DAL/Orders.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:Orders
	/// </summary>
	public partial class Orders
	{
        public Orders()
		{}
		#region  Method

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

        /// <summary>
        /// 是否存在该记录
        /// </summary>
        public bool Exists(int Id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from Orders");
            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 Orders ");
            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(Model.Orders model)
        {