treeview node values [RESOLVED]

[carlblanchard]

Hey All

Can the treeview control display a friendly name to the user and store a id as a value. ?

I mean i have list of customers to user i want to display the customers name and to the application when a user selects a customer i wish to pass the customers id to what ever code ive wrote ?

[RealisticGraphics]

Unless I'm mistaken (but I don't believe so) Microsoft removed our beloved "Key" property. But for what you are wanting, I think you could use the "Tag" property off the node object.

When the user clicks a node, just pass the Tag property along.

[VBCrazyCoder]

That's exactly what I do - use the tag property.

[carlblanchard]

have you got any good clean code examples of this ?

[carlblanchard]

Ive got a private variable to the form

Private CustomerNode As New TreeNode

and in my onload event i have

CustomerNode.Text = strTitle
CustomerNode.Tag = currentRow("customerid")

TreeView1.Nodes.Add(CustomerNode)

this is contained within a loop of a dataset

For Each currentRow In mCustomerDs.Tables(0).Rows

next

In my data i will have customers with the same name but im getting this error

can not add or insert the item "MY CUSOTMERS NAME" in more than one place. you must first remove it from its current location or clone it; Parameter name Node ????

any ideas

[pax]

Hi.

You just need to set the variable to a new instance of a treenode before adding it.

CustomerNode=New TreeNode
CustomerNode.Text = strTitle
CustomerNode.Tag = currentRow("customerid")

TreeView1.Nodes.Add(CustomerNode)

[carlblanchard]

nice one pax i managed to work that out last night

however i seem to be getting duplicate entries for each node

it gets to the 3 or 4th one in the tree and then starts duplicating
im using the clear method but dosnt seem to do much

its as soon as the first db entry is null it does it

any ideas

[pax]

hmmm...not to sure. Never actually tried that before but it sounds like there might be some thing going on with the loop it self.

I assume there's a While...End While or something of that nature.
Could it be that it skips a MoveNext for the recordset/dataset thus adding the same node twice?