asp.net mvc form validationHttpPostedFileBase RSS

• • Reply
  

  rmcclain

  Member

  48 Points

  30 Posts

  asp.net mvc form validationHttpPostedFileBase

  Mar 06, 2011 08:17 PM|LINK

  i have a form that contains a few textboxes and an upload entry. On submit, i do some server side validation that hits the database to make sure the one field of the fields is not a duplicate. The problem i am running into is if the user uploads a file and enters an invalid entry for the other fields the upload disappears on postback. is there an easy use to retain that information? otherwise the user will have to go an upload the file again.

• • Reply
  

  SreejithGopi...

  Participant

  922 Points

  148 Posts

  Re: asp.net mvc form validationHttpPostedFileBase

  Mar 07, 2011 12:48 AM|LINK

  You can keep the file in TempData

  public ActionResult Index(HttpPostedFileBase fileUpload)
  {
      TempData["fileUpload"] = fileUpload;
  }

  In subsequent post you can access like

  HttpPostedFileBase file = (HttpPostedFileBase)TempData["fileUpload"];
  

  Please mark as Answer if this post helps in resolving your problem
• • Reply
  

  raduenuca

  All-Star

  24675 Points

  4250 Posts

  Re: asp.net mvc form validationHttpPostedFileBase

  Mar 07, 2011 04:39 AM|LINK

  If you're using MVC3 try to use RemoteValidation:

  http://www.aaronstannard.com/post/2010/12/07/remote-validation-asp-net-mvc3.aspx

  Please click 'Mark as Answer' if my reply has assisted you
  
  Radu Enuca | Blog
• • Reply
  

  rmcclain

  Member

  48 Points

  30 Posts

  Re: asp.net mvc form validationHttpPostedFileBase

  Mar 07, 2011 02:27 PM|LINK

  thanks for the response. i was thinking about storing it into a session but after reading the link below i felt this wasn't the way to go.

   

  http://stackoverflow.com/questions/4747833/cannot-save-httppostedfilebase-to-session-variable-and-use-twice

   

   

• • Reply
  

  rmcclain

  Member

  48 Points

  30 Posts

  Re: asp.net mvc form validationHttpPostedFileBase

  Mar 07, 2011 02:29 PM|LINK

  thanks for the response.

  wow remotevalidation looks like it would work but i'm not using MVC3.  We are looking into upgrading to this version for future projects.

• • Reply
  

  raduenuca

  All-Star

  24675 Points

  4250 Posts

  Re: asp.net mvc form validationHttpPostedFileBase

  Mar 07, 2011 02:33 PM|LINK

  Just download the source code for MVC3 and look at the RemoteAttribute implementation. See if you can adapt the code to work in MVC2

  Please click 'Mark as Answer' if my reply has assisted you
  
  Radu Enuca | Blog
  • Marked as answer by rmcclain on Mar 07, 2011 03:32 PM
• • Reply
  

  counsellorbe...

  Member

  540 Points

  112 Posts

  Re: asp.net mvc form validationHttpPostedFileBase

  Mar 07, 2011 03:17 PM|LINK

  rmcclain

  thanks for the response.

  wow remotevalidation looks like it would work but i'm not using MVC3.  We are looking into upgrading to this version for future projects.

   

  Here is a link to an article from Brad Wilson showing how to add remote validation to MVC 2:  http://bradwilson.typepad.com/blog/2010/01/remote-validation-with-aspnet-mvc-2.html.

  counsellorben