Check/uncheck the checkbox on clicking the tree node text
17 Feb 202214 minutes to read
You can check and uncheck the checkboxes of tree view by clicking the tree node using the nodeClicked event of TreeView.
<ejs-treeview id="treedata" showCheckBox="true" nodeClicked="nodeCheck" keyPress="nodeCheck">
<e-treeview-fields dataSource="ViewBag.dataSource" id="id" parentId="pid" text="name" hasChildren="hasChild" expanded="expanded" selected="is_selected"></e-treeview-fields>
</ejs-treeview>
<script>
function nodeCheck(args){
var checkedNode = [args.node];
var treeObj = document.getElementById('treedata').ej2_instances[0];
if (args.event.target.classList.contains('e-fullrow') || args.event.key == "Enter") {
var getNodeDetails = treeObj.getNode(args.node);
if (getNodeDetails.isChecked == 'true') {
treeObj.uncheckAll(checkedNode);
} else {
treeObj.checkAll(checkedNode);
}
}
}
</script>public IActionResult CheckBox()
{
List<object> treedata = new List<object>();
treedata.Add(new
{
id = 1,
name = "Australia",
hasChild = true,
expanded = true
});
treedata.Add(new
{
id = 2,
pid = 1,
name = "New South Wales",
});
treedata.Add(new
{
id = 3,
pid = 1,
name = "Victoria"
});
treedata.Add(new
{
id = 4,
pid = 1,
name = "South Australia"
});
treedata.Add(new
{
id = 6,
pid = 1,
name = "Western Australia",
});
treedata.Add(new
{
id = 7,
name = "Brazil",
hasChild = true
});
treedata.Add(new
{
id = 8,
pid = 7,
name = "Paraná"
});
treedata.Add(new
{
id = 9,
pid = 7,
name = "Ceará"
});
treedata.Add(new
{
id = 10,
pid = 7,
name = "Acre"
});
treedata.Add(new
{
id = 11,
name = "China",
hasChild = true
});
treedata.Add(new
{
id = 12,
pid = 11,
name = "Guangzhou"
});
treedata.Add(new
{
id = 13,
pid = 11,
name = "Shanghai"
});
treedata.Add(new
{
id = 14,
pid = 11,
name = "Beijing"
});
treedata.Add(new
{
id = 15,
pid = 11,
name = "Shantou"
});
treedata.Add(new
{
id = 16,
name = "France",
hasChild = true
});
treedata.Add(new
{
id = 17,
pid = 16,
name = "Pays de la Loire"
});
treedata.Add(new
{
id = 18,
pid = 16,
name = "Aquitaine"
});
treedata.Add(new
{
id = 19,
pid = 16,
name = "Brittany"
});
treedata.Add(new
{
id = 20,
pid = 16,
name = "Lorraine"
});
treedata.Add(new
{
id = 21,
name = "India",
hasChild = true
});
treedata.Add(new
{
id = 22,
pid = 21,
name = "Assam"
});
treedata.Add(new
{
id = 23,
pid = 21,
name = "Bihar"
});
treedata.Add(new
{
id = 24,
pid = 21,
name = "Tamil Nadu"
});
ViewBag.dataSource = treedata;
return View();
}Output be like the below.
