1using System;
 2using System.Data;
 3using MyShop.Model;
 4namespace MyShop.IDAL
 5...{
 6    public interface ICategory
 7    ...{
 8        int Add(CategoryInfo model);
 9        int Delete(string filter);
10        bool Exist(string filter);
11        DataSet GetDataSet();
12        DataSet GetDataSet(string filter);
13        CategoryInfo GetModel(DataRow dr);
14        DataSet Query(string sql);
15        int Update(CategoryInfo model, string filter);
16        DataSet KeywordsSearch(string field, string keywords);
17    }
18}
19