Can't implicitly convert int to model type in c#-CodePudding

I am trying to enter the last generated id of the user into another table column. I tried the following things.

Controller:

public void AddCartDetails(int id, int num)
{
    Cart cart = new()
                {
                    CartNumber = num,
                    User = id,
                    CartQty = 0,
                    CartTotal = 0
                };

    _repository.AddCart(cart);

    if (_repository.SaveAll())
    {
        // Do something
    }
}

When I tried this I am getting an error

Can't implicitly convert int to model type

This happens near the User = id line of code. This happens because I am trying to map an int to a model. I am missing something really basic here but I cannot figure this one out. Any help is appreciated.

User class:

public class User
{
    public int UserId { get; set; }
    public int UserNumber { get; set; }
    public string UserFName { get; set; }
    public string UserLName { get; set; }
    public string UserEmail { get; set; }
    public string UserPhoneNumber { get; set; }
    public string UserRole { get; set; }
}

Cart class:

public class Cart
{
    public int CartId { get; set; }
    public int CartNumber { get; set; }
    public int CartQty { get; set; }
    public decimal CartTotal { get; set; }

    public ICollection<CartItems> Items { get; set; }
    public User User { get; set; }
}

CodePudding user response：

You are trying to set the User property to int, but in Cart class User is the User object.

Cart cart = new()
   {
       CartNumber = num,
       User = id, // here id is int type
       CartQty = 0,
       CartTotal = 0
   };

Have a look at Cart class:

public class Cart
   {
       public int CartId { get; set; }
       public int CartNumber { get; set; }
       public int CartQty { get; set; }
       public decimal CartTotal { get; set; }
       public ICollection<CartItems> Items { get; set; }
       public User User { get; set; } // here User is User type
   }

You should change User to int type or add new property e.g. UserId depending on your needs.

CodePudding user response：

Because User have type of "User" and not integer, you cannot assign in to it. You can either create new user with id of your input:

            var user= new User(){ UserId=id };
            Cart cart = new()
        {
            CartNumber = num,
            User = user ,
            CartQty = 0,
            CartTotal = 0
        };

Or you can look for this post:

Can't implicitly convert int to model type