Fillpolygon-unknown number of points

In the examples I can find about 'Fillpolygon' its always drawn with a known numer of points (see example below).

How do I handle this if I don't know the number of points,,,say, I read the number of points and coordinates from at different file, every time I run the program

Example:

Public Sub FillPolygonPoint(ByVal e As PaintEventArgs)
Dim blueBrush As New SolidBrush(Color.Blue)

Dim point1 As New Point(50, 50)
Dim point2 As New Point(100, 25)
Dim point3 As New Point(200, 5)
Dim curvePoints As Point() = {point1, point2, point3}
.
e.Graphics.FillPolygon(blueBrush, curvePoints)

End Sub