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VS 2010 [RESOLVED] Dynamically created button-type class array problem

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I am a novice in Visual Basic (I have been studying it at school for 2 months) and I have a problem with my current project. I am making a replica of Minesweeper. I want the 256 (16x16) tiles of the board to be created dynamically during the form load of the program. I use my own class for the tiles, which inherits the Button class because I need them to have some additional parameters. I have a two-dimensional array of that class and I use two nesting for...next statements to create all the elements in the array and then add them to the form controls so that they appear in the main window. However, instead of evenly spreading over the empty field to form a grid, they all appear in the lower-right corner on top of each other like this:

Attachment 95409

Here is the code I am using for the tiles:

Code:

Public Class Tile
        Inherits Button
        Public mine, flag As Boolean
        Public x, y As Integer
    End Class

    Dim tiles(20, 20) As Tile
    Dim til As New Tile
    Dim l, t As New Integer

    Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
        l = 12
        t = 114
        For i = 1 To 16
            For j = 1 To 16
                til.x = i
                til.y = j
                til.Left = l
                til.Top = t
                til.Width = 32
                til.Height = 32
                til.FlatStyle = FlatStyle.Popup
                til.Image = My.Resources.normaltile
                til.mine = False
                til.flag = False
                tiles(i, j) = til
                Me.Controls.Add(tiles(i, j))
                l = l + 32
            Next
            l = 12
            t = t + 32
        Next
    End Sub

How can I fix this?
Attached Images
 

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