TreeView 动态绑定数据及在当前节点操作

protected void Page_Load(object sender, EventArgs e) {if (!IsPostBack) {this.tvwList.Nodes.Clear();//绑定之前清除所有treeview里的节点数据 bindTree(this.tvwList.Nodes, "0");//调用绑定treeview节点方法 } }///<summary>/// 修改当前节点///</summary>///<param name="sender"></param>///<param name="e"></param> protected void btnModify_Click(object sender, EventArgs e) {if (!string.IsNullOrEmpty(this.txtUpdate.Text)) { ProductTypeSearchModel product = new ProductTypeSearchModel(); product.TypeName=this.txtUpdate.Text; product.TypeId = Convert.ToInt32(this.tvwList.SelectedNode.Value);if (ProductTypeSearchBLL.ModifyProductTypeSearch(product) > 0) { Response.Write("<script>alert('节点名称修改成功');window.location.href=window.location.href</script>"); }else { Response.Write("<script>alert('节点名称修改失败')</script>"); } }else { Response.Write("<script>alert('节点名称不能为空')</script>"); } }///<summary>/// 新增节点///</summary>///<param name="sender"></param>///<param name="e"></param> protected void btnAdd_Click(object sender, EventArgs e) {if (!string.IsNullOrEmpty(this.txtAdd.Text)) { ProductTypeSearchModel product = new ProductTypeSearchModel(); product.TypeName = this.txtAdd.Text; product.TypeParentId = Convert.ToInt32(this.tvwList.SelectedNode.Value);if (ProductTypeSearchBLL.AddProductTypeSearch(product) > 0) { Response.Write("<script>alert('节点名称新增成功');window.location.href=window.location.href</script>"); }else { Response.Write("<script>alert('节点名称新增失败')</script>"); } }else { Response.Write("<script>alert('节点名称不能为空')</script>"); } }///<summary>/// 选择节点变化时///</summary>///<param name="sender"></param>///<param name="e"></param> protected void tvwList_SelectedNodeChanged(object sender, EventArgs e) {this.lblNow.Text = "当前选定节点为：" + this.tvwList.SelectedNode.Text;this.txtUpdate.Text = this.tvwList.SelectedNode.Text; }///<summary>/// 绑定treeview///</summary>///<param name="tnc">treeview的nodes</param>///<param name="parentId">父ID</param> protected void bindTree(TreeNodeCollection tnc, string parentId) {//创建DataView DataView dview = new DataView(); dview.Table = ProductTypeSearchBLL.GetProductTypeSearch();//加条件 dview.RowFilter = "TypeParentId='" + parentId + "'";foreach (DataRowView rows in dview) { TreeNode tn = new TreeNode(); tn.Value = rows["TypeId"].ToString(); tn.Text = rows["TypeName"].ToString();//如果实现点击节点文字展开收缩效果的话下面这句代码//tn.SelectAction = TreeNodeSelectAction.Expand; tnc.Add(tn);//TreeView1.Nodes.Add(tn); DataView dv = new DataView(); dv.Table = ProductTypeSearchBLL.GetProductTypeSearch();//判断是不是存在drv["flbh"]的ChildNodes，存在的话添加，不存在就继续遍历 dv.RowFilter = "TypeParentId='" + rows["TypeId"].ToString() + "'";if (dv.Count != 0) { bindTree(tn.ChildNodes, tn.Value); } } }///<summary>/// 删除节点///</summary>///<param name="sender"></param>///<param name="e"></param> protected void btnDel_Click(object sender, EventArgs e) {int typeId = Convert.ToInt32(this.tvwList.SelectedNode.Value);if (ProductTypeSearchBLL.DelProductTypeSearch(typeId) > 0) { Response.Write("<script>alert('节点名称删除成功');window.location.href=window.location.href</script>"); }else { Response.Write("<script>alert('节点名称删除失败')</script>"); } }

 

转载于:https://www.cnblogs.com/Kiss920Zz/archive/2011/11/25/2263374.html

相关资源：动态从数据库中绑定TreeView节点