DAL/Downloads.cs

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

using System;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using System.Data.OleDb;
using Maticsoft.DBUtility;//Please add references
namespace cosmos.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 DbHelperOleDb.GetMaxID("Id", "tb_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 tb_Downloads");
            strSql.Append(" where Id=@Id");
           
            OleDbParameter[] parameters = {
                    new OleDbParameter("@Id",OleDbType.Integer,4)
};
            parameters[0].Value = Id;

            return DbHelperOleDb.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 tb_Downloads ");
            if (strWhere.Trim() != "")
            {
                strSql.Append(" where " + strWhere);
            }
            return Convert.ToInt32(DbHelperSQL.GetSingle(strSql.ToString()));
        }
        /// <summary>
        /// 增加一条数据
        /// </summary>
        public int Add(cosmos.Model.Downloads model)