TreeView1_SelectedBeingAPain()

[dscreation]

I am using a series of 8 TreeViews. If the root of the first one is in a selected state, I can still click any of the other node in another TreeView and it will remain selected. I have tried...

Protected Sub TreeView1_SelectedNodeChanged(ByVal sender////////////
if TreeView2.SelectedNode.Value = "yada" Then
blah
blah
blah
TreeView1.SelectedNode.Selected = False

but I get a NullReferenceExecption

Does anyone know how I can deselect all nodes in every TreeView ?

[SammyB]

TreeView1.SelectedNode = Nothing

[dscreation]

I tried that and I get the error "Property 'SelectedNode' is 'ReadOnly'

[SammyB]

I tried that and I get the error "Property 'SelectedNode' is 'ReadOnly'

Works for me. Put one tree view & one button on a new form. Add some nodes to the tree. Double-click the button & add code:

Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Me.TreeView1.SelectedNode = Nothing
    End Sub
End Class
 

Are you using VB.NET 2005?

[dscreation]

Works for me. Put one tree view & one button on a new form. Add some nodes to the tree. Double-click the button & add code:

Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Me.TreeView1.SelectedNode = Nothing
    End Sub
End Class
 

Are you using VB.NET 2005?

yeah but I am getting a null reference exception, am not exactly sure why.
basically if no nodes are selected, when I do a SelectedNode.Selected = Nothing or False I get the error, obviously because there were no other nodes selected. I have tried an else if but that didn't work. The node being called to deselect need to be selected first.
But I have tried to check its state first but even still, as soon as it looks to see if it is true....WHAM

[dscreation]

okay, I figured out that I needed to return the statement to terminate execution of the method. Yes I am a newb, but heyit works.

conlusion, don't forget to return the method to keep away from a null reference.