分享程序员开发的那些事...
更新时间：2022-06-15 18:28:19
|
1、抽象接口CustomersBase及其具体实现类Customers
|
|
class CustomersBase
{
private DataObject _dataObject;
protected string group;
public CustomersBase(string group)
{
this.group = group;
}
// Property
public DataObject Data
{
set { _dataObject = value; }
get { return _dataObject; }
}
public virtual void Next()
{
_dataObject.NextRecord();
}
public virtual void Prior()
{
_dataObject.PriorRecord();
}
public virtual void Add(string customer)
{
_dataObject.AddRecord(customer);
}
public virtual void Delete(string customer)
{
_dataObject.DeleteRecord(customer);
}
public virtual void Show()
{
_dataObject.ShowRecord();
}
public virtual void ShowAll()
{
Console.WriteLine("Customer Group: " + group);
_dataObject.ShowAllRecords();
}
}
/// <summary>
/// The 'RefinedAbstraction' class
/// </summary>
class Customers : CustomersBase
{
// Constructor
public Customers(string group)
: base(group)
{
}
public override void ShowAll()
{
// Add separator lines
Console.WriteLine();
Console.WriteLine("**************************");
base.ShowAll();
Console.WriteLine("**************************");
}
}
|
|
2、抽象数据对象类DataObject及其具体实现类CustomersData
|
|
abstract class DataObject
{
public abstract void NextRecord();
public abstract void PriorRecord();
public abstract void AddRecord(string name);
public abstract void DeleteRecord(string name);
public abstract void ShowRecord();
public abstract void ShowAllRecords();
}
/// <summary>
/// The 'ConcreteImplementor' class
/// </summary>
class CustomersData : DataObject
{
private List<string> _customers = new List<string>();
private int _current = 0;
public CustomersData()
{
// Loaded from a database
_customers.Add("James Hao");
_customers.Add("灵动生活");
_customers.Add("郝**");
_customers.Add("*宪*");
_customers.Add("**玮");
}
public override void NextRecord()
{
if (_current <= _customers.Count - 1)
{
_current++;
}
}
public override void PriorRecord()
{
if (_current > 0)
{
_current--;
}
}
public override void AddRecord(string customer)
{
_customers.Add(customer);
}
public override void DeleteRecord(string customer)
{
_customers.Remove(customer);
}
public override void ShowRecord()
{
Console.WriteLine(_customers[_current]);
}
public override void ShowAllRecords()
{
foreach (string customer in _customers)
{
Console.WriteLine(" " + customer);
}
}
}
|