AbstractSqlHelper

using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.Common;
using System.Configuration;


namespace TSMS.Common
{ //定義一個抽象類
    public abstract class AbstractSqlHelper
    {   
        private SqlConnection conn = null;//初始化一個sql連接
        /// <summary>
        /// 獲取連接字符串並打開
        /// </summary>
        public void GetConnection()
        {   //private static string conStr = ConfigurationManager.ConnectionStrings["sqlstr"].ConnectionString;
            string strCon = ConfigurationManager.ConnectionStrings["sqlstr"].ConnectionString;
            conn = new SqlConnection(strCon);
            conn.Open();
            if (conn.State!=ConnectionState.Open)
            {
                conn.Close();
                conn.Dispose();
            }
        }
        /// <summary>
        /// 關閉連接
        /// </summary>
        public void CloseConnection()
        {
            if (conn!=null)
            {
                conn.Close();
                conn.Dispose();
            }
        }
        /// <summary>
        /// 設置需要執行的存儲過程或語句
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="cmdtype"></param>
        /// <param name="pars"></param>
        /// <returns></returns>
        #region 設置需要執行的存儲過程或語句
        public SqlCommand GetCommand(string sql, CommandType cmdtype, params SqlParameter[] pars)
        {
            GetConnection();
            SqlCommand cmd = conn.CreateCommand();
            cmd.CommandType = cmdtype;
            cmd.CommandText = sql;
            if (pars != null)
            {
                cmd.Parameters.AddRange(pars);
            }
            return cmd;


        }
        public SqlCommand GetCommand(string sql, CommandType cmdtype, List<SqlParameter> pars)
        {
            GetConnection();
            SqlCommand cmd = conn.CreateCommand();
            cmd.CommandType = cmdtype;
            cmd.CommandText = sql;
            foreach (SqlParameter s in pars)
            {
                cmd.Parameters.Add(s);
            }
            return cmd;
        } 
        #endregion
        /// <summary>
        /// 執行非查詢
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="cmdtype"></param>
        /// <param name="parameters"></param>
        /// <returns></returns>
        public abstract bool ExecuteNonQurey(string sql, CommandType cmdtype, params SqlParameter[] parameters);
        /// <summary>
        /// 查詢表通過參數
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="cmdtype"></param>
        /// <param name="parameters"></param>
        /// <returns>DataSet</returns>
        public abstract DataSet GetDataSet(string sql, CommandType cmdtype, params SqlParameter[] parameters);
        /// <summary>
        /// 查詢表通過list泛型集合
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="cmdtype"></param>
        /// <param name="list"></param>
        /// <returns></returns>
        public abstract DataSet GetDataSet(string sql, CommandType cmdtype, List<SqlParameter> list);
        /// <summary>
        ///  查詢表通過參數
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="cmdtype"></param>
        /// <param name="parameters"></param>
        /// <returns>DataTable</returns>
        public abstract DataTable GetDataTable(string sql, CommandType cmdtype, params SqlParameter[] parameters);
        public abstract object GetSingleData(string sql, CommandType cmdtype, params SqlParameter[] parameters);
        public abstract SqlDataReader GetDataReader(string sql,CommandType cmdtype,params SqlParameter[] parameters);
    


    }
}