[Solved] set tree view selectedvalue

[appdev]

Dim rs As SqlDataReader = something
Dim dt As New DataTable
 dt.Load(rs)
RadTreeView1.DataSource = dt
RadTreeView1.DataTextField = dt.Columns("descriptions").ToString
RadTreeView1.DataValueField = dt.Columns("sections").ToString
RadTreeView1.DataBind()

RadTreeView1.SelectedNode.Value = "somthing" always tells me that object reference is nothing can you tell me why or how do i set it to select the first value in the tree view. also if the first node in treeview is expandable, how do i expand it and then select the first child node in that parent node. thank you

RadTreeView1.SelectedNode.Value = "somthing" always tells me that object reference is nothing can you tell me why or how do i set it to select  the first value in the tree view. also if the first node in treeview is expandable, how do i expand it and then select the first child node in that parent node. thank you

[Schlurk]

The basic way to select the first node would be the following:

RadTreeView1.Nodes(0).Selected = True

Since your approach is trying to access the SelectedNode and set it's value to "something". Since you haven't selected a node you are receiving this error.

As for selecting the first child item of the root node you can do this:

If RadTreeView1.Nodes(0).Nodes.Count > 0 Then
    RadTreeView1.Nodes(0).Expanded = True
    RadTreeView1.Nodes(0).Nodes(0).Selected = True
End If