VS2005 TreeView 的 CheckBox 被点击时的引发页面回发事件
本文参照于:
VS2005 TreeView的checkBox的父子节点级联状态
非常感谢原作者
--------
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 -----------------------
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<html>
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<head runat="server">
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<title>VS2005 TreeView CheckBox</title>
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<script type="text/javascript">
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// 点击复选框时触发事件
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function postBackByObject()
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{
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var o = window.event.srcElement;
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if (o.tagName == "INPUT" && o.type == "checkbox")
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{
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__doPostBack("","");
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}
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}
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</script>
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</head>
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<body>
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<form id="form1" runat="server">
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<div>
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<asp:TreeView ID="TreeView1" runat="server" OnTreeNodeCheckChanged="TreeView1_TreeNodeCheckChanged">
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<SelectedNodeStyle BackColor="SlateGray" />
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</asp:TreeView>
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</div>
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</form>
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</body>
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</html>
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--------------------- cs页面代码 --------------------
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protected void Page_Load(object sender, EventArgs e)
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{
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if (!IsPostBack)
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{
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//构建TreeView
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TreeNode Node00 = new TreeNode("00", "00");
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TreeNode Node01 = new TreeNode("01", "01");
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TreeNode Node0101 = new TreeNode("0101", "0101");
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TreeNode Node0102 = new TreeNode("0102", "0102");
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TreeNode Node02 = new TreeNode("02", "02");
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Node01.ChildNodes.Add(Node0101);
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Node01.ChildNodes.Add(Node0102);
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Node00.ChildNodes.Add(Node01);
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Node00.ChildNodes.Add(Node02);
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TreeView1.Nodes.Add(Node00);
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TreeView1.ShowCheckBoxes = TreeNodeTypes.All;//显示CheckBox
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TreeView1.ExpandDepth = 0;
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}
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//绑定事件
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TreeView1.Attributes.Add("onclick", "postBackByObject()");
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}
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//
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protected void TreeView1_TreeNodeCheckChanged(object sender, TreeNodeEventArgs e)
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{
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SetChildChecked(e.Node);
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}
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//
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private void SetChildChecked(TreeNode parentNode)
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{
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foreach (TreeNode node in parentNode.ChildNodes)
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{
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node.Checked = parentNode.Checked;
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if (node.ChildNodes.Count > 0)
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{
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SetChildChecked(node);
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}
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}
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}
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posted on 2007-01-05 14:38 freeliver54 阅读(5500) 评论(14) 编辑 收藏 举报