controls.remove() not working.

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In my project i have moving picturebox array & if they intersect treeview will disable.& when i rightclick on the picturebox it will delete.After deleting picturebox its effects still there.When other picturebox moving on that deleted area
still treeview is disabled.i used this code.

VB

Me.Controls.Remove(a)

where a= new picturebox

Posted 26-Jun-12 8:31am

boys13

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Sergey Alexandrovich Kryukov 26-Jun-12 14:42pm

Perhaps more information could help. What is "its effects"? Any code sample?
--SA

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Shahan Ayyub · Accepted Answer · 2012-06-27T08:33:00

Hi!

My guess is that you are using a single variable to generate an array of picture boxes. So i would suggest this to work around the issue:

STEP 1. When creating picture box assigned a unique name to it. like : pic1, pic2, pic3 .... etc

e.g.,

VB

a = New PictureBox()
counter += 1      ' a global variable initialized with zero
a.Name = "a" & counter.ToString()

Me.Controls.Add(a)

'Event Handlers
AddHandler a.MouseDown, AddressOf a_MouseDown
AddHandler a.MouseMove, AddressOf a_Mousemove
AddHandler a.MouseUp,   AddressOf a_Mouseup

STEP 2. Use Control.RemoveByKey() method to remove it:

VB

Private Sub a_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs)
       If e.Button = Windows.Forms.MouseButtons.Right Then
            Me.Controls.RemoveByKey(CType(sender, PictureBox).Name)'remove control
            Me.Invalidate(True)       ' redraw controls
        End If
End Sub