Convert Object or array to System.Drawing.Image

Question

Hello Guys ,
i want to know if is there any way to convert object or array of bytes/int to System.Drawing.Image !

Answer 1

Hello,

Welcome to our Microsoft Q&A platform!

I think you should use like this:

byte [] imageArray // is your data  
MemoryStream mStream = new MemorySteram ();  
mStream.write(imageArray,0,imageArray.Length);  
Image img = Image.FromStream(mStream);  
img.save(filelocation);  
  
Bitmap bitmapimg = BitmapFactory.BitmapFactory.DecodeStream(mStream);   
// if you want to use Bitmap  

For how to use bitmap, you can refer to the following code:

  var bitmap = BitmapFactory.BitmapFactory.DecodeStream(stream);  
var path = Path.Combine(GetExternalFilesDir(Environment.DirectoryDocuments).AbsolutePath, "sameImagePath.jpg");  
if (!File.Exists(path))  
{  
    using (var filestream = new FileStream(path, FileMode.Create))  
    {  
        if (bitmap.Compress(Bitmap.CompressFormat.Jpeg, 50, filestream))  
        {  
            filestream.Flush();  
        }  
        else {} // handle failure case...  
    }  
}  
bitmap.Recycle();  
bitmap.Dispose();  

Refer:https://stackoverflow.com/questions/43899497/create-image-file-from-byte-array-in-documents-xamarin-android

And there are some similar threads about this, you can check:
https://stackoverflow.com/questions/49721271/byte-array-to-image-using-c-sharp-in-xamarin
https://stackoverflow.com/questions/9173904/byte-array-to-image-conversion

Best Regards,

Jessie Zhang

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Answer 2

An image is more than just an array of bytes. Can you convert a byte array to an image? Yes provided the byte array is actually a correctly formatted image. You cannot however take an arbitrary byte array and convert it to an image. Ultimately you need to start with a valid image. At some point it is OK to convert that to a byte array (such as for serializing over the network) and then convert it back to an image on the other side.