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TreeView 用法（有代码）（asp.net）

2011-07-15 00:00 627 查看

前台代码

<script type="text/javascript"> 
//客户端捕捉事件 
function CheckEvent() { 
var objNode = event.srcElement; 
if (objNode.tagName == "INPUT" && objNode.type == "checkbox") { 
var objParentDiv = objNode.id.replace("CheckBox", "Nodes"); 
if (objNode.checked == true) { 
setChildCheckState(objParentDiv, true); 
setParentCheckeState(objNode, true); 
} 
else { 
setChildCheckState(objParentDiv, false); 
if (!HasOtherChecked(objNode)) { 
setParentCheckeState(objNode, false); 
} 
} 
} 
} 
//判断是否有并行的其他节点被选中 
function HasOtherChecked(objNode) { 
var objParentDiv = WebForm_GetParentByTagName(objNode, "div"); 
var chks = objParentDiv.getElementsByTagName("INPUT"); 
for (var i = 0; i < chks.length; i++) { 
if (chks[i].checked && chks[i].id != objNode.id) { 
return true; 
} 
} 
return false; 
} 
//设置父节点 
function setParentCheckeState(objNode, chkstate) { 
try { 
var objParentDiv = WebForm_GetParentByTagName(objNode, "div"); 
if (objParentDiv == null || objParentDiv == "undefined ") { 
return; 
} 
else { 
var objParentChkId = objParentDiv.id.replace("Nodes", "CheckBox"); 
var objParentCheckBox = document.getElementById(objParentChkId); 
if (objParentCheckBox) { 
objParentCheckBox.checked = chkstate; 
setParentCheckeState(objParentDiv, chkstate); 
} 
} 
} 
catch (e) { } 
} 
//设置子节点 
function setChildCheckState(nodeid, chkstate) { 
var node = document.getElementById(nodeid); 
if (node) { 
var chks = node.getElementsByTagName("INPUT"); 
for (var i = 0; i < chks.length; i++) { 
chks[i].checked = chkstate; 
} 
} 
} 
</script> 
<body> 
<form id="form1" runat="server"> 
<asp:TreeView ID="TreeView1" runat="server" ShowCheckBoxes="All" onclick="CheckEvent()"> 
</asp:TreeView> 
</form> 
</body>

后台代码：

private void BindGrid() 
{ 
DataTable mytable = menuTableBll.GetAllList().Tables[0]; //获取数据 
CreateTree(mytable, TreeView1.Nodes, "0"); 
} 
private void CreateTree(DataTable dtNodeSets, TreeNodeCollection node, string parent_id) 
{ 
DataView dvList = new DataView(dtNodeSets); 
dvList.RowFilter = "MeunParentId =" + parent_id; 
TreeNode nodeTemp; 
foreach (DataRowView dv in dvList) 
{ 
nodeTemp = new TreeNode(); 
nodeTemp.Text = dv["MenuName"].ToString(); 
nodeTemp.Expanded = true; 
nodeTemp.ToolTip = dv["MeunId"].ToString(); 
node.Add(nodeTemp); 
CreateTree(dtNodeSets, nodeTemp.ChildNodes, dv["MeunId"].ToString()); 
} 
}

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