Which model will select to be base of view Sales Order Entry Form ( SalesFooter Model

[engbarbary]

I work in project work in asp.net core 2.1 visual studio 2017 SQL Server 2012


I actually need to make entry form Sales Order consist from Sales Header Model and Sales Footer model


on Sales Order Entry Form

on Header(represent by Sales Header Model) 
SalesOrderNO   1
SalesYear      2019
SalesDate      2019-01-17
BranchCode     1
SalesTypeNo    1
CustomerNo     2509
on Footer(represent by Sales Footer Model)
SalesLineNo ItemCode  Quantity  Price Total
1                  12929         5          10       50
2                  17918         4           5       20

Result of Process above when Save the Order


One record added to Sales Header Table.
Two record added to Sales Footer Table.


so that what Model I will select it to be based of Sales Order (Sales Footer Or Sales Header) :

Sales Header Model
public int SalesOrderNo { get; set; }
public int SalesYear { get; set; }
public int BranchCode { get; set; }
public int SalesType { get; set; }
public DateTime SalesDate { get; set; }
public int CustomerID { get; set; }
public Customer Customers { get; set; }
public ICollection<SalesFooter> SalesFooters { get; set; }

Sales Footer model
public int SalesOrderNo { get; set; }
public int SalesLineNo { get; set; }
public int SalesType { get; set; }
public int BranchCode { get; set; }
public string ItemCode { get; set; }
public decimal Quantity { get; set; }
public decimal UnitPrice { get; set; }
public decimal Total { get; set; }
public Items Itemes { get; set; }
public SalesHeader SaleHeaders { get; set; }