How to add data from controller into nested model in ASP.NET Core?-CodePudding

I want to add data in relational model

public class person
{
    public int id { get; set; }
    public string name { get; set; }
    public virtual ICollection<phone> Phones { get; set; }
}

public class Phone
{
    public int id { get; set; }
    public string Phonenumber { get; set; }
    public int personid { get; set; }
    public virtual person Person { get; set; }
    public virtual ICollection<phone> Phones { get; set; }

    public virtual ICollection<Address> Addresses { get; set; }
}                   

public class Address
{
    public int id { get; set; }
    public string desc { get; set; }
}

When I add data to addresses

for (int i = 0; i < model.count; i  )
{
    person.phones[0].Addresses[i]= model;
}

I get this message:

Must be non-negative and less than the size of the collection

CodePudding user response：

hope that I'm not being stupid here but you might want to check the capitalisation of the properties.

Notably the person has a parameter 'Phones' but it seems like you are trying to access 'phones'. Not sure if it will make a difference but I guess it might be worth a try.

CodePudding user response：

in controller

public IActionresult createperson(PersonModel model, string[] Addmodel){
    if(model.phones != null)
    {
        int i= 0;
        foreach(item in addmodel)
        {               
            var newmodel= new Addressmodel();
            mewmodel.desc= item;
            model.Phones[0].Address[i]= newmodel;
            i  ;
        }
    }
}

I add breakpoint in model.Phones[0].Address[i]= newmodel; and i saw can't access Address[i] and i get this error

Must be non-negative and less than the size of the collection