Programitically Adding items to TreeView

[=?Utf-8?B?QnJhZA==?=]

VS,VB 2005

I have a treeview which i load data into in the forms load event
Adding Nodes and Children to the parent nodes works fine

to add a parent:
Me.tvGroups.Nod es.Add(GroupDat aRow(0)("MenuGr oupID").ToStrin g,
GroupDataRow(0) ("GroupLabel "))

to add a child to a Parent:
ParentIndex =
Me.tvGroups.Nod es.IndexOfKey(G roupDataRow(0)( "ParentGroupID" ).ToString)
NodeRef = Me.tvGroups.Nod es(ParentIndex)
NodeRef.Nodes.A dd(GroupDataRow (0)("MenuGroupI D").ToString ,
GroupDataRow(0) ("GroupLabel "))

all works good... but now im trying to add a child to a child and i am
unable to get the parent index by key the same way as above. this code fails
when its a child key im looking for:

ParentIndex =
Me.tvGroups.Nod es.IndexOfKey(G roupDataRow(0)( "ParentGroupID" ).ToString)

suggestions???

[=?Utf-8?B?QnJhZA==?=]

RE: Programitically Adding items to TreeView


also, if i insert a new node, child, grandchild, etc... how do i make the
inserted node the selected node?

[G Himangi]

Re: Programitically Adding items to TreeView

To select the node, set its Selected property (from .Net 2.0 onwards) to
true.

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"Brad" <Brad@discussio ns.microsoft.co mwrote in message
news:7ABB8994-2C25-4CDD-A810-D5F930513E5A@mi crosoft.com...

>
also, if i insert a new node, child, grandchild, etc... how do i make the
inserted node the selected node?

[=?Utf-8?B?QnJhZA==?=]

Re: Programitically Adding items to TreeView

useing .net 2

first, i can find no Selected Property, what is it under?

second, back to my first problem...

if i am looking for the index to a node that is a granchild, using
IndexOfKey returns a -1, it cant find the granchild. How do i find the Index?

if i have an Index, how do i set the node to selected?




"G Himangi" wrote:

To select the node, set its Selected property (from .Net 2.0 onwards) to
true.

[=?Utf-8?B?QnJhZA==?=]

Re: Programitically Adding items to TreeView

solving my first problem gives me the solution for the rest of them

this code is not my origional creation....

i created 2 functions that when passed a Key Value (Nodes.Name) it will
return the Node i referenced and the rest is simple

this allows me to find a node that is a parent, child, grandchild, great
grandchild, etc... by passing the key (or Name) associated with it...

Public Function FindNodeByNodeN ame(ByVal NodeName As String) As TreeNode
Return SelectNode(Me.t vGroups.Nodes, NodeName)
End Function

Private Function SelectNode(ByVa l Nodes As TreeNodeCollect ion, ByVal
NodeName As String) As TreeNode
Dim foundNode As TreeNode = Nothing
Dim i As Integer = 0

Do Until Not foundNode Is Nothing OrElse i = Nodes.Count
If DirectCast(Node s(i), TreeNode).Name = NodeName Then
foundNode = DirectCast(Node s(i), TreeNode)
Else
If Nodes(i).Nodes. Count 0 Then
foundNode = SelectNode(Node s(i).Nodes, NodeName)
End If

i += 1
End If
Loop
Return foundNode
End Function

[=?Utf-8?B?QnJhZA==?=]

Re: Programitically Adding items to TreeView

..Selected???

this works...

Me.tvName.Selec tedNode = Me.tvName.Nodes (NodeIndexToSel ect)

[=?Utf-8?B?QnJhZA==?=]

Re: Programitically Adding items to TreeView

while were at it, to locate a child, grandchild, etc.. to add another node
to...

could be spead up by useing tvname.nodes.fi nd(KeyText,True ) to see if you
should even bother going down the tree any further