转载自:http://blog.csdn.net/fengqingtao2008/article/details/17399247 using System; using System.Data; using System.Xml; using System.Data.SqlClient; using System.Collections; using System.Configuration; namespace BookDAL { /// <summary> /// SqlServer数据

一,微软SQLHelper.cs类 中文版: using System; using System.Data; using System.Xml; using System.Data.SqlClient; using System.Collections; namespace Classbao.Data { /// <summary> /// SqlServer数据访问帮助类 /// </summary> public sealed partial class SqlHelper

using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Configuration; using System.Data; using System.Data.SqlClient; using System.Xml; using System.Collections; namespace LiuYanBanT { public class SqlHelper

using System; using System.Data; using System.Xml; using System.Data.SqlClient; using System.Collections; using System.Configuration; //微软SQLHelper.cs类 中文版 namespace Sales.DAL { /// <summary> /// SqlServer数据访问帮助类 /// </summary> public sealed c

代码 Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 1 // =============================================================================== // Microsoft Data Access Application Block for .NET // http://m

SQLHelper.cs using System; using System.Data; using System.Configuration; using System.Data.SqlClient; namespace DAL { public class SQLHelper { #region 私有字段 //获取连接字符串 private static string ConString = ConfigurationManager.ConnectionStrings["ConString

自用SqlHelper.cs类,此类来自软谋教育徐老师课程SqlHelper.cs! using System; using System.Collections; using System.Collections.Generic; using System.Configuration; using System.Data; using System.Data.SqlClient; using System.Linq; using System.Web; namespace PROJECT201

using System; using System.Data; using System.Xml; using System.Data.SqlClient; using System.Collections; using System.Configuration; namespace BookDAL { /// <summary> /// SqlServer数据访问帮助类 /// </summary> public sealed class SqlHelper { #region

数据库操作类真的没有必要自己去写,因为成熟的类库真的非常完善了,拿来直接用就好,省时省力. 本文就为大家介绍微软官方的程序PetShop4.0中的SqlHelper类,先来做一下简单的介绍,PetShop是一个范例,微软用它来展示.Net企业系统开发的能力. 那SqlHelper中封装了哪些方法呢? 里面的函数一堆,常用的就那几个,无非就是增删改查嘛,来看下几种常用的函数: 1.ExecuteNonQuery 执行增删改2.ExecuteReader 执行查询3.ExecuteScalar 返回

public static class SqlHelper { public static object FromDbValue(object value) { if (value == DBNull.Value) { return null; } else { return value; } } public static object ToDbValue(object value) { if (value == null) { return DBNull.Value; } else { re

using System; using System.Data; using System.Xml; using System.Data.SqlClient; using System.Collections; using System.Configuration; namespace BookDAL { /// <summary> /// SqlServer数据访问帮助类 /// </summary> public sealed class SqlHelper { #region

using System; using System.Collections.Generic; using System.Text; using System.Collections; using System.Data; using System.Data.SqlClient; using System.Configuration; namespace HelloWinForm.DBUtility { class SQLHelper { #region 通用方法 // 数据连接池 privat

using System; using System.Collections.Generic; using System.Text; using System.Configuration; using System.Data; using System.Data.SqlClient; using System.Collections; using System.Data.Common; namespace SWDataDB.DAL { public class SQLHelper { /// <

using System; using System.Collections.Generic; using System.Configuration; using System.Data; using System.Data.SqlClient; using System.Linq; using System.Text; using System.Threading.Tasks;   namespace RuPengWang.DAL {     public class SqlHelper   

using System; using System.Data; using System.Xml; using System.Data.SqlClient; using System.Collections; namespace Book.DAL { /// <summary> /// SqlServer数据访问帮助类 /// </summary> public sealed class SqlHelper { #region 私有构造函数和方法 private SqlHelpe

//微软的SQLHelper类(含完整中文注释) using System; using System.Data; using System.Xml; using System.Data.SqlClient; using System.Collections; namespace BookShop.DBUtility { /// <summary> /// SqlServer数据访问帮助类 /// </summary> public sealed class SqlHelper {

微软SqlHelper类中文注释和使用方法 相关链接: http://blog.csdn.net/itmaxin/article/details/7609566 SqlHelper.cs是N年前微软出品的一个使用ADO.Net方法对SQL Server数据库进行操作的封装类,随后有高人根据这个类写了DbHelper.cs以操作SQL Server之外的数据库,而后微软也发布了Enterprise Library企业库组件.但是对于刚开始学习ADO.Net/C#或者中小企业应用层面来说,根据Sql

这是sqlHelper.cs类,类内里封装了方法 using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Data; using System.Data.SqlClient; using System.Configuration; /// <summary> ///sqlHelper 的摘要说明 /// </summary> public cl

SqlHelper.cs public static class SqlHelper { private static readonly string conStr = ConfigurationManager.ConnectionStrings["sql"].ConnectionString; public static int ExecuteNonQuery(string sql, CommandType cmdType, params SqlParameter[] pms) {

在自学杨中科老师的视频教学时,拓展编写SqlHelper使用,在将ExecuteReader方法封装进而读取数据库中的数据时 会产生Additional information: 阅读器关闭时尝试调用 Read 无效问题,错误产生时,我的代码如下: SqlHelper.cs代码如下: public static SqlDataReader ExecuteReader(string sql)         {             using (SqlConnection conn = new