Converting a method to C#

Question

Could somebody convert this method to C# please (Currently java):

     public static void load(Map mapData) throws IOException {
        // a much simpler way than TeleNubby's
        logger.info("Reading mapdata...");
        DataInputStream in = new DataInputStream(new FileInputStream("data/mapdata/packed.dat"));
        int useableMapdata = 0;
        while(in.available() >= 20) {
            int area = in.readInt();
            int[] parts = new int[4];
            for(int j = 0; j < 4; j++) {
                parts[j] = in.readInt();
            }
            if(parts[0] != 0 && parts[1] != 0 && parts[2] != 0 && parts[3] != 0) {
                useableMapdata++;
            }
            mapData.put(area, parts);
        }
        logger.info("Loaded mapdata.");
    }