Bitmaps in VB.Net or What I threw together in a couple minutes

I have been playing a game called Illyriad lately. Now what does this have to do with VB.Net you ask? Not much until you get to the map. In-game you can only see a 13 by  13 chunk of the map at a time so I collected all the data needed and made my own map of the Island my Alliance controls. The map works fine but I wanted to make one big image instead of a lot of tiles put together so I threw something together in Visual Basic 2010.

First I needed to get the separate pictures into the program as bitmaps and make the background color(white) transparent. Because there where a lot I thew them all in an array called Img(). For my example I will have only 2 for simplicity.

        Dim Img(2) as Bitmap
        Img(0) = Image.FromFile("C:\wherever\image\stored.png")
        Img(1) = Image.FromFile("C:\wherever\image\stored2.png")
        Img(0).MakeTransparent(Color.White)
        Img(1).MakeTransparent(Color.White)

Then I put together the map data and stuck that in another array as well. This one called map(,)

        Dim map(,) As Integer = New Integer(2, 2) {{0,1,0,1},{1,0,1,0}}

Now I made some variables that would be needed, including a new bitmap, mapimg, to contain the final image as well as a new Graphics called gra.

        Dim x As Integer
        Dim y As Integer
        Dim mapimg As New Bitmap(200, 100)
        Dim gra As Graphics = Graphics.FromImage(mapimg)

Finally I use some For loops to cycle through all of the map positions, saved the mapimg as map.png, and made it display a message to denote that it was finished seeing as my actual code took a lot longer than the example would.

        For x = 0 To 1
            For y = 0 To 3
                gra.DrawImage(Img(map(x, y)), y * 50, x * 50)
            Next
        Next
        mapimg.Save("C:\whereever\youwant\map.png")
        MessageBox.Show("Done!")

Now you can not tell from the example but the images overlap in my map slightly. The final product of this code ended up as one big picture all together: My Map Complete