").value=TreeView1.getTreeNode(TreeView1.clickedNodeIndex).getAttribute("Text");15
document.Form1.submit();16
}17
</script>18
</HEAD>19
<body MS_POSITIONING="GridLayout">20
<form id="Form1" method="post" runat="server">21
<input type="hidden" id="v" runat="server"> <FONT face="宋体">22
<iewc:TreeView id="TreeView1" style="Z-INDEX: 101; LEFT: 16px; POSITION: absolute; TOP: 72px" runat="server">23
<iewc:TreeNode Text="Node0"></iewc:TreeNode>24
<iewc:TreeNode Text="Node1"></iewc:TreeNode>25
<iewc:TreeNode Text="Node2"></iewc:TreeNode>26
<iewc:TreeNode Text="Node3"></iewc:TreeNode>27
</iewc:TreeView>28
<asp:DropDownList id="ddl" style="Z-INDEX: 102; LEFT: 168px; POSITION: absolute; TOP: 72px" runat="server"></asp:DropDownList></FONT>29
</form>30
</body>31
</HTML>后台.vb代码
1Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
2 TreeView1.Attributes.Add("onclick", "setV();")
3 ' If Not IsPostBack Then
4 bind()
5 Dim index As Int16 = v.Value.Trim().Substring(4)
6 TreeView1.SelectedNodeIndex = index
7 'End If
8 End Sub
9 Sub bind()
10 ddl.Items.Clear()
11 Dim i As Int16
12 For i = 0 To 5
13 Dim li As New ListItem(v.Value.Trim() + CStr(i), i)
14 ddl.Items.Add(li)
15 Next
16 End Sub
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load2
TreeView1.Attributes.Add("onclick", "setV();")3
' If Not IsPostBack Then4
bind()5
Dim index As Int16 = v.Value.Trim().Substring(4)6
TreeView1.SelectedNodeIndex = index7
'End If8
End Sub9
Sub bind()10
ddl.Items.Clear()11
Dim i As Int1612
For i = 0 To 513
Dim li As New ListItem(v.Value.Trim() + CStr(i), i)14
ddl.Items.Add(li)15
Next16
End Sub2.TreeView和DropDownList不在一个页面，分别在2个框架中
框架页
1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN">
2<html>
3 <head>
4 <TITLE>内容框架集</TITLE>
5 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=gb2312">
6 <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
7 <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
8 </head>
9 <frameset cols="150,*">
10 <frame name="contents" src="treedrpLeft.aspx">
11 <frame name="main" src="treeDrpRight.aspx">
12 <noframes>
13 <pre id="p2">
14================================================================
15关于完成此内容框架集的说明
161. 为“contents”框架添加 src="" 页的 URL。
172. 为“main”框架添加 src="" 页的 URL。
183. 将 BASE target="main" 元素添加到“contents”页的
19 HEAD，以将“main”设置为默认框架，“contents”页的链接将
20 在该框架中显示其他页。
21================================================================
22</pre>
23 <p id="p1">
24 此 HTML 框架集显示多个 Web 页。若要查看此框架集，请使用支持 HTML 4.0 及更高版本的 Web 浏览器。
25 </p>
26 </noframes>
27 </frameset>
28</html>
29
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN">2
<html>3
<head>4
<TITLE>内容框架集</TITLE>5
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=gb2312">6
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">7
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">8
</head>9
<frameset cols="150,*">10
<frame name="contents" src="treedrpLeft.aspx">11
<frame name="main" src="treeDrpRight.aspx">12
<noframes>13
<pre id="p2">14
================================================================15
关于完成此内容框架集的说明16
1. 为“contents”框架添加 src="" 页的 URL。17
2. 为“main”框架添加 src="" 页的 URL。18
3. 将 BASE target="main" 元素添加到“contents”页的 19
HEAD，以将“main”设置为默认框架，“contents”页的链接将20
在该框架中显示其他页。21
================================================================22
</pre>23
<p id="p1">24
此 HTML 框架集显示多个 Web 页。若要查看此框架集，请使用支持 HTML 4.0 及更高版本的 Web 浏览器。25
</p>26
</noframes>27
</frameset>28
</html>29
左框架页中 有个TreeView
<body MS_POSITIONING="GridLayout"> <form id="Form1" method="post" runat="server"> <iewc:TreeView id="TreeView1" style="Z-INDEX: 101; LEFT: 8px; POSITION: absolute; TOP: 80px" runat="server"> <iewc:TreeNode Text="Node0" > <iewc:TreeNode Text="Node0"></iewc:TreeNode> </iewc:TreeNode> <iewc:TreeNode Text="Node1"></iewc:TreeNode> <iewc:TreeNode Text="Node2"></iewc:TreeNode> <iewc:TreeNode Text="Node3"></iewc:TreeNode> </iewc:TreeView> </form> </body>Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load If Not IsPostBack Then Dim i As Int16 For i = 0 To TreeView1.Nodes.Count - 1 TreeView1.Nodes(i).NavigateUrl = "treedrpRight.aspx?nid=" + TreeView1.Nodes(i).Text TreeView1.Nodes(i).Target = "main" Next End If End Sub右框架
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="treeDrpRight.aspx.vb" Inherits="Ex.treeDrpRight"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML> <HEAD> <title>treeDrpRight</title> <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1"> <meta name="CODE_LANGUAGE" content="Visual Basic .NET 7.1"> <meta name="vs_defaultClientScript" content="JavaScript"> <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"> </HEAD> <body MS_POSITIONING="GridLayout"> <form id="Form1" method="post" runat="server"> <asp:DropDownList id="ddl" style="Z-INDEX: 101; LEFT: 32px; POSITION: absolute; TOP: 80px" runat="server" Width="136px"></asp:DropDownList> </form> </body></HTML> Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load If Not IsPostBack Then bind(Request("nid")) End If End Sub Sub bind(ByVal n) ddl.Items.Clear() Dim i As Int16 For i = 0 To 5 Dim li As New ListItem(n + CStr(i), i) ddl.Items.Add(li) Next End Sub
