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Thread: [RESOLVED] [2005]

  1. #1

    Thread Starter
    Lively Member
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    Sep 2007
    Posts
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    Resolved [RESOLVED] [2005]

    Hi all!

    Thanks for coming to my rescue again.

    I'm getting this error:

    Cannot refer to an instance member of a class from within a shared method or shared member initializer without an explicit instance of the class.


    Currently trying to code teh dreaded hwk question everyone is getting. Try to run my code:

    Code:
    
    
    
    [B]
    
        Public Shared Sub OnTimerEvent(ByVal [source] As Object, ByVal e As EventArgs)
    
            Dim i, j, l, k As Integer
            Do
                i = i + 1
                j = i + 1
                k = i + 1
                l = i + 1
    
    
                Select Case Val(i)
    
                    Case 0
    
                        topPence.ForeColor = Color.Black
                        topleftPence.ForeColor = Color.Black
                        toprightPence.ForeColor = Color.Black
                        bottomleftPence.ForeColor = Color.Black
                        bottomPenceRight.ForeColor = Color.Black
                        bottomPence.ForeColor = Color.Black
    
                    Case 1
                        toprightPence.ForeColor = Color.Black
                        bottomPenceRight.ForeColor = Color.Black
    
                    Case 2
    
                        topPence.ForeColor = Color.Black
                        toprightPence.ForeColor = Color.Black
                        topmiddlePence.ForeColor = Color.Black
                        bottomleftPence.ForeColor = Color.Black
                        bottomPence.ForeColor = Color.Black
    
    
                    Case 3
    
                        topPence.ForeColor = Color.Black
                        toprightPence.ForeColor = Color.Black
                        topmiddlePence.ForeColor = Color.Black
                        bottomPenceRight.ForeColor = Color.Black
                        bottomPence.ForeColor = Color.Black
    
    
    
                    Case 4
    
                        topleftPence.ForeColor = Color.Black
                        topmiddlePence.ForeColor = Color.Black
                        bottomPenceRight.ForeColor = Color.Black
                        toprightPence.ForeColor = Color.Black
    
                    Case 5
                        topPence.ForeColor = Color.Black
                        topleftPence.ForeColor = Color.Black
                        topmiddlePence.ForeColor = Color.Black
                        bottomPenceRight.ForeColor = Color.Black
                        bottomPence.ForeColor = Color.Black
    
                    Case 6
                        topleftPence.ForeColor = Color.Black
                        topmiddlePence.ForeColor = Color.Black
                        bottomPenceRight.ForeColor = Color.Black
                        bottomPence.ForeColor = Color.Black
                        bottomleftPence.ForeColor = Color.Black
    
    
                    Case 7
                        topPence.ForeColor = Color.Black
                        toprightPence.ForeColor = Color.Black
                        bottomPenceRight.ForeColor = Color.Black
    
                    Case 8
                        topPence.ForeColor = Color.Black
                        topleftPence.ForeColor = Color.Black
                        toprightPence.ForeColor = Color.Black
                        topmiddlePence.ForeColor = Color.Black
                        bottomleftPence.ForeColor = Color.Black
                        bottomPence.ForeColor = Color.Black
                        bottomPenceRight.ForeColor = Color.Black
    
                    Case 9
    
                        topPence.ForeColor = Color.Black
                        topleftPence.ForeColor = Color.Black
                        toprightPence.ForeColor = Color.Black
                        topmiddlePence.ForeColor = Color.Black
                        bottomPenceRight.ForeColor = Color.Black
    
    
    
                End Select
    
                Select Case Val(j)
    
                    Case 0
    
                        topPence2.ForeColor = Color.Black
                        topleftPence2.ForeColor = Color.Black
                        topRightPence2.ForeColor = Color.Black
                        bottomleftpence2.ForeColor = Color.Black
                        bottomPenceRight2.ForeColor = Color.Black
                        bottomPence2.ForeColor = Color.Black
    
                    Case 1
                        topRightPence2.ForeColor = Color.Black
                        bottomPenceRight2.ForeColor = Color.Black
    
