查询上传数据时出错！Microsoft Jet 数据库引擎找不到对象'a$'。请确定对象是否存在，并正确地写出它的名称和路径。
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.OleDb;
using System.Data.SqlClient;
public class BaseFunction
{
/// <summary>
/// 取得上传文件的数据集
/// </summary>
/// <param name="strUpFileExtName">上传文件扩展名</param>
/// <param name="strUpFileName">上传文件名</param>
/// <param name="strUpPath">上传的路径</param>
/// <param name="strSplitChar">拆分字符或Excel表名</param>
/// <param name="aryField">要导入的数据字段数组</param>
/// <returns></returns>
public static DataSet GetOleDbData(string strUpFileExtName, string strUpFileName, string strUpPath, string strSplitChar, string[] aryField, bool preview)
{
string strDBDatabaseName;
string DBSQL;
if (preview)
&nbs
