SimpleFactory

最新推荐文章于 2024-09-12 08:33:13 发布

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本文介绍了一个使用C#实现的面向对象设计案例，通过基类`BaseName`及派生类`Hotel`和`Room`展示了如何组织类结构、初始化实例属性并返回相关数据。此外还提供了一个工厂类`MyNameFactory`用于创建不同类型的对象。

基类

public class BaseName { //parts stored here protected string enName, cnName; protected DataTable dt = null; public string GetENName() { return enName; } public string GetCNName() { return cnName; } public DataTable GetDataByName() { return dt; } }

子类

public class Hotel:BaseName { public Hotel(string name) { int i = name.IndexOf (" "); if (i > 0) { enName = name.Substring(0, i).Trim(); cnName = name.Substring(i + 1).Trim(); } else { enName = ""; cnName = name; } dt = this.GetData(); } private DataTable GetData() { DataTable dt = new DataTable(); dt.Columns.Add("name", typeof(string)); DataRow row = null; for (int i = 0; i < 3; i++) { row = dt.NewRow(); row["name"] = "hotel" + i + enName + cnName; dt.Rows.Add(row); } return dt; } }

public class Room:BaseName { public Room(string name) { int i = name.IndexOf(" "); if (i > 0) { enName = name.Substring(0, i).Trim(); cnName = name.Substring(i + 1).Trim(); } else { enName = ""; cnName = name; } dt = this.GetData(); } private DataTable GetData() { DataTable dt = new DataTable(); dt.Columns.Add("name", typeof(string)); DataRow row = null; for (int i = 0; i < 3; i++) { row = dt.NewRow(); row["name"] = "Room" + i + enName + cnName; dt.Rows.Add(row); } return dt; } }

public class MyNameFactory { public MyNameFactory() { } public BaseName GetName(string name,int type) { switch (type) { case 1: return new Hotel(name); case 2: return new Room(name); default: return new Hotel(name); } } }

调用

MyNameFactory myNameFactory = new MyNameFactory(); BaseName baseName = myNameFactory.GetName(txName.Text, 1); string cnName = baseName.GetCNName(); string enName = baseName.GetENName(); DataTable dt = baseName.GetDataByName(); BaseName baseName2 = myNameFactory.GetName(txName.Text, 2); string cnName2 = baseName2.GetCNName(); string enName2 = baseName2.GetENName(); DataTable dt2 = baseName2.GetDataByName();