How to get image size from base64 in C#?
Is it possible to do at all?
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Depends entirely on what image format you're using. Please be more specific – Rob Jan 18 '17 at 23:02
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@Rob It is PNG and JPG – NoWar Jan 18 '17 at 23:02
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@Gigabyte You can guess the answer, sure. But it'll just be a guess, which is a problem. From the original post, the following is unknown: Why does base64 matter? (The question may be how to read a base64 into an image format). What image format are you using? What do you mean by size? Dimensions? File size? – Rob Jan 18 '17 at 23:09
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Not directly as it depends on what data/format is encoded in the Base64 string. A rough approach would be (code not tested):
byte[] image = Convert.FromBase64String("Your Base64 string here");
using (var ms = new MemoryStream(image))
{
Image img = Image.FromStream(ms);
return new Tuple<int, int>(img.Width, img.Height); // or some other data container
}
Note: Image class comes from System.Drawing.
See also the MSDN System.Drawing.Image class' documentation documentation.
Gigabyte
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1What makes you think this is Dimensions and not Size? OP should know to specify dimensions not size if that's what he was after. – Jeremy Thompson Jan 18 '17 at 23:08
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@JeremyThompson You're right, I was a bit too fast there. Will update accordingly. – Gigabyte Jan 18 '17 at 23:09