SqlHelper类

来源：互联网发布：网络型数据采集机编辑：程序博客网时间：2024/05/21 07:48
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Configuration;using System.Data;using System.Data.SqlClient;namespace SqlHelper{    /// <summary>    /// Copyright (C) 2015-2016 GVegetables    /// Create 20150906 GVegetables    /// 数据访问基础类(基于SqlServer)    /// </summary>    public static class SqlHelper    {        /// <summary>        /// 连接字符串        /// </summary>        public static string connString = ConfigurationManager.ConnectionStrings["myConn"].ConnectionString;        /// <summary>        /// 把insert/update/ select        /// </summary>        /// <param name="sql"></param>        /// <param name="cmdType"></param>        /// <param name="pms"></param>        /// <returns></returns>        public static int ExecuteNonQuery(string sql, CommandType cmdType, params SqlParameter[] pms)        {            using (SqlConnection conn = new SqlConnection(connString))            {                using (SqlCommand cmd = new SqlCommand(sql, conn))                {                    cmd.CommandType = cmdType;                    if (pms != null)                    {                        cmd.Parameters.AddRange(pms);                    }                    conn.Open();                    return cmd.ExecuteNonQuery();                }            }        }         /// <summary>        /// 执行返回单个值的方法        /// </summary>        /// <param name="sql"></param>        /// <param name="cmdType"></param>        /// <param name="pms"></param>        /// <returns></returns>        public static object ExecuteSclar(string sql, CommandType cmdType, params SqlParameter[] pms)        {            using (SqlConnection conn = new SqlConnection(connString))            {                using (SqlCommand cmd = new SqlCommand(sql, conn))                {                    cmd.CommandType = cmdType;                    if (pms != null)                    {                        cmd.Parameters.AddRange(pms);                    }                    conn.Open();                    return cmd.ExecuteScalar();                }            }        }         /// <summary>        /// 返回SqlDataReader方法        /// </summary>        /// <param name="sql"></param>        /// <param name="cmdType"></param>        /// <param name="pms"></param>        /// <returns></returns>               public static SqlDataReader ExecuteReader(string sql, CommandType cmdType, params SqlParameter[] pms)               {                      SqlConnection conn = new SqlConnection(connString);                       using (SqlCommand cmd = new SqlCommand(sql, conn))                       {                           cmd.CommandType = cmdType;                           if (pms != null)                           {                               cmd.Parameters.AddRange(pms);                           }                          try                            {                                           conn.Open();                               return cmd.ExecuteReader(CommandBehavior.CloseConnection);                           }                          catch                           {                              conn.Close();                              conn.Dispose();                              throw;                           }                       }               }        /// <summary>        /// 返回DataTable        /// </summary>        /// <param name="sql"></param>        /// <param name="cmdType"></param>        /// <param name="pms"></param>        /// <returns></returns>        public static DataTable ExecuteTable(string sql,CommandType cmdType,params SqlParameter[] pms)        {            DataTable dt = new DataTable();            using (SqlDataAdapter adapter = new SqlDataAdapter(sql,connString))            {                adapter.SelectCommand.CommandType = cmdType;                if (pms != null)                {                    adapter.SelectCommand.Parameters.AddRange(pms);                }                adapter.Fill(dt);                return dt;            }        }    }}
备注：自己用的数据库访问基础类，现在功能还比较弱，一直会持续更新。
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