Master.CanYinWu.DAL/ArticleColumnDAL.cs

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using Dapper;
using Master.CanYinWu.Entity;
using Master.CanYinWu.Entity.ViewModel;
using Master.CanYinWu.Utility;
using System;
using System.Collections.Generic;
using System.Data;
using System.Text;
using System.Threading.Tasks;

namespace Master.CanYinWu.DAL
{
    public class ArticleColumnDAL
    {
        private IDbConnection conn;

        #region 栏目列表
        /// <summary>
        /// 栏目列表
        /// </summary>
        /// <param name="pageIndex"></param>
        /// <param name="pageSize"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<Tuple<IEnumerable<ArticleColumnViewModel>, int>> GetList(int pageIndex, int pageSize, string key)
        {
            StringBuilder sb = new StringBuilder(@"select tab.*,(select ColumnName from ArticleColumn as atc where atc.ArticleColumnId=tab.ParentId)as ColumnParentName
                                                from(
                                                select * from(select *,ROW_NUMBER() over (order by ArticleColumnId asc) as  rownumber  from  ArticleColumn where IsDelete =0");
            DynamicParameters dp = new DynamicParameters();
            dp.Add("PageIndex", pageIndex);
            dp.Add("PageSize", pageSize);
            StringBuilder sqlTotal = new StringBuilder(@"select count(1)  from ArticleColumn where IsDelete =0");
            DynamicParameters dpTotal = new DynamicParameters();
            if (!string.IsNullOrEmpty(key))
            {
                sb.Append(" and ColumnName like '%'+@Key+'%' ");
                sqlTotal.Append(" and ColumnName like '%'+@Key+'%' ");
                dp.Add("Key", key);
                dpTotal.Add("Key", key);
            }
            sb.Append(" )as a where rownumber BETWEEN(((@PageIndex - 1) * @PageSize) + 1) and @PageIndex * @PageSize)as tab ");
            using (conn = ConnectionFactory.Connection())
            {
                var query = await conn.QueryAsync<ArticleColumnViewModel>(sb.ToString(), dp);
                var total = await conn.ExecuteScalarAsync<int>(sqlTotal.ToString(), dpTotal);
                return new Tuple<IEnumerable<ArticleColumnViewModel>, int>(query, total);
            }
        }
        #endregion

        #region 查询父栏目列表
        /// <summary>
        /// 查询父栏目列表
        /// </summary>
        /// <returns></returns>
        public async Task<Tuple<IEnumerable<ArticleColumn>, int>> GetParentColumnList()
        {
            string sql = "select * from ArticleColumn where ParentId=0 and IsDelete=0 order by ArticleColumnId asc";