how can I get image size (w x h) using Stream

Question

I have this code i am using to read uploaded file, but i need to get size of image instead but not sure what code can i use

HttpFileCollection collection = _context.Request.Files;             for (int i = 0; i < collection.Count; i++)             {                 HttpPostedFile postedFile = collection[i];                  Stream fileStream = postedFile.InputStream;                 fileStream.Position = 0;                 byte[] fileContents = new byte[postedFile.ContentLength];                 fileStream.Read(fileContents, 0, postedFile.ContentLength); 

I can get the file right but how to check it's image (width and size) sir ?

Answer 1

First you have to write the image:

System.Drawing.Image image = System.Drawing.Image.FromStream (new System.IO.MemoryStream(byteArrayHere)); 

and afterwards you have the :

image.Height.ToString();  

and the

image.Width.ToString(); 

note: you might want to add a check to be sure it's an image that was uploaded?