TreeView usage (with code) (asp.net)_javascript skills

Frontend code

Copy code The code is as follows: //Client capture event 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); } } } } //Determine whether other parallel nodes are selected function HasOtherChecked(objNode) { var objParentDiv = WebForm_GetParentByTagName(objNode, "div" ); var chks = objParentDiv.getElementsByTagName("INPUT"); for (var i = 0; i if (chks[i].checked && chks [i].id != objNode.id) { return true; } } return false; } //Set the parent node 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) { } } //Set Child node function setChildCheckState(nodeid, chkstate) { var node = document.getElementById(nodeid); if (node) { var chks = node.getElementsByTagName("INPUT"); for (var i = 0; i chks[i].checked = chkstate; } } } Backend code: Copy code The code is as follows: private void BindGrid() { DataTable mytable = menuTableBll .GetAllList().Tables[0]; //Get data 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()); } }