Question

I’m sorry if my question isn’t clear.

I have a class contain some properties and one of them is “Parent” which the same type of this class.

when i read data from Database i set the suitable value for each property. But how could i put the “Parent” property when i read it from database as “ParentID”.

If it’s not clear I’ll put Example.

thank you very much in advanced.

This’s my class:

class smsPart
    {
        private int _id;
        private smsPart _parent;
        private string _name;


        public int ID
        {
            get { return _id; }
            set { _id = value; }
        }

        public smsPart Parent
        {
            get { return _parent; }
            set { _parent = value; }
        }

        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }



        public smsPart()
        {
            this._id = 0;
            this._parent = null;
            this._name = null;
        }

        public smsPart(int pID, smsPart pParent, string pName, smsType pType)
        {
            this._id = pID;
            this._parent = pParent;
            this._name = pName;
        }
    }

and when i read data from database i fill “ID” as int and “Name” as string.

but how i would set “Parent” as “smsPart” when i read it from database as “ParentID” int.??

Answer 1

I suppose you generated your database classes manually…

You could use a dictionary ID -> object as follows:

using System;
using System.Collections.Generic;

class Program {

    class Outer {

        static Dictionary<int, Outer> _ids = new Dictionary<int, Outer>();

        public Outer(int id) {
            _ids[id] = this;
        }

        public class Inner {
            public Outer Parent {
                get;
                set;
            }

            public Inner(int parentId) {
                Parent = Outer._ids[parentId];
            }

        }
    }

    static void Main(string[] args) {
        Outer o = new Outer(1);
        Outer.Inner i = new Outer.Inner(1);
    }
}

You might also consider using linq to sql.