Hi all...
Perhaps I'm not going about this the right way, but I wondered if
anyone can help?
I have a treeview which populates from a datatable using a parent/
child relationship. It stores a company/branch hierarchical structure
and show areas/regions/branches etc by name in it's nodes.
What I need to be able to do is select a node (by clicking on the
branch name etc) and return an integer value for the given hierarchy
point so that I can save data based on this integer value. The reason
I need this integer is because branches etc within the company
hierarchy may be the same, but reside in different trees of the
treeview.
I've noticed there's no Node.Value or anything and wondered if anyone
had had the same problem or if anyone could think of a way around this
problem?
Thanks 4 8108
I'd also like to know how to dynamically set a SelectedNode and keep
it highlighted after the control has lost focus...
On 6 Mar, 12:34, "Karl Rhodes" <googlegro...@t lbsolutions.com wrote:
Hi all...
Perhaps I'm not going about this the right way, but I wondered if
anyone can help?
I have a treeview which populates from a datatable using a parent/
child relationship. It stores a company/branch hierarchical structure
and show areas/regions/branches etc by name in it's nodes.
What I need to be able to do is select a node (by clicking on the
branch name etc) and return an integer value for the given hierarchy
point so that I can save data based on this integer value. The reason
I need this integer is because branches etc within the company
hierarchy may be the same, but reside in different trees of the
treeview.
I've noticed there's no Node.Value or anything and wondered if anyone
had had the same problem or if anyone could think of a way around this
problem?
Thanks
There's nothing to stop you creating your own TreeNode [class] and
adding whatever data fields you want to it, as in
Class CustomNode
Inherits TreeNode
Public Sub New()
MyBase.New()
End Sub
Public Sub New( value as ... )
Me.Value = value
End Sub
Public Property Value() As ...
. . .
End Property
End Class
.... then ...
Dim oTreeNode as New CustomNode( SomeValue )
tree1.Nodes.add (oTreeNode)
Then, when you click on any TreeNode, test its type and, if it's one of
yours, cast it and work with it:
Sub Tree1_AfterSele ct( ... ) Handles tree1.AfterSele ct
If TypeOf e.Node Is CustomNode Then
With DirectCast( e.Node, CustomNode )
DoSomethingWith ( .Value )
End With
Else
End If
End Sub
Setting the SelectedNode is as easy as .. er .. setting the
SelectedNode, as in
tree1.SelectedN ode = oTreeNode
oTreeNode.Ensur eVisible ' make sure we can see the new selection
tree1.HideSelec tion = False ' make sure it /stays/ highlighted
HTH,
Phill W.
Karl Rhodes wrote:
I'd also like to know how to dynamically set a SelectedNode and keep
it highlighted after the control has lost focus...
On 6 Mar, 12:34, "Karl Rhodes" <googlegro...@t lbsolutions.com wrote:
>I have a treeview which populates from a datatable using a parent/ child relationship. It stores a company/branch hierarchical structure and show areas/regions/branches etc by name in it's nodes.
.. . .
>I've noticed there's no Node.Value or anything and wondered if anyone had had the same problem or if anyone could think of a way around this problem?
On 6 Mar, 15:18, "Phill W." <p-.-a-.-w-a-r...@-o-p-e-n-.-a-c-.-u-k>
wrote:
There's nothing to stop you creating your own TreeNode [class] and
adding whatever data fields you want to it, as in
Class CustomNode
Inherits TreeNode
Public Sub New()
MyBase.New()
End Sub
Public Sub New( value as ... )
Me.Value = value
End Sub
Public Property Value() As ...
. . .
End Property
End Class
... then ...
Dim oTreeNode as New CustomNode( SomeValue )
tree1.Nodes.add (oTreeNode)
Then, when you click on any TreeNode, test its type and, if it's one of
yours, cast it and work with it:
Sub Tree1_AfterSele ct( ... ) Handles tree1.AfterSele ct
If TypeOf e.Node Is CustomNode Then
With DirectCast( e.Node, CustomNode )
DoSomethingWith ( .Value )
End With
Else
End If
End Sub
Thanks. I'll have a go at that!
>
Setting the SelectedNode is as easy as .. er .. setting the
SelectedNode, as in
tree1.SelectedN ode = oTreeNode
Oh yeah, silly me! :)
>
oTreeNode.Ensur eVisible ' make sure we can see the new selection
tree1.HideSelec tion = False ' make sure it /stays/ highlighted
HTH,
Phill W.
On Mar 6, 10:54 am, "Karl Rhodes" <googlegro...@t lbsolutions.com >
wrote:
On 6 Mar, 15:18, "Phill W." <p-.-a-.-w-a-r...@-o-p-e-n-.-a-c-.-u-k>
wrote:
There's nothing to stop you creating your own TreeNode [class] and
adding whatever data fields you want to it, as in
Class CustomNode
Inherits TreeNode
Public Sub New()
MyBase.New()
End Sub
Public Sub New( value as ... )
Me.Value = value
End Sub
Public Property Value() As ...
. . .
End Property
End Class
... then ...
Dim oTreeNode as New CustomNode( SomeValue )
tree1.Nodes.add (oTreeNode)
Then, when you click on any TreeNode, test its type and, if it's one of
yours, cast it and work with it:
Sub Tree1_AfterSele ct( ... ) Handles tree1.AfterSele ct
If TypeOf e.Node Is CustomNode Then
With DirectCast( e.Node, CustomNode )
DoSomethingWith ( .Value )
End With
Else
End If
End Sub
Thanks. I'll have a go at that!
Setting the SelectedNode is as easy as .. er .. setting the
SelectedNode, as in
tree1.SelectedN ode = oTreeNode
Oh yeah, silly me! :)
oTreeNode.Ensur eVisible ' make sure we can see the new selection
tree1.HideSelec tion = False ' make sure it /stays/ highlighted
HTH,
Phill W.
You can use the .Tag property of the Treenode Object to store the data
that you want to associate with the node. It accepts any object.
See the msdn documentation linked below for more information http://msdn2.microsoft.com/en-us/lib...enode.tag.aspx This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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