DAL/Contents.cs

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

		/// <summary>
		/// 得到最前的内容页
		/// </summary>
        public string GetCallIndex()
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select top 1 CallIndex from dt_Contents");
            strSql.Append(" order by SortId asc,Id desc");
            object obj = DbHelperSQL.GetSingle(strSql.ToString());
            if (obj != null)
            {
                return obj.ToString();
            }
            return null;
        }

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

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

        /// <summary>
        /// 是否存在该记录
        /// </summary>
        public bool Exists(string callIndex)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(0) from dt_Contents");
            strSql.Append(" where CallIndex=@CallIndex ");
            SqlParameter[] parameters = {
					new SqlParameter("@CallIndex", SqlDbType.NVarChar,50)};
            parameters[0].Value = callIndex;

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