You cannot initilize this way because the AgentIdDetails
is an ICollection<AgentIdDetail>
and not a single instance of AgentIdDetail
.
You have to initilize the collection and then add a new item on this collection. For sample:
// initilize as a List<AgentIdDetail>
bigAgent.AgentIdDetails = new List<AgentIdDetail>();
foreach (var s in symNumToAgId)
{
AgentIdDetail item = new AgentIdDetail();
item.AgentId = s.AgentId;
item.CompanyCode = s.CompanyCode;
tradingParter = db.AgentIdToTradingPartner
.Where(r => r.AgentId == s.AgentId).ToList();
item.TradingPartners = new List<string>();
foreach (var t in tradingParter)
{
item.TradingPartners.Add(t.TradingPartner.ToString());
}
bigAgent.AgentIdDetails.Add(item);
}
As a good pratice, I like to initilize my Collection properties on ViewModels on the constructor, so I do not need to worry about initilize when I fill it, unless I need a new one, for sample:
public class AgentWithTraining
{
public Monet.Models.Agent Agent { get; set; }
public ICollection<AgentProdTrainDetail> AgentProdTrainDetails { get; set; }
public ICollection<AgentIdDetail> AgentIdDetails { get; set; }
public AgentWithTraining()
{
this.AgentProdTrainDetails = new List<AgentProdTrainDetail>();
this.AgentIdDetails = new List<AgentIdDetail>();
}
}