Expanding a specific TreeNode on a TreeView control - ng.asp-net-forum.internet_explorer_web_controls

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10/10/2003 10:41:35 PM

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	hibbsa
	Asp.Net User

Expanding a specific TreeNode on a TreeView control

10/10/2003 10:41:35 PM

0/0

Hi,
I've been trying to programmatically expand a TreeView control to a specific node at runtime. I'm getting into a muddle and was wondering if anyone could tell me if there is actually a simple way to do this. Any help would be much appreciated!!!
Regards,
Al

	DotNetShah
	Asp.Net User

Re: Expanding a specific TreeNode on a TreeView control

10/15/2003 12:48:31 PM

0/0

Hi Al,
Yes, there is a simple way. I hope that the following peace of code will answer your question.

protected TreeView catTree = new TreeView();





		private void Page_Load(object sender, System.EventArgs e){





			if( !IsPostBack){


				TreeNode _oTreeNode = new TreeNode();


				_oTreeNode.Text = "Root";


				_oTreeNode.NodeData = "0";


				_oTreeNode.Expandable = ExpandableValue.Always;


					


				catTree.Nodes.Add( _oTreeNode);


				catTree.DataBind();


			}


		}





		protected void OnNodeExpanded( object sender, TreeViewClickEventArgs e){


			TreeView _oTree = sender as TreeView;


			if( null != _oTree){


				string _sFullPath = e.Node;


				TreeNode _oTreeNode = _oTree.GetNodeFromIndex( _sFullPath);


				if( null != _oTreeNode){


					if( null == _oTreeNode.Nodes || _oTreeNode.Nodes.Count == 0){


						CCategory[] _oChildCategories = CCategory.GetChildren( int.Parse( _oTreeNode.NodeData));


						foreach( CCategory _oChild in _oChildCategories){


							TreeNode _oNewTreeNode	= new TreeNode();


							_oNewTreeNode.Text		= _oChild.Name;


							_oNewTreeNode.NodeData	= _oChild.CategoryID.ToString();


							_oNewTreeNode.Expandable = ExpandableValue.Always;


							_oTreeNode.Nodes.Add( _oNewTreeNode);


						}


					}


				}


			}


			


		}

2 Items, 1 Pages 1 |< << Go >> >|

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