Check if GDI+ does not support the pixel format of the file

Asked Sep 27 '17 at 12:51

Active Sep 27 '17 at 12:55

Viewed 526 times

I'm loading a picture from a file and then create a new Bitmap. Everything works fine but I want to secure more my app.

I'm using Bitmap Constructor (Stream)

public Bitmap(
    Stream stream
)

I would like to check if GDI+ does not support the pixel format of the file.

public static Image FromFile(
    string filename,
    bool useEmbeddedColorManagement
)

Image.FromFile throws OutOfMemoryException if GDI+ does not support the pixel format of the file.

But I would like to avoid using Image.FromFile, because I won't allocate memory etc.

So the question is: how can I check if GDI+ does not support the pixel format of the file.

Thank you!

edited Sep 27 '17 at 12:55

Aleksei Budiak

asked Sep 27 '17 at 12:51

mskuratowski

1

You can use `try/catch`. I doubt you didn't thought about it, but it's not clear why you can't use it. – Sinatr Sep 27 '17 at 12:58
1

It did not *actually* run out of memory. So nothing to worry about. Why these exceptions are bogus is explained in [this post](https://stackoverflow.com/a/2610506/17034). – Hans Passant Sep 27 '17 at 13:25
@Sinatr I worry about GDI+ and pixel format. – mskuratowski Sep 27 '17 at 14:55
@HansPassant The same issue as above. – mskuratowski Sep 27 '17 at 14:55
How far up do I need to look?? If you don't understand the post I linked then just assume that *nothing to worry about* applies. – Hans Passant Sep 27 '17 at 14:58
But is there any way to check GDI+ format? – mskuratowski Oct 02 '17 at 08:32
@Cieja Just do a try-catch around loading the image from file, as Sinatr said from the start. And make sure to dispose the image if the load does succeed. – Nyerguds Mar 08 '18 at 22:14

0 Answers0