using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using wpf_connection3; namespace wpf_connection3 { public interface IDataProvider { IEnumerable getProduct(int pageNum); int getProductCount(); void setOrder(string condition); List getProductTypes(); void clearFilter(); void addFilter(string name, object value); void setMinCostForAgent(decimal minCost, int[]ids); } }