Question

My action is :

[HttpPost]
public ViewResult SearchPost(FormCollection frm)
{

    IList <post> p =db.posts.Include("user").ToList();


    if (Request.Form["area"] != null)          
    {
        if ((p!=null) && (p.Any()))

        {

            p =p.Where(a=>a.area==Request.Form["area"]).ToList();     

        }
   }           
    if (Request.Form["floor"] != null)          
    {              
        if ((p!=null) && (p.Any()))

        {
            p = p.Where(a => a.floor ==   
           Request.Form["floor"]).ToList();                              
        }
    }            
    if (Request.Form["garage"] != null)          
    {
        if ((p!=null) && (p.Any()))

        {
            p = p.Where(a => a.garage ==   
            Request.Form["garage"]).ToList();                                    
        }
    }  


    return View(p);
}

it has shown no errors. but always return null. it should return filtered post objects or simply all posts without filtering. is there any problem ?? i can’t find it .

Answer 1

I don’t know the full signatures of the types that you are dealing with, but perhaps try this code and see if you get any better results:

[HttpPost]
public ViewResult SearchPost(FormCollection frm)
{
    var area = Request.Form["area"];
    var floor = Request.Form["floor"];
    var garage = Request.Form["garage"];

    return View(db.posts.Include("user")
        .Where(a => area == null || a.area == area)
        .Where(a => floor == null || a.floor == floor)
        .Where(a => garage == null || a.garage == garage).ToList());
}

(This is essentially a rewrite of your code down into a single query that might help you with debugging.)