Treeview After Select error

[phpman]

Things were going good, but now it seems when the treeview loads I get an error

System.NullReferenceException: Object reference not set to an instance of an object.
   at AppWindow.Form1.tvFolders_AfterSelect(Object sender, TreeViewEventArgs e)
   at System.Windows.Forms.TreeView.TvnSelected(NMTREEVIEW* nmtv)
   at System.Windows.Forms.TreeView.WmNotify(Message& m)
   at System.Windows.Forms.TreeView.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Here is the function

Private Sub tvFolders_AfterSelect(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles tvFolders.AfterSelect
      
        curNode = e.Node       
        Dim root1 As Boolean = False
       
        Try
           
            If curNode.Text = "Jackson County" Then      
               
                root1 = True
               
            ElseIf curNode.Text = "Personal" Then
               
                MnuFDelete.Enabled = False
                lvFiles.Items.Clear()
                Exit Sub
               
            Else
                curNode.Tag = appPath & curNode.Text & "\"
            End If

            If curNode.Tag.ToString.Length < 1 Then
                MsgBox("appPath empty")
            End If
            If curNode.Level = 0 Then
                curNode.ImageIndex = 2
                curNode.SelectedImageIndex = 2
            Else
                curNode.ImageIndex = 0
                curNode.SelectedImageIndex = 1
            End If
           

            If Not curNode.Text = "Personal" Then
                ' Find all the files in the currentlty selected directory
                objFS.ListFoldersFiles(curNode.Tag, lvFiles, ImageList2)
            End If

            If My.Settings.Favorites.Contains(curNode.Text) Then
                MnuFDelete.Enabled = True 
               
                If lvFiles.Items.Count < 1 Then
                    lvFiles.Items.Clear()

                End If
            Else
                MnuFDelete.Enabled = False
            End If
            lvFiles.Sort()
            lvFiles.Columns(0).AutoResize(ColumnHeaderAutoResizeStyle.ColumnContent)
            lvFiles.Columns(2).AutoResize(ColumnHeaderAutoResizeStyle.ColumnContent)

        Catch ex As Exception
            Debug.WriteLine(ex.Message)
            MsgBox("Select Failed" & Chr(13) & Chr(13) & ex.Message, vbOKOnly, "Failed To Select")
        End Try
    End Sub

I cannot get the error in debug mode.

[.paul.]

put a Stop line before curNode = e.Node + run + step through the code + check your objects + variables

[phpman]

Thanks paul,

But Jackson County is hard coded to always be there. I also set the curNode.Tag to Jackson County on form load. If Personal is not selected then it defaults to Jackson County. Like I said, I cannot get it in debug mode so I have placed stops at various places and I have stepped through it, never once got the error. I believe it is a timing issue from when the form loads to selecting the parent, all done without user intervention.

I will try again.

[phpman]

Ok, so this is teh code I have

Private Sub tvFolders_AfterSelect(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles tvFolders.AfterSelect
      
        curNode = e.Node       
        Dim root1 As Boolean = False
        Dim ErrorStr As String = Nothing

        Try
            ErrorStr = "start"
            If curNode.Text = "Jackson County" Then      
               
                root1 = True
                 ErrorStr = ErrorStr & Chr(13) & "Root=true"
            ElseIf curNode.Text = "Personal" Then
               
                MnuFDelete.Enabled = False
                ErrorStr = ErrorStr & Chr(13) & "Personal=true"
                lvFiles.Items.Clear()
                Exit Sub
               
            Else
                curNode.Tag = appPath & curNode.Text & "\"
            End If

            If curNode.Tag.ToString.Length < 1 Then
                MsgBox("appPath empty")
            End If
            If curNode.Level = 0 Then
                curNode.ImageIndex = 2
                curNode.SelectedImageIndex = 2
                ErrorStr = ErrorStr & Chr(13) & "level=0"
            Else
                curNode.ImageIndex = 0
                curNode.SelectedImageIndex = 1
                ErrorStr = ErrorStr & Chr(13) & "level > 0"
            End If
           

            If Not curNode.Text = "Personal" Then
                ' Find all the files in the currentlty selected directory
                ErrorStr = ErrorStr & Chr(13) & "Get list folders= " & curNode.Tag
                objFS.ListFoldersFiles(curNode.Tag, lvFiles, ImageList2)
            End If

            If My.Settings.Favorites.Contains(curNode.Text) Then
                MnuFDelete.Enabled = True
                ErrorStr = ErrorStr & Chr(13) & "node set in favorites"
                If lvFiles.Items.Count < 1 Then
                    lvFiles.Items.Clear()

                End If
            Else
                MnuFDelete.Enabled = False
                ErrorStr = ErrorStr & Chr(13) & "node not in favorites"
            End If
            lvFiles.Sort()
            lvFiles.Columns(0).AutoResize(ColumnHeaderAutoResizeStyle.ColumnContent)
            lvFiles.Columns(2).AutoResize(ColumnHeaderAutoResizeStyle.ColumnContent)

        Catch ex As Exception
            Debug.WriteLine(ex.Message)
            MsgBox("Select Failed" & Chr(13) & Chr(13) & ex.Message & Chr(13) & ErrorStr, vbOKOnly, "Failed To Select")
        End Try
    End Sub

Which I had added strings to each section. I got the error after many reboots. And you can see the error I get. Again, I cannot get it in the .NET studio. I am also having issue son that as well as I cannot test it in the studio as it conflicts with the application running on my current desktop. But thats another thread, lol

[phpman]

is there anyway to avoid selecting the default tree until after it loads? because it doesn't look like I am setting it any place. unless anybody has any idea where that error is coming from