using System.Text; using System.Data.Common; using System.Data; using System.Configuration; namespace HomeAndSchool.DAL { public class DBHelper { private static string dbProviderName = ConfigurationManager.AppSettings["DbHelperProvider" ]; private s
using System;
using System.Data;
using System.Data.SqlClient;
namespace Whir.Software.Framework.Ultimate
{
///
/// 数据库访问助手
///
public class DbHelper
{
#region 判断连接是否成功
///
/// 判断连
