MySQLHelper

本人手写的SQLHelper。。

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

namespace MyLibrary.SQLServer
{
    /// <summary>
    /// Sqlhelper完成数据库的操作，封装增删改查的方法
    /// </summary>
    public class SQLHelper
    {
        /// <summary>
        /// 连接字符串，通过配置文件导入数据
        /// </summary>
        static string connstr = ConfigurationManager.ConnectionStrings["sqlconn"].ConnectionString;

        // 执行ExecuteNonQuert
        public static int ExecuteNonQuery(string cmdText, CommandType cmdType, params SqlParameter[] paras)
        {
            using(SqlConnection conn = new SqlConnection(connstr))
            {
                using(SqlCommand cmd = new SqlCommand(cmdText,conn))
                {
                    cmd.CommandType = cmdType;
                    if (paras !=null)
                    {
                        cmd.Parameters.AddRange(paras);
                    }
                    conn.Open();
                    return cmd.ExecuteNonQuery();
                }
            }
        }

        // 执行ExecuteScalar
        public static object ExecuteScalar(string cmdText,CommandType cmdType,params SqlParameter[] paras )
        {
            using (SqlConnection conn = new SqlConnection(connstr))
            {
                using (SqlCommand cmd = new SqlCommand(cmdText, conn))
                {
                    cmd.CommandType = cmdType;
                    if (paras !=null)
                    {
                        cmd.Parameters.AddRange(paras);
                    }
                    conn.Open();
                    return cmd.ExecuteScalar();
                }
            }
        }

        // 执行ExecuteReader
        public static SqlDataReader ExecuteReader(string cmdText,CommandType cmdType, params SqlParameter[] paras)
        {
            SqlConnection conn = new SqlConnection(connstr);
                using (SqlCommand cmd = new SqlCommand(cmdText, conn))
                {
                    cmd.CommandType = cmdType;
                    if (paras != null)
                    {
                        cmd.Parameters.AddRange(paras);
                    }
                    conn.Open();
                    return cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection);
                }
        }

        // 执行sqlDataAdopter
        public static DataSet GGetDataSet(string cmdText,CommandType cmdType,params SqlParameter[] paras)
        {
            DataSet ds = new DataSet();
            using (SqlDataAdapter sda = new SqlDataAdapter(cmdText, connstr))
            {
                sda.SelectCommand.CommandType = cmdType;

                if (paras != null)
                {
                    sda.SelectCommand.Parameters.AddRange(paras);
                }
                sda.Fill(ds);
            }
            return ds;
        }

        //ExecuteNonQuery 
        public static int ExecuteNonQuery(string cmdText, params SqlParameter[] paras)
        {
            return ExecuteNonQuery(cmdText, CommandType.Text, paras);
        }
        // ExecuteNonQuerysp
        public static int ExecuteNonQuerysp(string cmdText, params SqlParameter[] paras)
        {
            return ExecuteNonQuery(cmdText, CommandType.StoredProcedure, paras);
        }
        //ExecuteScalar
        public static object ExecuteScalar(string cmdText, params SqlParameter[] paras)
        {
            return ExecuteScalar(cmdText, CommandType.Text, paras);
        }
        //ExecuteScalarsp
        public static object ExecuteScalarsp(string cmdText, params SqlParameter[] paras)
        {
            return ExecuteScalar(cmdText, CommandType.StoredProcedure, paras);
        }
        //ExecuteReader
        public static SqlDataReader ExecuteReader(string cmdText, params SqlParameter[] paras)
        {
            return ExecuteReader(cmdText, CommandType.Text, paras);
        }
        //ExecuteReadersp
        public static SqlDataReader ExecuteReadersp(string cmdText, params SqlParameter[] paras)
        {
            return ExecuteReader(cmdText, CommandType.StoredProcedure, paras);
        }
        //GGetDataSetsp
        public static DataSet GGetDataSet(string cmdText, params SqlParameter[] paras)
        {
            return GGetDataSet(cmdText, CommandType.Text, paras);
        }
        //GGetDataSetsp
        public static DataSet GGetDataSetsp(string cmdText, params SqlParameter[] paras)
        {
            return GGetDataSet(cmdText, CommandType.StoredProcedure, paras);
        }

    }
}