学步园

基类:/****************************简单工厂模式*****************************<br /> * 基类:Namer,可以通过子类实例化父类<br /> * 子类一:ChildFirstName 子类二:ChildLastName<br /> * 这里的命名有问题,应该是ChildFullName,没有改过来.<br /> * 工厂类:NameFactory,通过这个类返回指定的子类的对象<br /> * MainFrm.cs中调用工厂类<br /> ********************************************************************/<br /> using System;<br /> using System.Collections.Generic;<br /> using System.Text;</p> <p>namespace DesignModel.AppCode<br /> {<br /> public class Namer<br /> {<br /> protected string firstName, lastName;<br /> public string getFirstName()<br /> {<br /> return firstName;<br /> }<br /> public string getLastName()<br /> {<br /> return lastName;<br /> }<br /> }<br /> }<br /> using System;<br /> using System.Collections.Generic;<br /> using System.Text;</p> <p>namespace DesignModel.AppCode<br /> {<br /> public class ChildLastName : Namer<br /> {<br /> public ChildLastName(string name)<br /> {<br /> int i = name.IndexOf(",");<br /> if (i > 0)<br /> {<br /> lastName = "调用last类:" + name.Substring(0, i);<br /> firstName = "调用last类:" + name.Substring(i + 1).Trim();<br /> }<br /> else<br /> {<br /> lastName = "调用last类:" + name;<br /> firstName = "调用last类:";<br /> }<br /> }<br /> }<br /> }<br /> using System;<br /> using System.Collections.Generic;<br /> using System.Text;</p> <p>namespace DesignModel.AppCode<br /> {<br /> public class ChildFirstName : Namer<br /> {<br /> public ChildFirstName(string name)<br /> {<br /> int i = name.Trim().IndexOf(" ");<br /> if (i > 0)<br /> {<br /> firstName = "调用first类" + name.Substring(0, i).Trim();<br /> lastName = "调用first类" + name.Substring(i + 1).Trim();<br /> }<br /> else<br /> {<br /> firstName = "调用first类" + name;<br /> lastName = "调用first类";<br /> }<br /> }<br /> }<br /> }<br /> 工厂类:using System;<br /> using System.Collections.Generic;<br /> using System.Text;</p> <p>namespace DesignModel.AppCode<br /> {<br /> /// <summary><br /> /// 工厂类,作用是根据输入返回指定的对象<br /> /// </summary><br /> public class NameFactory<br /> {<br /> public Namer getName(string name)<br /> {<br /> int i = name.IndexOf(",");<br /> if (i > 0)//如果有逗号则返回ChildFullName类<br /> return new ChildLastName(name);<br /> else//如果没有逗号则返回ChildFirstName类<br /> return new ChildFirstName(name);<br /> }<br /> }<br /> }<br /> private void btnOk_Click(object sender, EventArgs e)<br /> {<br /> AppCode.NameFactory nameFactory = new DesignModel.AppCode.NameFactory();<br /> //根据参数决定返回对应的类的对象<br /> //AppCode.Namer namer = nameFactory.getName("first,last");<br /> //通过子类实例化父类<br /> AppCode.Namer namer = nameFactory.getName("last");<br /> //不同的类的getFirstName()方法与getLastName()方法执行的方法体不同<br /> MessageBox.Show(namer.getFirstName());<br /> //通过父类对象也可以调用子类的方法<br /> MessageBox.Show(namer.getLastName());<br /> }