                    Case 2
    
                        topPence2.ForeColor = Color.Black
                        topRightPence2.ForeColor = Color.Black
                        topmiddlePence2.ForeColor = Color.Black
                        bottomleftpence2.ForeColor = Color.Black
                        bottomPence2.ForeColor = Color.Black
    
    
                    Case 3
    
                        topPence2.ForeColor = Color.Black
                        topRightPence2.ForeColor = Color.Black
                        topmiddlePence2.ForeColor = Color.Black
                        bottomPenceRight2.ForeColor = Color.Black
                        bottomPence2.ForeColor = Color.Black
    
    
    
                    Case 4
    
                        topleftPence2.ForeColor = Color.Black
                        topmiddlePence2.ForeColor = Color.Black
                        bottomPenceRight2.ForeColor = Color.Black
                        topRightPence2.ForeColor = Color.Black
    
                    Case 5
                        topPence2.ForeColor = Color.Black
                        topleftPence2.ForeColor = Color.Black
                        topmiddlePence2.ForeColor = Color.Black
                        bottomPenceRight2.ForeColor = Color.Black
                        bottomPence2.ForeColor = Color.Black
    
                    Case 6
                        topleftPence2.ForeColor = Color.Black
                        topmiddlePence2.ForeColor = Color.Black
                        bottomPenceRight2.ForeColor = Color.Black
                        bottomPence2.ForeColor = Color.Black
                        bottomleftpence2.ForeColor = Color.Black
    
    
                    Case 7
                        topPence2.ForeColor = Color.Black
                        topRightPence2.ForeColor = Color.Black
                        bottomPenceRight2.ForeColor = Color.Black
    
                    Case 8
                        topPence2.ForeColor = Color.Black
                        topleftPence2.ForeColor = Color.Black
                        topRightPence2.ForeColor = Color.Black
                        topmiddlePence2.ForeColor = Color.Black
                        bottomleftpence2.ForeColor = Color.Black
                        bottomPence2.ForeColor = Color.Black
                        bottomPenceRight2.ForeColor = Color.Black
    
                    Case 9
    
                        topPence2.ForeColor = Color.Black
                        topleftPence2.ForeColor = Color.Black
                        topRightPence2.ForeColor = Color.Black
                        topmiddlePence2.ForeColor = Color.Black
                        bottomPenceRight2.ForeColor = Color.Black
    
    
    
                End Select
    
                Select Case Val(k)
    
                    Case 0
    
                        topPence3.ForeColor = Color.Black
                        topleftPence3.ForeColor = Color.Black
                        topRightPence3.ForeColor = Color.Black
                        bottomleftPence3.ForeColor = Color.Black
                        bottomPenceRight3.ForeColor = Color.Black
                        bottomPence3.ForeColor = Color.Black
    
                    Case 1
                        topRightPence3.ForeColor = Color.Black
    ...... and thats where the error stops!

    If you could help me please, Thanks again in advance

    thrillseeker

  2. #2
    Frenzied Member
    Join Date
    May 2006
    Location
    Toronto, ON
    Posts
    1,093

    Re: [2005]

    Well, it looks like you're trying to access a class when that class isn't created. This is the "Shared" coding's equivalent of "Object Reference not sset to instance of Object".

    IIRC, if you want to access an object from a Shared method, that object either needs to be shared itself or explicitly created within the shared method.

  3. #3

    Thread Starter
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    Join Date
    Sep 2007
    Posts
    76

    Re: [2005]

    So how do I go about sorting it out then? Thanks for the reply - Im a little slow with vb.net!

  4. #4
    PowerPoster stanav's Avatar
    Join Date
    Jul 2006
    Location
    Providence, RI - USA
    Posts
    9,290

    Re: [2005]

    The error itself is self-explaining... You cannot access a non-shared member from within a shared member. So the solution is simply unsharing your method. Remove the keyword "Shared" from your declaration
    Code:
    Public Sub OnTimerEvent(ByVal [source] As Object, ByVal e As EventArgs)

  5. #5
    Super Moderator Shaggy Hiker's Avatar
    Join Date
    Aug 2002
    Location
    Idaho
    Posts
    40,106

    Re: [2005]

    How did you get a shared timer event in the first place? It must have been custom created, but to what end?
    My usual boring signature: Nothing

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