protected void btnFilter_Click(object sender, EventArgs e) { int minPrice = int.Parse(Request.Form["pricemin"]); int maxPrice = int.Parse(Request.Form["pricemax"]); var averagePriceList = _productDal.GetAveragePriceList(minPrice, maxPrice); productslv.DataSource = averagePriceList; productslv.DataBind(); lvGridProduct.DataSource = averagePriceList; lvGridProduct.DataBind(); }