oledb for vfp错误：在Web服务器上运行asp.net时路径或文件名无效

我使用microsoft oledb for visualfoxpro驱动程序开发web应用程序asp.net连接到visual fox pro数据库自由表（.dbf）。 当我在开发连接时使用vs2013运行程序时，一切正常。 但当我的网站在Web服务器上运行时，它无法搜索或连接到vfp数据库 我得到这个错误：路径或文件名无效

这是我连接vfp数据库的代码

Try
            'if use visual fox pro Connect to a single DBF-file
            ConnectionString = "Provider=vfpoledb;Data Source=//database/event/event/OPD/OUT.DBF;sourcetype=DBF;exclusive=No;Collating Sequence=machine; User ID=stat1;Password = stat1;"
            dBaseConnection = New OleDb.OleDbConnection(ConnectionString)
            dBaseConnection.Open()

            sCommand = "SELECT lastdate,save_id,count(*) AS Tcoder FROM OUT.DBF WHERE lastdate BETWEEN CTOD('" & TextBox1.Text & "') and CTOD('" & TextBox2.Text & "') AND typeevent LIKE '%" & TextBox3.Text & "%' "
            sCommand &= "AND lasttime >= '" & ddlFromTime.SelectedValue & "' AND lasttime <= '" & ddlToTime.SelectedValue & "' GROUP BY lastdate,save_id ORDER BY Tcoder DESC "
            dBaseCommand = New OleDb.OleDbCommand(sCommand, dBaseConnection)
            '
            Dim dt As DataTable = GetData(dBaseCommand)
            GridView1.DataSource = dt
            GridView1.DataBind()
            '
            dBaseConnection.Close()
        Catch ex As OleDb.OleDbException
            Response.Write("Error: " + ex.Message)
        End Try

试试看
'如果使用visual fox pro连接到单个DBF文件
ConnectionString=“Provider=vfpoledb；数据源=//database/event/event/OPD/OUT.DBF；sourcetype=DBF；exclusive=No；排序顺序=machine；用户ID=stat1；密码=stat1；”
DBASconnection=新的OleDb.OleDb连接（ConnectionString）
dbasconnection.Open（）
sCommand=“选择lastdate，保存\u id，将（*）作为OUT.DBF中的Tcoder，其中lastdate介于CTOD（‘“&TextBox1.Text&“’）和CTOD（‘“&TextBox2.Text&“’）之间，类型为事件，如“%”&TextBox3.Text&“%””
sCommand&=“AND lasttime>=”&ddlFromTime.SelectedValue&“”AND lasttime首先，您的连接字符串应该只指向表所在的路径，而不是.dbf文件的实际名称。然后，您可以从位于连接到路径中的任何.dbf进行查询

第二，在构建查询时，避免SQL注入，因为您现在已经完全打开了，请执行字符串连接。为了防止这种情况，VFP使用“？”作为参数的占位符，并且需要按照查询中显示的相同顺序添加参数

ConnectionString = "Provider=vfpoledb;Data Source=//database/event/event/OPD;sourcetype=DBF;exclusive=No;Collating Sequence=machine; User ID=stat1;Password = stat1;"
dBaseConnection = New OleDb.OleDbConnection(ConnectionString)
dBaseConnection.Open()

' Notice all the "?" place-holders for the parameters.
sCommand = 
  @"SELECT lastdate, save_id, count(*) AS Tcoder    
       FROM OUT.DBF
       WHERE BETWEEN( lastdate, ?, ? )
          AND typeevent LIKE ?
          AND lasttime >= ?
          AND lasttime <= ?
       GROUP BY 
          lastdate,
          save_id 
       ORDER BY 
          Tcoder DESC ";

' get the command instance
dBaseCommand = New OleDb.OleDbCommand(sCommand, dBaseConnection)
' NOW, add the parameters IN ORDER as they appear... starting with the dates

' but you will have to convert the ".Text" values to a date field in VB.net 
' first, then the date-based field will be properly recognized in the VFP call.  Sorry not fluent in VB to convert, but you should be able to get that.
dBaseCommand.Parameters.AddWithValue( "parmFromDate", TextBox1.Text );
dBaseCommand.Parameters.AddWithValue( "parmFromDate", TextBox2.Text );

' now for the "TypeEvent" criteria, no wrapping the text within quotes
' as the query knows it is a string, so don't explicitly add quotes.
dBaseCommand.Parameters.AddWithValue( "parmTypeEvent", "%"+ TextBox3.Text +"%");

' It appears your LASTTIME field are string-based, so no conversion
' just strings like other.
dBaseCommand.Parameters.AddWithValue( "parmTime1", ddlFromTime.SelectedValue );
dBaseCommand.Parameters.AddWithValue( "parmTime2", ddlToTime.SelectedValue );

' Now, finish getting the data and setting the Data source to the result
Dim dt As DataTable = GetData(dBaseCommand)
GridView1.DataSource = dt
GridView1.DataBind()

dBaseConnection.Close()

ConnectionString=“Provider=vfpoledb；数据源=//数据库/event/event/OPD；sourcetype=DBF；独占=否；排序顺序=机器；用户ID=stat1；密码=stat1；"
DBASconnection=新的OleDb.OleDb连接（ConnectionString）
dbasconnection.Open（）
请注意参数的所有“？”占位符。
sCommand=
@选择lastdate，将\u id，count（*）另存为Tcoder
FROM OUT.DBF
其中介于（最后日期，，？）
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