system.argumentnullexception value cannot be null on Model.Any() - asp.net-mvc-4

Question

I am getting "system.argumentnullexception" on the Model.Any() line when I submit the form and the table in database is currently empty. the code of view are as follow.
#using System.Linq
#model IEnumerable<Al_sehrawi.Models.tbl_Packing>
#{
ViewBag.Title = "AddBox2";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>AddBox2</h2>
#{
if (Model.Any())
{
foreach (var i in Model)
{
<form action="~/Packing/AddBox2" method="post">
<table>
<tr>
<td>
Id:
#{int counter = i.packing_id + 1;}
<input name="id" type="number" value="#counter" />
</td>
</tr>
<tr>
<td>
Name :
</td>
<td>
<input name="packingName" type="text" />
</td>
</tr>
<tr>
<td>
Unit :
</td>
<td>
<input name="unit" type="text" />
</td>
</tr>
<tr>
<td>
Quantity of 1st Packing :
</td>
<td>
<input name="quantity1" type="number" />
</td>
</tr>
<tr>
<tr>
<td>
Quantity of 2nd Packing :
</td>
<td>
<input name="quantity2" type="number" />
</td>
</tr>
<tr>
<td>
<input name="Submit1" type="submit" value="submit" />
</td>
</tr>
</table>
</form>
}
}
else
{
<form action="~/Packing/AddBox2" method="post">
<table>
<tr>
<td>
Id:
<input name="id" type="number" value="1" />
</td>
</tr>
<tr>
<td>
Name :
</td>
<td>
<input name="packingName" type="text" />
</td>
</tr>
<tr>
<td>
Unit :
</td>
<td>
<input name="unit" type="text" />
</td>
</tr>
<tr>
<td>
Quantity of 1st Packing :
</td>
<td>
<input name="quantity1" type="number" />
</td>
</tr>
<tr>
<tr>
<td>
Quantity of 2nd Packing :
</td>
<td>
<input name="quantity2" type="number" />
</td>
</tr>
<tr>
<td>
<input id="Submit1" type="submit" value="submit" />
</td>
</tr>
</table>
</form>
}
}
The code in PackingController are as follow.
public ActionResult AddBox2()
{
PackingModel c = new PackingModel();
var id = c.getNextId();
return View(id);
}
[HttpPost]
public ActionResult AddBox2(int id, string packingName, string unit, int quantity1, int quantity2)
{
PackingModel p = new PackingModel();
p.addBox2(id, packingName, unit, quantity1, quantity2);
return View();
}
and the Model is
public bool addBox2(int id, string packingName, string unit,int quantity1, int quantity2)
{
try
{
using (POSEntities1 db = new POSEntities1())
{
tbl_Packing p = new tbl_Packing();
tbl_packing_box2a b1 = new tbl_packing_box2a();
tbl_packing_box2b b2 = new tbl_packing_box2b();
p.name = packingName;
p.unit = unit;
b1.quantiity = quantity1;
b1.tbl_packing_box_id = id;
int a_Id;
var result = db.tbl_packing_box2a.OrderByDescending(b => b.tbl_packing_box1a_id).Take(1).ToList();
foreach (var item in result)
{
a_Id = item.tbl_packing_box1a_id;
b2.quantity = quantity2;
b2.tbl_packing_box2a_id = a_Id;
db.tbl_Packing.Add(p);
db.tbl_packing_box2a.Add(b1);
db.tbl_packing_box2b.Add(b2);
db.SaveChanges();
}
}
}
catch (Exception)
{
return false;
}
return true;
}

Answer 1

First check if model is empty and then try Model.Any()
#if (Model != null)
{
if (Model.Any())
{
....
}
}