DAL/AchieveDAL/NewsTypeDAL.cs

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using AchieveCommon;
using AchieveEntity;
using AchieveInterfaceDAL;
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Text;

namespace AchieveDAL
{
    public class NewsTypeDAL : INewsTypeDAL
    {
        public bool Exists(string name)
        {
            string sql = "select count(1)num from tbNewsType where ftypename = @ftypename";
            SqlParameter[] parameters = {
                        new SqlParameter("@ftypename", SqlDbType.NVarChar,50)
            };
            parameters[0].Value = name;
            DataTable dt = SqlHelper.GetDataTable(SqlHelper.connStr, CommandType.Text, sql, parameters);
            if (int.Parse(dt.Rows[0]["num"].ToString()) > 0)
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        /// 增加一条数据
        /// </summary>
        public int Add(NewsTypeEntity model)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("insert into tbNewsType(");
            strSql.Append("ftypename,fsort,CreateBy,CreateTime,UpdateBy,UpdateTime");
            strSql.Append(") values (");
            strSql.Append("@ftypename,@fsort,@CreateBy,@CreateTime,@UpdateBy,@UpdateTime");
            strSql.Append(") ");
            strSql.Append(";select @@IDENTITY");
            SqlParameter[] parameters = {
                        new SqlParameter("@ftypename", SqlDbType.NVarChar,50) ,
                        new SqlParameter("@CreateBy", SqlDbType.NVarChar,50) ,
                        new SqlParameter("@CreateTime", SqlDbType.DateTime) ,
                        new SqlParameter("@UpdateBy", SqlDbType.NVarChar,50) ,
                        new SqlParameter("@UpdateTime", SqlDbType.DateTime),
                        new SqlParameter("@fsort", SqlDbType.Int)
            };

            parameters[0].Value = model.ftypename;
            parameters[1].Value = model.CreateBy;
            parameters[2].Value = model.CreateTime;
            parameters[3].Value = model.UpdateBy;
            parameters[4].Value = model.UpdateTime;
            parameters[5].Value = model.fsort;
            object obj = Convert.ToInt32(SqlHelper.ExecuteScalar(SqlHelper.connStr, CommandType.Text, strSql.ToString(), parameters));
            return Convert.ToInt32(obj);