One picture box shown many times in the same form - vb.net

Question

My Goal is to create a maze in VS using VB.net, I currently have managed to make a random Generator that makes the "maze" and shows the location of the last wall made.
Horizontalwalls = Randomizer.Next(60, 91) 'Makes 60 - 90 Horizontal Walls
VirticalWalls = Randomizer.Next(60, 91) 'Makes 60 -90 Vertical Walls
Dim HLoops = 0 'counter for Horizontal walls
Dim VLoops = 0
lbxHorizontal.Items.Clear() 'empties the list box i have which stores the walls location
lbxvertical.Items.Clear()
Do While HLoops < (Horizontalwalls)
HLoops += 1 'adds to the counter
lbxHorizontal.Items.Insert(0, Randomizer.Next(0, 10))
lbxHorizontal.Items.Insert(0, Randomizer.Next(0, 10))
'Attempt at making visable walls
pbxhorizontalwall.Top = (lbxHorizontal.Items.Item(0) * GridSize - 2) 'This and next line puts the wall in desired location
pbxhorizontalwall.Left = (lbxHorizontal.Items.Item(1) * GridSize - 2)
Loop
however the only way i know to make all the walls visible is to make 90 horizontal wall pictures, go though naming them all, then GLaaa... there must be a easier way to copy the same image over the screen at the desired location.
At the moment, all i really want to know is the line of code that will copy the image (and maybe a way to mass clear them all when the maze is reset) and then i'll work out how to get it into place...

Answer 1

You first create the list of images with:
Dim imageList As New List(Of Bitmap)
imageList.Add("image to add") 'do it for all the images you have
Then create a bitmap:
Dim bitmapWall as Bitmap = New Bitmap(widthOfbitmap, heightofbitmap, Drawing.Imaging.PixelFormat.Format24bppRgb)
Draw the list of images to the bimap:
Dim objGraphics As Graphics = Graphics.FromImage(bitmapWall)
For i = 0 To imageList.Count
objGraphics.DrawImage(imageList(i), x, y, imageList(i).Width, imageList(i).Height)
Next
objGraphics.Dispose()
x,y is the coordinates of where your images are drawn (you should change them for every iteration)
Lastly:
Me.BackgroundImage = bitmapWall
Me.Invalidate()
Dont forget to dispose the list and the bitmap in the end.
valter