how to resolve web api error 'System.OutOfMemoryException' - asp.net-mvc

Question

I am creating ASP.Net MVC WebApi to share my data to bank. In this regard i have created an SQL View bit when i am testing my WebApi it is giving an 'System.OutOfMemoryException' error because i have more the 1 million record in SQL View.
My Code is given below:-
This is my controller
public class InvoiceController : ApiController
{
public IEnumerable<VBank_invoice> Get()
{
using (kmcEntities entities = new kmcEntities())
{
return entities.VBank_invoice.ToList();
}
}
public VBank_invoice Get(string consumer)
{
using (kmcEntities entities = new kmcEntities())
{
return entities.VBank_invoice.FirstOrDefault(e => e.consumer_no == consumer);
}
}
}
My SQL View Class
public partial class VBank_invoice
{
public int sno { get; set; }
public string consumer_no { get; set; }
public string consumer_name { get; set; }
public string consumer_address { get; set; }
public string billing_month { get; set; }
public Nullable<decimal> current_Charges { get; set; }
public Nullable<decimal> outstanding_Arrears { get; set; }
public Nullable<decimal> Arrears_15 { get; set; }
public Nullable<decimal> part_payment_arrears { get; set; }
public string billing_period_code { get; set; }
public string consumer_checkdigit { get; set; }
public Nullable<System.DateTime> due_date { get; set; }
}
This is my Model.Context.cs File
public partial class kmcEntities : DbContext
{
public kmcEntities()
: base("name=kmcEntities")
{
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
throw new UnintentionalCodeFirstException();
}
public virtual DbSet<VBank_invoice> VBank_invoice { get; set; }
}

Answer 1

I believe you need to be serialize object model using the select query.
public class InvoiceController : ApiController
{
public IEnumerable<VBank_invoice> Get()
{
using (kmcEntities entities = new kmcEntities())
{
return entities.VBank_invoice.select(m => new {
m.sno, m.consumer_no,m.consumer_name, m.consumer_address,
m.billing_month, m.current_Charges, m.outstanding_Arrears,
m.Arrears_15, m.part_payment_arrears, m.billing_period_code,
m.consumer_checkdigit, m.due_date }).ToList();
}
}
}