VB.NET 2008 Refresh System.Graphics.DrawString

[srj115]

I have a form that periodically updates an image, which in turn is supposed to update a caption. However, each time the form updates the picture, the caption remains the same as the first picture's caption. The captions are stored in an ArrayList, and I'm positive that the index is being updated appropriately. For instance, I can MsgBox(arrCaptions(intArrIndex)) and get the correct caption, but the new caption never replaces the first caption displayed in the form.

Private Sub frmMain_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
        Dim F As New Font("Arial", 10, FontStyle.Regular)
        Dim B As New SolidBrush(Color.White)
        Dim strFormat As New StringFormat
        strFormat.Alignment = StringAlignment.Center
 
        'MsgBox(arrCaptions(intArrIndex))
        e.Graphics.DrawString(arrCaptions(intArrIndex), F, B, (PictureBox1.Width / 2), PictureBox1.Height + 2, strFormat)
    End Sub
 
    Private Sub PictureBox1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles PictureBox1.Paint
        frmMain_Paint(sender, e)
    End Sub
 

[Plater]

Why are you having your picturebox's paint function calling your form's paint method. seems redundant?
Also, wouldn't it be much more simple to just a Label control and update it's text?