با سلام
این کار در جاوا اسکریپت به راحتی صورت میگیرد (راههای بهتری هم هست با استفاده از جی کوئری ولی این هم جواب میده )
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
TreeViewDemo.Attributes.Add("onclick", "OnTreeClick(event)");
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
<script language="javascript" type="text/javascript">
//************************** Treeview Parent-Child check behaviour ****************************//
function OnTreeClick(evt)
{
var src = window.event != window.undefined ? window.event.srcElement : evt.target;
var isChkBoxClick = (src.tagName.toLowerCase() == "input" && src.type == "checkbox");
if(isChkBoxClick)
{
var parentTable = GetParentByTagName("table", src);
var nxtSibling = parentTable.nextSibling;
if(nxtSibling && nxtSibling.nodeType == 1)//check if nxt sibling is not null & is an element node
{
if(nxtSibling.tagName.toLowerCase() == "div") //if node has children
{
//check or uncheck children at all levels
CheckUncheckChildren(parentTable.nextSibling, src.checked);
}
}
//check or uncheck parents at all levels
CheckUncheckParents(src, src.checked);
}
}
function CheckUncheckChildren(childContainer, check)
{
var childChkBoxes = childContainer.getElementsByTagName("input");
var childChkBoxCount = childChkBoxes.length;
for(var i = 0; i<childChkBoxCount; i++)
{
childChkBoxes[i].checked = check;
}
}
function CheckUncheckParents(srcChild, check)
{
var parentDiv = GetParentByTagName("div", srcChild);
var parentNodeTable = parentDiv.previousSibling;
if(parentNodeTable)
{
var checkUncheckSwitch;
if(check) //checkbox checked
{
var isAllSiblingsChecked = AreAllSiblingsChecked(srcChild);
if(isAllSiblingsChecked)
checkUncheckSwitch = true;
else
return; //do not need to check parent if any child is not checked
}
else //checkbox unchecked
{
checkUncheckSwitch = false;
}
var inpElemsInParentTable = parentNodeTable.getElementsByTagName("input");
if(inpElemsInParentTable.length > 0)
{
var parentNodeChkBox = inpElemsInParentTable[0];
parentNodeChkBox.checked = checkUncheckSwitch;
//do the same recursively
CheckUncheckParents(parentNodeChkBox, checkUncheckSwitch);
}
}
}
function AreAllSiblingsChecked(chkBox)
{
var parentDiv = GetParentByTagName("div", chkBox);
var childCount = parentDiv.childNodes.length;
for(var i=0; i<childCount; i++)
{
if(parentDiv.childNodes[i].nodeType == 1) //check if the child node is an element node
{
if(parentDiv.childNodes[i].tagName.toLowerCase() =="table")
{
var prevChkBox = parentDiv.childNodes[i].getElementsByTagName("input")[0];
//if any of sibling nodes are not checked, return false
if(!prevChkBox.checked)
{
return false;
}
}
}
}
return true;
}
//utility function to get the container of an element by tagname
function GetParentByTagName(parentTagName, childElementObj)
{
var parent = childElementObj.parentNode;
while(parent.tagName.toLowerCase() != parentTagName.toLowerCase())
{
parent = parent.parentNode;
}
return parent;
}
head>
<body>
<form id="form1" runat="server">
<div>
<asp:TreeView ID="TreeViewDemo" runat="server" ExpandDepth="0" ShowCheckBoxes="All">
<Nodes>
<asp:TreeNode NavigateUrl="http://www.asp.net" Text="A" Value="A">
<asp:TreeNode NavigateUrl="" Text="A1" Value="A1">
<asp:TreeNode NavigateUrl="http://www.asp.net" Text="A11" Value="A11"></asp:TreeNode>
<asp:TreeNode NavigateUrl="http://www.asp.net" Text="A12" Value="A12"></asp:TreeNode>
</asp:TreeNode>
<asp:TreeNode NavigateUrl="http://www.asp.net" Text="A2" Value="A2">
<asp:TreeNode NavigateUrl="http://www.asp.net" Text="A21" Value="A21"></asp:TreeNode>
<asp:TreeNode NavigateUrl="http://www.asp.net" Text="A22" Value="A22"></asp:TreeNode>
</asp:TreeNode>
</asp:TreeNode>
</Nodes>
</asp:TreeView>
</div>
</form>
</body>
</html>