convert image to bitmap

[dogmatic69]

Hi, Is there a way to convert a system.drawing.image to system.drawing.bitmap without having to save it to disk first. Would appreciate any good help thanks

[Mark Salsbery]

There's three System.Drawing.Bitmap constructors that take a System.Drawing.Image as a parameter... Mark

Mark Salsbery Microsoft MVP - Visual C++ :java:

[dogmatic69]

Hi, thanks for the reply. Im new with C# (started with TP and mainly work in php / MySQL) so constructors is all new to me... Been looking around and cant seem to find the right thing/way to do this. if i have System.Drawing.Image modimage; System.Drawing.Bitmap modbitmap; changes are first done to modimage and then i want to do something like modbitmap = modimage; and then carry on with changes to modbitmap. obviously the modbitmap = modimage; does not work as it is like trying to say strSomething = intSomethign; it would be nice if there was a thing like modbitmap = modimage.tobitmap(); lol anyway, my trials have proved fruitless so i am hoping that you would be kind enough to spare a min and help me out. thanks in advance.:cool:

[GrinderDev]

Try this: modbitmap = new System.Drawing.Bitmap(modimage);

[Mark Salsbery]

Try what GrinderDev suggested ;) Mark

Mark Salsbery Microsoft MVP - Visual C++ :java:

[Matthew Butler 0]

You could also just cast it... (This is a bit faster and uses less memory). bitmap = (Bitmap)image;

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Matthew Butler

[Luc Pattyn]

Yes, most of the time that will work; what if the image happens to be a Metafile? :)

Luc Pattyn [Forum Guidelines] [My Articles]

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[Matthew Butler 0]

I've never used metafiles. ...but I suppose that would give an error. Do people still use wmf/emf? I've always concidered them quite an old (and outdated) format.

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Matthew Butler

[Luc Pattyn]

M. Butler wrote:

Do people still use wmf/emf?

I don't know. My point is: (Bitmap)Image.FromFile("test.WMF") could throw since there is a difference between Bitmap and Image classes, so I prefer either the constructor approach (hoping it is not too expensive) or an "is Bitmap" test (C#). :)

Luc Pattyn [Forum Guidelines] [My Articles]

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this months tips: - use PRE tags to preserve formatting when showing multi-line code snippets - before you ask a question here, search CodeProject, then Google

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[Mark Salsbery]

Good example of why casts are dangerous. C# really allows casts? hehe

Mark Salsbery Microsoft MVP - Visual C++ :java: