asp.net DBHelp.cs
public class DBHelper
{
private static SqlConnection connection;
public static SqlConnection Connection
{
get
{
string connectionString = ConfigurationManager.ConnectionStrings["MyCommerce"].ConnectionString;
if (connection == null)
{
connection = new SqlConnection(connectionString);
connection.Open();
}
else if (connection.State == System.Data.ConnectionState.Closed)
{
connection.Open();
}
else if (connection.State == System.Data.ConnectionState.Broken)
{
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using System;
using System.Web;
using System.Data.SqlClient;
using System.Data;
using System.Configuration;
namespace op_db
{
/**//// <summary>
/// רÃÅÓÃÀ´´¦ÀíÓëÊý¾Ý¿âµÄ²Ù×÷
/// </summary>
public class&n ......