C#保存文件

aspx页：

<ASP:FILEUPLOAD  id=txtPhoto runat="server" Width="178px"></ASP:FILEUPLOAD>   

cs页：

if (txtPhoto.HasFile)

   {  
      txtPhoto.SaveAs(Server.MapPath("~/upload/" + txtPhoto.FileName));
   
      string pguid = "sdfsdf";
      string pfilename = txtPhoto.FileName;
      dbgr.ExeSqlCmd("update OA_Project set Photo=@Photo where guid=@guid", System.Data.CommandType.Text,  { pguid,pfilename});
   }