DAL/AccessDBHelp.cs

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.Data;
using System.Data.OleDb;

namespace DAL
{
    public class AccessDBHelp
    {

        //读取配置文件连接字符串
        //"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=BookSystemDB.accdb;Jet OLEDB:Database Password=123456"
        //"Provider=Microsoft.ACE.OLEDB.4.0;Data Source=BookSystemDB.mdb;Jet OLEDB:Database Password=123456"
        //public static readonly string connstr1 = System.Configuration.ConfigurationManager.AppSettings["connstr"].ToString();
        public static readonly string connstr = Properties.sql.Default.accessStr;


        //public static readonly string connstr1 = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=BookSystemDB.accdb;Jet OLEDB:Database Password=123456";
        public static int ExecuteNonQuery(string cmdText, params OleDbParameter[] parameters)
        {
            using (OleDbConnection conn = new OleDbConnection(connstr))
            {
                conn.Open();
                using (OleDbCommand cmd = conn.CreateCommand())
                {
                    cmd.CommandText = cmdText;
                    cmd.CommandTimeout = 3000;
                    if (parameters != null)
                    {
                        cmd.Parameters.AddRange(parameters);
                    }
                    return cmd.ExecuteNonQuery();
                }
            }
        }

        private static OleDbConnection connection;
        /// <summary>
        /// 获取连接数据库对象
        /// </summary>
        public static OleDbConnection GetConnection
        {
            get
            {
                string strConn = connstr;
                if (connection == null)
                {
                    connection = new OleDbConnection(strConn);
                    connection.Open();
                }
                else if (connection.State == ConnectionState.Closed)
                {
                    connection = new OleDbConnection(strConn);
                    connection.Open();
                }
                else if (connection.State == ConnectionState.Broken)
                {