scrivere testo su immagine

[oregon]

Prova con queste modifiche

        Dim testo As String = "Testo in sovraimpressione"

        PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage   ' Se necessario

        PictureBox1.Image = Image.FromFile(FilePath)
        Dim g As Graphics = Graphics.FromImage(PictureBox1.Image)
        Dim myFont As New Font("Tahoma", 10, FontStyle.Regular)

        Dim grandezzaTesto As SizeF = g.MeasureString(testo, myFont)
        Dim xLocation As Single = PictureBox1.Image.Width - grandezzaTesto.Width
        Dim yLocation As Single = PictureBox1.Image.Height - grandezzaTesto.Height

        g.DrawString(testo, myFont, Brushes.Lime, xLocation, yLocation)
        g.Save()
        PictureBox1.Image.Save(FilePath)

        g.Dispose()