Приведение строки к определенному типу - Visual Basic .NET

Public Class Dice
 
    Dim res(3) As Integer
    Dim p1, p2, pt1, pt2 As Integer
 
    Private Sub Dice_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Randomize()
    End Sub
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        compArray()
        drawPic()
        Proverka()
        Winner()
        totalCount()
    End Sub
 
    Private Function Chance() 'Рандомчик 1-6
        Dim u, l As Integer
        Dim rV As Double
        u = 6
        l = 1
        rV = CInt(Math.Floor((u - l + 1) * Rnd())) + l
        Return rV
    End Function
 
    Private Sub compArray() 'Генерация массива
        For i = 0 To 3
            res(i) = Chance()
        Next
    End Sub
 
    Private Sub drawPic() 'Отрисовка картинок, в зависимости результата генерации массива
        'For i = 1 To 4                                                                                 ]Собственно, почему не работает ? Постоянно расписывать для каждого элемента...
        'PictureBox(i).Image = My.Resources.D(i-1)                                                          ]А если кубиков будет 12, 24....
        'Next                                                                                               ]Подскажите, как привести строку к нужному типу, или какой метод есть в VB, чтобы
        'PictureBox1.Image = My.Resources.D + res(0).ToString                                               ]обрабатывать именно такие условия. И по возможности, объяснить в 2-3 словах.
        'PictureBox1.Image = My.Resources.D1                                                                ]Также ниже есть Private Sub Button2_Click - Label1.Text = 0; Label1.Visible = True
        'PictureBox1.Image = CType(("My.Resources.D" + res(0).ToString), System.Drawing.Bitmap)             ]  
        PictureBox1.ImageLocation = Application.StartupPath & "\Resources\D" + res(0).ToString + ".jpg"
        PictureBox2.ImageLocation = Application.StartupPath & "\Resources\D" + res(1).ToString + ".jpg"
        PictureBox3.ImageLocation = Application.StartupPath & "\Resources\D" + res(2).ToString + ".jpg"
        PictureBox4.ImageLocation = Application.StartupPath & "\Resources\D" + res(3).ToString + ".jpg"
    End Sub
 
    Private Sub Winner() 'Определение победителя
        Dim a, b As Integer
        a = (res(0) + res(1))
        b = (res(2) + res(3))
        If a > b Then
            ListBox1.Items.Add("Победил первый игрок: " + a.ToString + "/" + b.ToString)
            p1 = 1
            p2 = 0
        ElseIf a = b Then
            ListBox1.Items.Add("Ничья: " + a.ToString + "/" + b.ToString)
            p1 = 0
            p2 = 0
        ElseIf a < b Then
            ListBox1.Items.Add("Победил второй игрок: " + a.ToString + "/" + b.ToString)
            p1 = 0
            p2 = 1
        End If
    End Sub
 
    Private Sub totalCount() 'Счетчик
        pt1 = pt1 + p1
        pt2 = pt2 + p2
        LabelP1.Text = pt1
        LabelP2.Text = pt2
    End Sub
 
    Private Sub Proverka() 'Кнопка с цифрами к картинкам
        Label1.Text = res(0)
        Label2.Text = res(1)
        Label3.Text = res(2)
        Label4.Text = res(3)
        Label5.Text = res(0) + res(1)
        Label6.Text = res(2) + res(3)
    End Sub
 
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click 'Кнопка сброса
        pt1 = 0
        pt2 = 0
        LabelP1.Text = pt1
        LabelP2.Text = pt2
        Label1.Text = 0
        Label2.Text = 0
        Label3.Text = 0
        Label4.Text = 0
        Label5.Text = 0
        Label6.Text = 0
        PictureBox1.ImageLocation = Application.StartupPath & "\Resources\D7.jpg"
        PictureBox2.ImageLocation = Application.StartupPath & "\Resources\D7.jpg"
        PictureBox3.ImageLocation = Application.StartupPath & "\Resources\D7.jpg"
        PictureBox4.ImageLocation = Application.StartupPath & "\Resources\D7.jpg"
        ListBox1.Items.Clear()
    End Sub
 
    Private Sub CheckBox1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged
        If CheckBox1.Checked = True Then
            Label1.Visible = True
            Label2.Visible = True
            Label3.Visible = True
            Label4.Visible = True
            Label5.Visible = True
            Label6.Visible = True
            'Button3.Visible = True
        Else
            Label1.Visible = False
            Label2.Visible = False
            Label3.Visible = False
            Label4.Visible = False
            Label5.Visible = False
            Label6.Visible = False
            'Button3.Visible = False
        End If
    End Sub
 
    Public p As New Object
    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click 'Кнопка проверки
        Dim i As Integer = 1
        p = CType("PictureBox" + i.ToString + ".ImageLocation", Object)
        MsgBox(p)
        p = Application.StartupPath & "\Resources\D7.jpg"
        MsgBox(p)
        'MsgBox(PictureBox1.ImageLocation)
    End Sub
End Class