Find TreeNode.Text in Treeview

[byoung]

Anyone know of a quick to find a value in a Treeview by index or going directly to the text value?

 

I know you can use recursive methods and loop through TreeNode collections, etc.

 

Some code examples would be very much appreciated...

 

Thanks!

 

Barry

[divil]

You can't. The only way you could do this is by keeping a hashtable object around to associate text values with treenode objects as you add them. If this would be useful to you, I suggest looking up the Hashtable class in the help.

[bacchus]

Well, actually you can do this. I hope this might help...

 

'assuming treeView1 control has been added to form

'Sample XML
<TREENODES><treenode text="Text to be displayed on page" NodeData="hidden data value associated to displayed text"></treenode></TREENODES>


'Load XML into treeView control static or dynamic

'Static
treeView1.TreeNodeSrc = "TreeViewControl.xml"

'Dynamic
Dim sMyXML as String
Dim myXMLDocument as XmlDocument

'Build your XML string however you need to
sMyXML = "<TREENODES><treenode text=""Text to be displayed on page"" NodeData=""hidden data value associated to displayed text""></treenode></TREENODES>"

myXMLDocument.LoadXML(sMyXML)
treeView1.TreeNodeSrc = myDomDocument.InnerXML
treeView1.DataBind()


'Code for treeView1_SelectedIndexChange
'AutoPostBack property must be set to true for this event to fire on each node select, otherwise the events are queued

dim tnSelectedNode as TreeNode

tnSelectedNode = treeView1.GetNodeFromIndex(treeView1.SelectedNodeIndex)

Response.write("Selected node display text:  " & tnSelectedNode.Text & "<br>")
Response.write("Selected node hidden value:  " & tnSelectedNode.NodeData & "<br>")

 

That should do it