DAL/Downloads.cs

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using System;
using System.Collections.Generic;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using DBUtility;
namespace DAL
{
	/// <summary>
	/// 数据访问类:Downloads
	/// </summary>
	public partial class Downloads
	{
		public Downloads()
		{}
		#region  Method

		/// <summary>
		/// 得到最大ID
		/// </summary>
        public int GetMaxId()
        {
            return DbHelperSQL.GetMaxID("Id", "dt_Downloads");
        }

		/// <summary>
		/// 是否存在该记录
		/// </summary>
		public bool Exists(int Id)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select count(1) from dt_Downloads");
			strSql.Append(" where Id=@Id ");
			SqlParameter[] parameters = {
					new SqlParameter("@Id", SqlDbType.Int,4)};
			parameters[0].Value = Id;

			return DbHelperSQL.Exists(strSql.ToString(),parameters);
		}

        /// <summary>
        /// 返回数据总数(分页用到)
        /// </summary>
        public int GetCount(string strWhere)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(*) as H ");
            strSql.Append(" from dt_Downloads ");
            if (strWhere.Trim() != "")
            {
                strSql.Append(" where " + strWhere);
            }
            return Convert.ToInt32(DbHelperSQL.GetSingle(strSql.ToString()));
        }

        /// <summary>
        /// 返回该类别下的所有记录总数(分页用到)
        /// </summary>
        public int GetCount(string strWhere, int classId, int kindId)
        {