BookShop/BLL/BookShop_Group.cs

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using System; 
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Collections.Generic; 

using BookShop.Model;
using BookShop.Data;


namespace BookShop
{

	/// <summary>
    ///	用户组信息表
    ///	BLL逻辑层 BookShop_Group
    /// 主要完成对DAL层的调用
    ///	2013-07-22 20:53:20
	/// </summary>
	public class GroupBLL
	{
	
		/// <summary>
        /// 全局变量
        /// </summary>
        private static	GroupProvider DAL = GroupProvider.GetInstance();
       
		
		/// <summary>
        /// 根据条件判断是否存在
        /// </summary>
        /// <param name="condition">条件</param>
        /// <returns></returns>
		public static bool ExistGroup(string condition)
		{
			return DAL.ExistGroup(condition);
		}
		
		/// <summary>
        /// 增加一条记录
        /// </summary>
        /// <param name="model">类实体</param>
        /// <returns></returns>
		public static int AddGroup(Model.Group model)
		{
			return DAL.AddGroup( model);
		}

		/// <summary>
		/// 更新一条数据
		/// </summary>
		/// <param name="model">类实体</param>
		/// <returns></returns>
		public static bool UpdateGroup(Model.Group model)
		{
			return DAL.UpdateGroup(model);
		}
		
		/// <summary>