convert byte[] to image

Question

I have uploaded an Image in to my database as byte[] and now im trying to display it out.

There was an error - Argument Exception was unhandled by user code

Answer 1

One problem could be the following one:

bytes = imgBinary.ReadBytes((Int32)imgStream.Length);

What if the stream Length is more than Int32.MaxValue as it's a Int64? Maybe you are truncating your image... use this method instead to read the stream to a buffer:

public static Byte[] ReadStream(Stream input)
{
    Byte[] buffer = new Byte[(16 * 1024)];

    using (MemoryStream stream = new MemoryStream())
    {
        Int32 read;

        while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
            stream.Write(buffer, 0, read);

        return stream.ToArray();
    }
}

protected void bn_upload_Click(object sender, EventArgs e)
{
    lbl_msg.Text = "";

    Byte[] bytes = ReadStream(FileUpload1.PostedFile.InputStream);
    String src = byteArrayToImage(bytes);

    if (!src.Equals(""))
        Image1.ImageUrl = "~/Temp/UploadedImage.jpg";
}