using System;
using System.Collections.ObjectModel;
using System.Collections.Generic;
using System.Text;
using System.Runtime.Serialization;
public class Customer : System.IComparable {
private int _id;
private string _name;
private string _rating;
private static SortOrder _order;
public enum SortOrder {
Ascending = 0,
Descending = 1
}
public Customer(int id, string name)
: this(id, name, "Other") {
}
public Customer(int id, string name, string rating) {
this._id = id;
this._name = name;
this._rating = rating;
}
public int Id {
get { return this._id; }
set { this._id = value; }
}
public string Name {
get { return this._name; }
set { this._name = value; }
}
public string Rating {
get { return this._rating; }
set { this._rating = value; }
}
public static SortOrder Order {
get { return _order; }
set { _order = value; }
}
public override bool Equals(Object obj) {
bool retVal = false;
if (obj != null) {
Customer custObj = (Customer)obj;
if ((custObj.Id == this.Id) &&
(custObj.Name.Equals(this.Name) &&
(custObj.Rating.Equals(this.Rating))))
retVal = true;
}
return retVal;
}
public override string ToString() {
return this._id + ": " + this._name;
}
public int CompareTo(Object obj) {
switch (_order) {
case SortOrder.Ascending:
return this.Name.CompareTo(((Customer)obj).Name);
case SortOrder.Descending:
return (((Customer)obj).Name).CompareTo(this.Name);
default:
return this.Name.CompareTo(((Customer)obj).Name);
}
}
}
public class CollectionTest {
public static void Main() {
List collCustList = new List();
collCustList.Add(new Customer(99, "H", "P"));
collCustList.Add(new Customer(77, "B", "G"));
collCustList.Add(new Customer(55, "B", "G"));
collCustList.Add(new Customer(44, "R", "O"));
collCustList.Add(new Customer(22, "H", "D"));
collCustList.Add(new Customer(88, "B", "P"));
collCustList.Add(new Customer(11, "L", "O"));
int targetId = 22;
Customer cust22 = collCustList.Find(delegate(Customer cust) {
return cust.Id == targetId;
});
Console.Out.WriteLine("Find Customer Id 22: {0}", cust22.Name);
int custIndex = collCustList.FindIndex(delegate(Customer cust) {
return cust.Id == targetId;
});
Console.Out.WriteLine("Find Customer Id 22 Index: {0}", custIndex);
List goldCustomers = collCustList.FindAll(delegate(Customer cust) {
return cust.Rating.Equals("Gold");
});
foreach (Customer cust in goldCustomers)
Console.Out.WriteLine("Gold Customer Found: {0}", cust);
Customer platCust = collCustList.FindLast(delegate(Customer cust) {
return cust.Rating.Equals("Platinum");
});
Console.Out.WriteLine("Find Last Platinum Customer: {0}", platCust);
IEnumerable rangeCust = collCustList.GetRange(3, 3);
foreach (Customer cust in rangeCust)
Console.Out.WriteLine("Range Customer: {0}", cust);
}
}