Solved

Canceling the NodeMouseClick for a Treeview in vb.net

Posted on 2011-03-17
3
912 Views
Last Modified: 2012-05-11
Hello,

I've got a VB2010 windows application that has a treeview control in it.  I have several nodes in the Treeview (Call Info, Victim, Witness).  When the application starts the "Call Info" node is always selected.  If the user selects the "Victim" node in the treeView1_NodeMouseClick event I do some validation.  If there is an error in validation I want to cancel out this event and go back to the previous node.  How would I go about doing this.  I am attaching the nodemouseclick code.  If you look at Case 1 you will see where I am trying to set it back to node 0 but when the code fires node 1 is still selected.  Any help would be greatly appreciated.
Private Sub treeView1_NodeMouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles treeView1.NodeMouseClick
        Select Case e.Node.Index
            Case 0
                PanelManager1.SelectedPanel = Me.mpCallInfo
            Case 1
                If g_lng_Main_PK = 0 Then
                    m_s_Insert_Update()
                    If m_bln_Insert_Update_Error Then
                        treeView1.SelectedNode = treeView1.Nodes(0)
                        Exit Select
                    End If
                End If
                PanelManager1.SelectedPanel = Me.mpInformants
            Case 2
                If g_lng_Main_PK = 0 Then
                    m_s_Insert_Update()
                    If m_bln_Insert_Update_Error Then
                        Exit Select
                    End If
                End If
                PanelManager1.SelectedPanel = Me.mpSuspects
            Case 3
                If g_lng_Main_PK = 0 Then
                    m_s_Insert_Update()
                    If m_bln_Insert_Update_Error Then
                        Exit Select
                    End If
                End If
                PanelManager1.SelectedPanel = Me.mpVehicles
            Case 4
                If g_lng_Main_PK = 0 Then
                    m_s_Insert_Update()
                    If m_bln_Insert_Update_Error Then
                        Exit Select
                    End If
                End If
                PanelManager1.SelectedPanel = Me.mpWitnesses
            Case 5
                If g_lng_Main_PK = 0 Then
                    m_s_Insert_Update()
                    If m_bln_Insert_Update_Error Then
                        Exit Select
                    End If
                End If
                PanelManager1.SelectedPanel = Me.mpContacts
            Case 6
                If g_lng_Main_PK = 0 Then
                    m_s_Insert_Update()
                    If m_bln_Insert_Update_Error Then
                        Exit Select
                    End If
                End If
                PanelManager1.SelectedPanel = Me.mpAssignments
            Case 7
                If g_lng_Main_PK = 0 Then
                    m_s_Insert_Update()
                    If m_bln_Insert_Update_Error Then
                        Exit Select
                    End If
                End If
                PanelManager1.SelectedPanel = Me.mpFollowUp
        End Select

    End Sub

Open in new window

0
Comment
Question by:UncleT
3 Comments
 
LVL 35

Expert Comment

by:Miguel Oz
ID: 35161065
try invalidate the tree, in case 1:
Case 1
                If g_lng_Main_PK = 0 Then
                    m_s_Insert_Update()
                    If m_bln_Insert_Update_Error Then
                        treeView1.SelectedNode = treeView1.Nodes(0)
                        treeView1.Invalidate()
                        Exit Select
                    End If
                End If
                PanelManager1.SelectedPanel = Me.mpInformants
Note: I am assuming is Winforms.
0
 
LVL 12

Accepted Solution

by:
omegaomega earned 500 total points
ID: 35167122
Hello, UncleT,

I think the problem here is because the node clicked on does not get selected until after the NodeMouseClick event is executed.  I think that you will do better if you use the AfterSelect event to reset the selected node.

Cheers,
Randy
0
 

Author Closing Comment

by:UncleT
ID: 35188857
Thanks Randy.  Worked perfectly.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The ECB site provides FX rates for major currencies since its inception in 1999 in the form of an XML feed. The files have the following format (reducted for brevity) (CODE) There are three files available HERE (http://www.ecb.europa.eu/stats/exch…
If you need to start windows update installation remotely or as a scheduled task you will find this very helpful.
Along with being a a promotional video for my three-day Annielytics Dashboard Seminor, this Micro Tutorial is an intro to Google Analytics API data.
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, just open a new email message. In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now