Converting Bitmaps to Icons

[badger111]

Can anybody give me an example of converting bitmaps to icons using vb.net - and/or point me to a good resource.

many many thanks

lee

[Dijkgraaf]

What exactly do you mean by Icons?
Like the favicon.ico format, or something else?

[badger111]

using the system.drawing .net library to convert .bmp files to .ico format

[Dijkgraaf]

Have you done a search with your favourite search engine for system.drawing .net .bmp .ico?
I'm finding various pages discussing it and even some examples.

[wildbest]

[msdn.microsoft.com...]

[badger111]

I've have a trawl throught a large chunk of the info in webland regarding using system.drawing library to convert bitmaps to icons (or bitmaps to wmf) and it seems that you cant! not with this library anyway MS KB 316563. knackers! anybody got any other ideas - i just need something 'quick and dirty'.

regards
lee (with a little less hair)

[Dijkgraaf]

Well bitmaps to wmf I can understand being a problem, as a bmp is a raster format and a wmf is a vector format, however going from bmp to ico should not be a problem as they are both raster formats.

I'll sticky you a URL that might do the trick, they have it as a web service which is not quite what you are after, but the rest of the code might do the trick.

[badger111]

hey Dijkgraaf

i saw that piece of code on my trawl. the problem is that using the Imaging.Save method of the System.Drawing library to convert a .bmp to .ico creates a .png file!

still looking...

cheers
lee

[duckhunter]

Thanks for posing the question. I've been wanting to update my favicon.ico, just didn't have the software loaded to do the .ico. Didn't think about .NET's abilities. What will it be able to do next?

Imports System.IO

Dim bmp As Bitmap = CType(Bitmap.FromFile("C:\inetpub\wwwroot\TestBed\file.bmp"), Bitmap)
Dim ico As Icon = Icon.FromHandle(bmp.GetHicon())
Dim file As FileStream = New FileStream("C:\inetpub\wwwroot\TestBed\file.ico", FileMode.OpenOrCreate)
ico.Save(file)
file.Close()
ico.Dispose()