Solved

How Can I have a program Loader that does not stays open

Posted on 2006-06-14
1
240 Views
Last Modified: 2011-09-20
VS 2005 VB
I have a program loader that I wrote to check for Updates on the main program. If any, It will Copy the new updates and then execute the main program and close it self. The Main Program will stay running as normal

The problem I have is that when I close the loader, I get an error. Here is my code for the loader.

    Private Sub safPOSStart_Activated(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim llOk As Boolean = True
        Dim oInfoRow As DataRow
        Dim DSXmlDataTable As DataTable = New DataTable
        Me.Show()
        Me.Activate()
        m_cAppPath = Directory.GetCurrentDirectory()
        UpdateProgramFiles()
        ShowMsg("Loading Station Application ...")
        Shell(m_cAppPath & "\safPOS.exe", AppWinStyle.NormalFocus)
        Me.Close()
    End Sub

This is the error
System.ObjectDisposedException was unhandled
  Message="Cannot access a disposed object.\r\nObject name: 'SafPosStart'."
  Source="System.Windows.Forms"
  ObjectName="SafPosStart"
  StackTrace:
       at System.Windows.Forms.Control.CreateHandle()
       at System.Windows.Forms.Form.CreateHandle()
       at System.Windows.Forms.Control.get_Handle()
       at System.Windows.Forms.ContainerControl.FocusActiveControlInternal()
       at System.Windows.Forms.Form.SetVisibleCore(Boolean value)
       at System.Windows.Forms.Control.set_Visible(Boolean value)
       at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
       at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
       at System.Windows.Forms.Application.Run(ApplicationContext context)
       at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
       at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
       at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
       at safPOSStart.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
       at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
0
Comment
Question by:ofern01
1 Comment
 
LVL 85

Accepted Solution

by:
Mike Tomlinson earned 500 total points
ID: 16908174
For VB.Net 2005 use the new Shown() event instead of Load():

Public Class Form1

    Private Sub Form1_Shown(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Shown
        ' make sure the form is fully displayed...
        Me.Show()
        Application.DoEvents()

        ' simulated form loading code...
        System.Threading.Thread.Sleep(5000)

        ' close the form
        Me.Close()
    End Sub

End Class
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
how to use laptop or pad camera in vb.net windows application 2 72
DataGridView Events ? 3 47
VB.NET (2008) - Refactoring Question 2 21
write xml in vb.net 2 24
Article by: Kraeven
Introduction Remote Share is a simple remote sharing tool, enabling you to see, add and remove remote or local shares. The application is written in VB.NET targeting the .NET framework 2.0. The source code and the compiled programs have been in…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

809 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