Question

I’m desperately trying to save an image to an SQL database and then load it on my WP. All of the guides online say to convert the image to a Byte array, store it and then load it back into an image.

So far, I’ve been able to save the image into a Byte array using:

    public static byte[] ConvertToBytes(Stream photoStream)   
    {   
        byte[] a = new Byte[photoStream.Length];   
        for (int i = 0; i < photoStream.Length; i++)   
        {   
            a[i] = (Byte)photoStream.ReadByte();   
        }   
        return (a);
    } 

This generates a Byte array that is similar in size to the image I’m saving.

The suggested way to load images is:

    1 public static BitmapImage ConvertToImage(Byte[] inputBytes)   
    2 {   
    3     MemoryStream stream = new MemoryStream(inputBytes);   
    4     BitmapImage image = new BitmapImage();   
    5     image.SetSource(stream);   
    6     return (image);   
    7 }  

This doesn’t work.

I get this error (on line 5):
“Unspecified error”

Does anybody have any idea how to fix this or can suggest an alternative method/code?

I know there is information online – i can assure you that i have searched long and hard for a working method and been able to make nothing work.

Any help would be much appreciated!

Answer 1

I managed to solve this using:

public static byte[] ConvertToBytes(String imageLocation)
    {
        StreamResourceInfo sri = Application.GetResourceStream(new Uri(imageLocation, UriKind.RelativeOrAbsolute));
        BinaryReader binary = new BinaryReader(sri.Stream);

        byte[] imgByteArray = binary.ReadBytes((int)(sri.Stream.Length));

        binary.Close();
        binary.Dispose();
        return imgByteArray;
    }

    public static WriteableBitmap ConvertToImage(Byte[] inputBytes)
    {
        MemoryStream ms = new MemoryStream(inputBytes);
        WriteableBitmap img = new WriteableBitmap(400, 400);

        img.LoadJpeg(ms);

        return (img);
    }

Thanks for all your help guys.