SqlHelper.cs

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

    public class SqlHelper
    {
        public static readonly string conString = ConfigurationManager.ConnectionStrings["sqlCon"].ConnectionString;

        //增删改
        public static bool ExeNonQuery(string sql, CommandType type, params SqlParameter[] lists)
        {
            bool bFlag = false;
            using (SqlConnection con = new SqlConnection(conString))
            {
                SqlCommand cmd = new SqlCommand();
                cmd.Connection = con;
                cmd.CommandText = sql;
                cmd.CommandType = type;
                if (lists!=null)
                {
                    foreach (SqlParameter p in lists)
                    {
                        cmd.Parameters.Add(p);
                    }
                }
                try
                {
                    if (con.State == ConnectionState.Closed)
                    {
                        con.Open();
                    }
                    int result = cmd.ExecuteNonQuery();
                    if (result > 0)
                    {
                        bFlag = true;
                    }

                }
                catch { ;}
            }
            return bFlag;
        }

        //查．读
        public static SqlDataReader ExeDataReader(string sql, CommandType type, params SqlParameter[] lists)
        {
            SqlConnection con = new SqlConnection(conString);
            SqlCommand cmd = new SqlCommand();
            cmd.Connection = con;
            cmd.CommandText = sql;
            cmd.CommandType = type;

            if (con.State == ConnectionState.Closed)
            {
                con.Open();
            }