ASP.NET IMAGE 를 byte 배열값으로 가져오기

public byte[] GetBytes(string path)
{
    FileStream fs=null;
    BinaryReader br=null;
    try
    {
        byte[] buffer = null;
        fs = new FileStream(Server.MapPath(path), FileMode.Open, FileAccess.Read);
        br = new BinaryReader(fs);
        long numBytes = new FileInfo(Server.MapPath(path)).Length;
        buffer = br.ReadBytes((int)numBytes);
        br.Close();
        fs.Close();
        return buffer;
    }
    catch (Exception err)
    {
        throw new Exception("SaveFileIntoDatabase: " + err.Message);
    }
}

byte[] fileData = GetBytes(tempFilename);