新闻类别表业务类

/*
 * 创建人：李要南
 * 创建时间：2008-12-7 4:22
 * 说明：新闻类别表业务类
 * 版权所有：李要南
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using Model;
using DAL;
namespace BLL
{
    public class CategoryManager
    {
        public CategoryDAL cdal = null;
        public CategoryManager()
        {
            cdal = new CategoryDAL();
        }

        #region 取出当前所有新闻分类
        /// <summary>
        /// 取出当前所有新闻分类
        /// </summary>
        /// <returns></returns>
        public DataTable SelectAll()
        {
            return cdal.SelectAll();
        }
        #endregion

        #region 增加类别
        /// <summary>
        /// 增加类别
        /// </summary>
        /// <param name="caName">类别名称</param>
        /// <returns></returns>
        public bool Insert(string caName)
        {
            return cdal.Insert(caName);
        }
        #endregion

        #region 修改类别
        /// <summary>
        ///  修改类别
        /// </summary>
        /// <param name="ca"></param>
        /// <returns></returns>
        public bool Update(Category ca)
        {
            return cdal.Update(ca);
        }
        #endregion

        #region 删除类别
        /// <summary>
        /// 删除类别
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>

        public bool Delete(string id)
        {
            return cdal.Delete(id);
        }
        #endregion

        #region 判断类别名称是否已存在
        /// <summary>
        /// 判断类别名称是否已存在
        /// </summary>
        /// <param name="caName">类别名称</param>
        /// <returns></returns>
        public bool IsExists(string caName)
        {
            return cdal.IsExists(caName);
        }
        #endregion

    }
}