Can you make an alpha transparent PNG with C#?

Question

I have a multi-browser page that shows vertical text.

As an ugly hack to get text to render vertically in all browsers I\'ve created a custom page handler that retur

Answer 1

It turns out that Microsoft have a new dynamic image library for the web as part of the Asp.Net content on CodePlex:

http://www.codeplex.com/aspnet/Release/ProjectReleases.aspx?ReleaseId=16449

Unfortunately it's a little bit much for what I want. Using unsafe code I can roll my own alpha transparency, but that's far too slow given this code's use as part of a high-usage web application.

Is this just a bug in MS's GDI+ .Net implementation?