解决原有TreeView 的 CheckBox 被点击时不能引发服务器端事件
实现当TreeView中父节点的CheckBox的点选状态改变时
回发服务器端
触发TreeView1_TreeNodeCheckChanged(object sender, TreeNodeEventArgs e)事件
从而通过代码来控制子节点的CheckBox的点选状态 一同改变
主要步骤及代码示例如下：
1.TreeView绑定onclick事件
通过本事件 引发回发
2.在TreeView1_TreeNodeCheckChanged(object sender, TreeNodeEventArgs e)事件
编写相关代码 控制子节点的CheckBox点选状态
-------------------- HTML 页面部分 -----------------------
1
<html>
2<head runat="server">
3 <title>VS2005 TreeView CheckBox</title>
4
<script type="text/javascript">
5
// 点击复选框时触发事件
6 function postBackByObject()
7
{
8 var o = window.event.srcElement;
9 if (o.tagName == "INPUT" && o.type == "checkbox")
10 {
11 __doPostBack("","");
12
}
13
}
14</script>
15</head>
16<body>
17 <form id="form1" runat="server">
18 <div>
19 <asp:TreeView ID="TreeView1" runat="server" OnTreeNodeCheckChanged="TreeView1_TreeNodeCheckChanged">
20 <SelectedNodeStyle BackColor="SlateGray" />
21 </asp:TreeView>
22 </div>
23 </form>
24</body>
25</html>
<html>2
<head runat="server">3
<title>VS2005 TreeView CheckBox</title>4
<script type="text/javascript">
5
// 点击复选框时触发事件6
function postBackByObject()7
{
8
var o = window.event.srcElement;9
if (o.tagName == "INPUT" && o.type == "checkbox")10
{11
__doPostBack("","");12
} 13
}14
</script> 15
</head>16
<body>17
<form id="form1" runat="server">18
<div>19
<asp:TreeView ID="TreeView1" runat="server" OnTreeNodeCheckChanged="TreeView1_TreeNodeCheckChanged">20
<SelectedNodeStyle BackColor="SlateGray" /> 21
</asp:TreeView> 22
</div>23
</form>24
</body>25
</html>
--------------------- cs页面代码 --------------------
1protected void Page_Load(object sender, EventArgs e)
2 {
3 if (!IsPostBack)
4 {
5 //构建TreeView
6 TreeNode Node00 = new TreeNode("00", "00");
7
8 TreeNode Node01 = new TreeNode("01", "01");
9 TreeNode Node0101 = new TreeNode("0101", "0101");
10 TreeNode Node0102 = new TreeNode("0102", "0102");
11 TreeNode Node02 = new TreeNode("02", "02");
12
13 Node01.ChildNodes.Add(Node0101);
14 Node01.ChildNodes.Add(Node0102);
15
16 Node00.ChildNodes.Add(Node01);
17 Node00.ChildNodes.Add(Node02);
18
19 TreeView1.Nodes.Add(Node00);
20
21 TreeView1.ShowCheckBoxes = TreeNodeTypes.All;//显示CheckBox
22
23 TreeView1.ExpandDepth = 0;
24
25 }
26 //绑定事件
27 TreeView1.Attributes.Add("onclick", "postBackByObject()");
28
29 }
30
31 //
32 protected void TreeView1_TreeNodeCheckChanged(object sender, TreeNodeEventArgs e)
33 {
34 SetChildChecked(e.Node);
35 }
36
37 //
38 private void SetChildChecked(TreeNode parentNode)
39 {
40 foreach (TreeNode node in parentNode.ChildNodes)
41 {
42 node.Checked = parentNode.Checked;
43
44 if (node.ChildNodes.Count > 0)
45 {
46 SetChildChecked(node);
47 }
48 }
49 }
50
51
protected void Page_Load(object sender, EventArgs e)2
{3
if (!IsPostBack)4
{5
//构建TreeView6
TreeNode Node00 = new TreeNode("00", "00");7
8
TreeNode Node01 = new TreeNode("01", "01");9
TreeNode Node0101 = new TreeNode("0101", "0101");10
TreeNode Node0102 = new TreeNode("0102", "0102");11
TreeNode Node02 = new TreeNode("02", "02");12
13
Node01.ChildNodes.Add(Node0101);14
Node01.ChildNodes.Add(Node0102);15
16
Node00.ChildNodes.Add(Node01);17
Node00.ChildNodes.Add(Node02);18
19
TreeView1.Nodes.Add(Node00);20
21
TreeView1.ShowCheckBoxes = TreeNodeTypes.All;//显示CheckBox22
23
TreeView1.ExpandDepth = 0;24
25
}26
//绑定事件27
TreeView1.Attributes.Add("onclick", "postBackByObject()");28
29
}30
31
//32
protected void TreeView1_TreeNodeCheckChanged(object sender, TreeNodeEventArgs e)33
{34
SetChildChecked(e.Node);35
}36
37
//38
private void SetChildChecked(TreeNode parentNode)39
{40
foreach (TreeNode node in parentNode.ChildNodes)41
{42
node.Checked = parentNode.Checked;43
44
if (node.ChildNodes.Count > 0)45
{46
SetChildChecked(node);47
}48
}49
}50
51
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