Question Dynamic treeview node breaks xml.writer

[shawnplr]

After adding a node dynamically to my treeview I can no longer write xml. The code I use to add the node is;

Public Sub addVideo()
        Dim openFileDialog1 As New OpenFileDialog
        openFileDialog1.Filter = "Vidoe Files |*.avi;*.asf;*.mov;*.mp4;*.3gpp;*.mpg;*.mpeg;*.flv;*.swf;*.wmv;*.dv;*.ogg;*.mkv;*.rm;*.vob"
        openFileDialog1.Title = "Select an input file."
        If openFileDialog1.ShowDialog() = Windows.Forms.DialogResult.OK Then
            Dim node As TreeNode() = frmProject.TreeView1.Nodes.Find("Video", True)
            frmProject.TreeView1.SelectedNode = node(0)
            With node(0).Nodes.Add(openFileDialog1.FileName)
                .Text = openFileDialog1.SafeFileName
                .Name = openFileDialog1.FileName
                .Tag = "video"
                .ImageIndex = 1
                .SelectedImageIndex = 1
            End With
            openFileDialog1.Dispose()
            node(0).Expand()
        End If
    End Sub

Before adding the node xml works fine. Afterward I can not write xml from any form in any manner. Completely baffled.

 

[shawnplr]

Turns out that updating the code from 2.0 to 3.5 causes some using elements not to be called. Updated the entire project manually, problem fixed.