cs/AcsHelper.cs

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using System;
using System.Data;
using System.Data.OleDb;
using System.Configuration;
using System.Web;
using System.Collections.Generic;

public class AcsHelper
{
    private string strConnectionString = "";
    public OleDbConnection cnn;
    /// <summary>
    ///打开数据库连接
    /// </summary>
    public void Open()
    {
        close();
        if (cnn == null)
        {
            cnn = new OleDbConnection(ConfigurationManager.ConnectionStrings["oleConnectionString"].ConnectionString);

        }
        if (cnn.State == ConnectionState.Closed)
        {
            try
            {
                cnn.Open();
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }

        }
    }

    /// <summary>
    /// 关闭数据库连接
    /// </summary>
    public void close()
    {
        if (cnn != null)
        {
            if (cnn.State == ConnectionState.Open)
            {
                cnn.Close();
                cnn.Dispose();
            }
        }

    }
    /// <summary>
    /// 释放资源
    /// </summary>
    public void Dispose()
    {
        // 确认连接是否已经关闭
        if (cnn != null)
        {
            cnn.Dispose();