The Weird and The Wonderful

for(int y = 0; y < bmp.biHeight; y=y+3){
	for(int x = 0; x < bmp.biWidth; x=x+3){
		for(int i = 0; i < 9; i++){
			int yp=0, xp=0;
			get_pixel(x+xp,y+yp,blank[i]); 
			if(xp<3)
				xp++;
			else{
				xp = 0;
				yp++;
		}}
		avg(blank, Merge, 9);
		set_pixel(x,y,Merge);
		for(int i = 0; i < 9; i++){
			blank[i].rgbtBlue=0;
			blank[i].rgbtGreen=0;
			blank[i].rgbtRed=0;
		}
		clear_pixel(Merge);
		yp=0, xp=0;
}}

public static ArrayList GetAll(CDataAccess db)
{
    ArrayList dataObjects = new ArrayList();
    ArrayList rtn = new ArrayList();
    try
    {
        dataObjects = Data.ExchangeRate.GetAll(db);
        IEnumerator ie = dataObjects.GetEnumerator();
        while (ie.MoveNext())
        {
            using (ExchangeRate businessExchangeRate = new ExchangeRate())
            {
                using (Data.ExchangeRate currentData = ie.Current as Data.ExchangeRate)
                {
                    businessExchangeRate._dataAccess = currentData;
                    rtn.Add(businessExchangeRate);
                }
            }
        }
    }
    catch (Exception ex)
    {
        throw new Exception("An error occurred while calling the GetAll() method.", ex);
    }
    finally
    {
    }
    return rtn;
}