MVC/DataBaseControlLayer/DBControl.cs

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using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Data.OleDb;
using LeaveMessageMVC.MVC.BusinessLogicLayer.ParameterInformation;
using LeaveMessageMVC.MVC.BusinessLogicLayer;
using LeaveMessageMVC.MVC.BusinessLogicLayer.SomeFunctions;

namespace LeaveMessageMVC.MVC.DataBaseControlLayer
{
    /// <summary>
    /// DBControl 的摘要说明
    /// </summary>
    public static class DBControl
    {
        /// <summary>
        /// 数据库 连接字符串
        /// </summary>
        /// 备注：如果 ConfigurationManager.AppSettings["xxx"] 指定的“xxx”在web.config中不存在，
        ///       则 ConnectionString = null
        static private string ConnectionString = ConfigurationManager.AppSettings["DBCONNECTIONSTRING"];

        /// <summary>
        /// 数据库连接 对象（for SQL Server）
        /// </summary>
        static private SqlConnection LMDBConnection;

        /// <summary>
        /// 数据库连接 对象（for Access）
        /// </summary>
        static private OleDbConnection DBConnection;

        /// <summary>
        /// 判断是否为 Access数据库 连接
        /// </summary>
        static private bool AccessCnt = false;

        /// <summary>
        /// 用以保存 异常 信息的字符串
        /// </summary>
        static private Exception SomeExceptions = new Exception();

        /// <summary>
        /// 获取异常信息
        /// </summary>
        public static Exception DBControlError
        {
            get
            {
                return SomeExceptions;
            }
        }