Get Total of a field in mvc entitymodel 1st - asp.net-mvc

Question

I am trying to get total on my view.
I am confused what should i do? Please help me out..
I am not understanding where should i use query and ofc I need it in my view to show but how?
Model class
namespace BOL1
{
public class ADetailsVm
{
public List<BOL1.tbl_Transiction> Payables { get; set; }
public List<BOL1.tbl_Transiction> Reciveables { get; set; }
}
}
DbContext
public partial class bankingEntities : DbContext
{
public bankingEntities()
: base("name=bankingEntities")
{
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
throw new UnintentionalCodeFirstException();
}
public virtual DbSet<tbl_Accounts> tbl_Accounts { get; set; }
public virtual DbSet<tbl_Transiction> tbl_Transiction { get; set; }
public virtual DbSet<tbl_TransictionType> tbl_TransictionType { get; set; }
public DbSet<ADetailsVm> ADetailsVm { get; set; }
}
}
Controller
public class Details : Controller
{
private TransictionBs objbs;
public Details()
{
objbs = new TransictionBs();
}
// GET: Shinwari/AccountDetails
[HttpGet]
public ActionResult Index(int accountid)
{
ADetailsVm v = new ADetailsVm();
//Load both the collection properties
v.Payables = objbs.GetALL().Where(p => p.AId == accountid && p.tbl_TransictionType.Type.Contains("Payable")).ToList();
v.Reciveables = objbs.GetALL().Where(r => r.AId==accountid && r.tbl_TransictionType.Type.Contains("Reciveable")).ToList();
return View(v);
View
#model BOL1.ADetailsVm
#{
ViewBag.Title = "Index";
}
<h2>AccountDetails</h2>
<p>
#Html.ActionLink("Create New", "Create")
</p>
<table id="Payables" class="table">
<tr>
<th>
Date
</th>
<th>
Discription
</th>
<th>
Amount
</th>
</tr>
#foreach (var item in Model.Payables)
{
<tr>
<td>
#item.Date
</td>
<td>
#item.TDiscription
</td>
<td>
#item.Amount
</td>
</tr>
}
</table>

Answer 1

Use the LINQ Sum extension method on the Amount property(assuming it is of numeric type) of your Payables collection property of the view model.
<h2> #Model.Payables.Sum(s=>s.Amount) </h2>
Or if you do not like adding so much C# code in razor views(like me :)), You may add a new property to store the total in your view model.
public class ADetailsVm
{
public decimal TotalPayableAmount { set;get;}
public List<BOL1.tbl_Transiction> Payables { get; set; }
public List<BOL1.tbl_Transiction> Reciveables { get; set; }
}
and in your action method, call the Sum method and set the value to our new TotalPayableAmount property.
public ActionResult Index(int accountid)
{
var v = new ADetailsVm();
v.Payables = objbs.GetALL().Where(p => p.AId == accountid &&
p.tbl_TransictionType.Type.Contains("Payable")).ToList();
v.Reciveables = objbs.GetALL().Where(r => r.AId == accountid &&
r.tbl_TransictionType.Type.Contains("Reciveable")).ToList();
v.TotalPayableAmount= v.Payables.Sum(s=>s.Amount)
return View(v);
}
and in your view
#model ADetailsVm
<h2>#Model.TotalPayableAmount</h2>