正在将虚拟路径外的csv文件绑定到数据表

我正在开发一个ASP.NET 4.5应用程序，它读取服务器My Documents文件夹中另一个应用程序的日志文件。当我在调试模式下运行时，它工作得很好，但一旦部署就不行了。给出以下错误：

"C:''Users''Performance''My Folder''Log''"不是有效路径。请确保路径名拼写正确，并且已连接到文件所在的服务器。

我已授予网络服务和IISUSER对此文件的读/写访问权限。（仅此文件而非文件夹）

这是我的代码：

     protected void lstArea_TextChanged(object sender, EventArgs e)
    {
          //create instance foe oledb connection class
        OleDbConnection con = new OleDbConnection();
        //Your datasource Location path currently i placed csv file in server location 
        string dsource = lstArea.SelectedValue;
        //Put your datasource path in the connection string for example if you have csv files in C:' directory change datasource= C:'
        string constr = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + dsource + ";Extended Properties='text;HDR=No;FMT=Delimited';";
        try
        {
            con.ConnectionString = constr;
            //create instance for command object 
            OleDbCommand cmd = new OleDbCommand();
            cmd.Connection = con;
            // set your file name in the below query
            cmd.CommandText = "select * from [wksplog.txt]";
            //Open Oledb Connection to read CSV file 
            con.Open();
            //Create one datatable to store data from CSV file
            DataTable dt = new DataTable();
            dt.Load(cmd.ExecuteReader(), LoadOption.OverwriteChanges);
            //Bind data in the Gridview
            gvMain.DataSource = dt;
            gvMain.DataBind();
        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            con.Close();
        }   
    }

我将目录作为C:''Users''Performance''My Folder''Log''传递

出了什么问题？BTW正在使用匿名/表单身份验证。此计算机不在域中。