Syntax error (missing operator) in query expression

protected void uploadFile_Click(object sender, EventArgs e)
    {
        OleDbConnection wpCon = new OleDbConnection(connection);
        wpCon.Open();
        

        if (FileUploadMulti.HasFile)
        {
            foreach (HttpPostedFile uploadedFile in FileUploadMulti.PostedFiles)
        {
                if(System.IO.Directory.Exists(Server.MapPath("~/img/")))
                {
                    System.IO.Directory.CreateDirectory(MapPath("~/img/whitepaper/"));
            uploadedFile.SaveAs(System.IO.Path.Combine(Server.MapPath("~/img/whitepaper/"), uploadedFile.FileName));

           // string uplodFileURL = uploadedFile.SaveAs(System.IO.Path.Combine(Server.MapPath("~/img/whitepaper/"), uploadedFile.FileName));
            string FileNm = uploadedFile.FileName;
            long FileSz =Convert.ToInt64(uploadedFile.ContentLength / 1024f);

            string wpInsertQuery = "Insert into WhitePaper_Table ([FileNm],[FileSz])" + " values(" + FileNm + "," + FileSz + ")";

            OleDbCommand cmdOldb = new OleDbCommand(wpInsertQuery, wpCon);
            OleDbDataAdapter adpOldb = new OleDbDataAdapter(cmdOldb);
            //OleDbDataReader redOldb = cmdOldb.ExecuteNonQuery();
            cmdOldb.ExecuteNonQuery(); 
                    //listofuploadedfiles.Text += String.Format("{0}<br />", uploadedFile.FileName);
               
                
                
                
                }
                
            
            }
        
        
        }
    }