1. Introduction
2. DataTypes & Operators
3. New Features
4. More New Features

Comments

1. trooper
   05 Oct 2004 at 17:33
   re-install your prerequisites cd this will correct the problem.
2. trooper
   05 Oct 2004 at 17:23
   to create an actual installation cd-rom for your application you would copy the entire contents of the Release folder to writable cd-rom at this point. If the target computers don't include the .net framework, you should also copy the .net framework redistributable file (dot-netfx.exe), which the user will have to install separately. You need a cd-rw drive to do this.
3. Muhammad Riaz
   10 Mar 2004 at 13:12

   hello, I developed application in visual basic .net and when i tried to run this application in other computers then setup file prompt me message to first install the .net framework in the computer then installation will start so after installing the .net framework in other computer, my setup or application worked fine but .net framework file size is almost 23 MB that is very big to distribute with my application or to ask from the user to download this file. My application size is only 4MB. Well, i conclude that VB.net is not useful if some one want to distribute his small application to many hundred computers because it require .net framework (23 MB) that is very difficult to download. So i am moving back to VB6 for my application developemnt. If you have any idea that i should stick to VB.net then please let me know, I need help. It is very difficult for me to write code again for VB6. bye

4. James Lang
   03 Jun 2003 at 16:42

   You probably figured this out by now but for anyone else with the same or similar problem looking for the old VB6 control array then you need to delegate the Event to a helper method.
   

   
   The helper method must have the same signature as the event being delegated
   Usually along the lines of  “Event Name”
   (ByVal sender As Object, ByVal e As System.EventArgs)
   

   
   

   
   to demonstrate create a new windows project and add 4 radio buttons to the form or another control if you prefer( Alter the code to suit )
   and add the following code to the form
   

   
   Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
          AddHandler RadioButton1.Click, AddressOf RadioChanged
          AddHandler RadioButton2.Click, AddressOf RadioChanged
          AddHandler RadioButton3.Click, AddressOf RadioChanged
          AddHandler RadioButton4.Click, AddressOf RadioChanged
   

   
      End Sub
   

   
      Private Sub RadioChanged(ByVal sender As Object, ByVal e As System.EventArgs)
          MsgBox(CType(sender, RadioButton).Name)
      End Sub
   

   
   

   
   OK this a bit useless as most people would not use radiobuttons in this manor
   

   
   Add a number of textboxes to the form about 10 would be ok
   Then add this code to the form load event
   

   
         Dim ctrl As Control
          For Each ctrl In Me.Controls
              If TypeOf ctrl Is TextBox Then
                  AddHandler ctrl.Validating, AddressOf ValidateTextFields
              End If
          Next
          ctrl.Dispose()
          ctrl = Nothing
   

   
   

   
   and add this method
   

   
   Private Sub ValidateTextFields(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs)
          e.Cancel = CType(sender, TextBox).Text = String.Empty
          If e.Cancel = True Then
              MessageBox.Show("TextField " & CType(sender, TextBox).Name & " Must Be Completed", "Input Error", MessageBoxButtons.OK, MessageBoxIcon.Information)
          End If
      End Sub
   

   
   

   
   You should now have a simple ( all be it poor for user input, but it is only a demo of a concept) validation on all textboxes
   

   
   Why not add it to the handles clause of the first textboxes validation event
   Like
   Private Sub TextBox1_Validating(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs)
   Handles TextBox1.Validating, TextBox2.Validating
   

   
      End Sub
   

   
   This will work but you can not remove the handler at a later stage Add the following to the ValidateTextFields method after the previous if statement
   

   
   

   
     If CType(sender, TextBox).Name = "TextBox1" Then
              RemoveHandler TextBox1.Validating, AddressOf ValidateTextFields
          End If
   

   
   

   
   This should remove the handler and the validation
   

   
   

   
   I Hope this helps
   Cheers
   James
   

   
   

   
   

5. Robert Tulloch
   02 Apr 2003 at 16:14
   In my current project I have to check the state of a number of radio buttons. For example if I have to check the state of 100 buttons do I have to do each one individually, e.g.
   
   if radState0.checked = true then sum += 1
   ....
   ....
   if radSate99.checked = true then sum += 1
   
   or can I do it in a loop e.g.
   
   for i = 0 to 99
   if radState(i).checked = true then sum += 1
   next i
   
   Please excuse the naivity of the question but I am starting from the ground up.
   
   Regards
   
   Bob
6. chrucci
   25 Feb 2003 at 16:11

   When I ran into this problem it was due to the fact that i was on a different machine and some of the files included in References for my VB6 app weren't installed and registered on the new machine.  Is it possible that some of the files that your VB6 app needs were uninstalled or unregistered when you uninstalled VB6?

7. shantanu_a
   24 Jan 2003 at 04:42

   I have a project designed and implemented using VB6.0 and Oracle 8i.Recently I unistalled Visual studio 6.0 and installed .NET.Now when I try to open my project through the .NET IDE it invokes the update wizard.However the updation does not succeed as the process reports several missing file.Can anyone help me out in updating the above project to .NET platform.Why are the errors encountered?
   Thanks
   Shant

8. Sharjeel Ahmed Qureshi
   14 Jun 2002 at 13:57

   I don't understand the reason why the size of Bool type in VB.Net is of 4 bytes (as by article of G.Gnana Arun Ganesh). Can somebody explain?

9. Developer Fusion Bot
   01 Jan 1999 at 00:00

   This thread is for discussions of Leverage the .NET Framework with Visual Basic.NET.