how to draw thousands of lines quickly to a picturebox

[fde_edf]

Hi all,

I have a project to draw thousands of cells of a cellular network to a picturebox. These cells are basically represented by a line.

My program is looking like this :

    Private Sub ReDraw()
        Dim Pi As Double
        Pi = 3.141592654
        Me.PictureBox1.Refresh()
        Dim sectorsize As Integer
        sectorsize = 40
        Dim myGraphics As Graphics = PictureBox1.CreateGraphics
        Dim myFont As Font
        Dim myBrush As Brush
        myBrush = New Drawing.SolidBrush(Color.DarkCyan)
        myFont = New System.Drawing.Font("Verdana", 6)
        Dim myPen As Pen
        myPen = New Pen(Brushes.DarkMagenta, 10)
        For Each row In CellData.CellsTable.Rows
            Dim Temp As String, sector As String, Band As Integer
            Dim X1, Y1, X2, Y2, X5, Y5 As Integer
            X1 = row("X")
            Y1 = row("Y")
            X2 = row("X") + sectorsize * Math.Sin(row("Azimuth") * Pi / 180)
            Y2 = row("Y") - sectorsize * Math.Cos(row("Azimuth") * Pi / 180)
            myGraphics.DrawLine(myPen, X1, Y1, X2, Y2)
        Next row
    End Sub

The problem that I have is that it takes some time to draw all these lines and I wand to add some more functionality to it and it becomes really slow.
So how can I make it faster ?

Here are the possibilities I can think of :

1) Put screen updating on hold at the beginning of the Sub and resume it at the end. How to do it ?

2) I know that processing is way faster that print to screen so is there a way of preparing a collection or a buffer and draw it ?

3) Is it possible to save all these lines as a bitmap and then print bitmap on the screen?

Thank you
Fabrice