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hide TABS if not specified VB.NET 2003/2010

Posted on 2011-03-11
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Last Modified: 2012-05-11
Hi Experts,
I work from a Winform with TabControl + 10 tabs.

my solution now has random tabs on form_load (thanks to previous solution)

Now i want to only limit/show only 5 of them random TABS at any one time. So randomize 10 tabs but only show 5.

Thanks,
Roberto
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Question by:RobertoFreemano
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6 Comments
 
LVL 85

Expert Comment

by:Mike Tomlinson
ID: 35113417
Try something like:
Public Class Form1

    Private R As New Random
    Private tabs As New ArrayList

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        For Each tp As TabPage In TabControl1.TabPages
            tabs.Add(tp)
        Next

        ShowRandomTabs(5)
    End Sub

    Private Sub ShowRandomTabs(ByVal number As Integer)
        TabControl1.TabPages.Clear()

        Dim temp As New ArrayList
        For Each tp As Object in tabs
            temp.Add(tp)
        Next

        Dim index As Integer
        For i As Integer = 1 to number
            If temp.Count > 0 Then
                index = R.Next(0, temp.Count)
                TabControl1.TabPages.Add(temp(index))
                temp.RemoveAt(index)
            End If
        Next
    End If

End Class

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Author Comment

by:RobertoFreemano
ID: 35114934
Hi Idle_Mind,

I get the following errors:
An unhandled exception of type 'System.NullReferenceException' occurred in mscorlib.dll

Additional information: [Resource lookup failed - infinite recursion detected.  Resource name: Arg_NullReferenceException]


&
There is no source code available for the current location. > 0000004c  mov         edi,dword ptr [eax+4]
0
 

Author Comment

by:RobertoFreemano
ID: 35114983
Those errors are from 2003, but if I put this code into Visual Basic 2010 Express - it works fine.
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Author Comment

by:RobertoFreemano
ID: 35115019
Hi Idle_Mind,

Do you think I should take a leap of faith in Visual Basic 2010 Express to continue developing in this from now on?
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LVL 85

Accepted Solution

by:
Mike Tomlinson earned 110 total points
ID: 35116306
I would...you can make your project target the .Net 2.0 framework which is on most machines.

Not sure what is causing that error in 2003.
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Author Closing Comment

by:RobertoFreemano
ID: 35116355
Thanks Idle_mind ;)
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