学步园

using System;<br /> using System.Web;</p> <p>public class BaseClass<br /> {<br /> protected int _a;</p> <p> public int a<br /> {<br /> get { return _a; }<br /> }</p> <p> public void Fun()<br /> {<br /> _a = 3;</p> <p> HttpContext.Current.Response.Write("<br/>" + a);<br /> }<br /> }</p> <p>public class TestClass : BaseClass<br /> {<br /> private int _a = 1;</p> <p> public new int a<br /> {<br /> get { return _a + 1; }<br /> }<br /> }</p> <p>TestClass t = new TestClass();<br /> Response.Write(t.a);<br /> t.Fun();<br /> Response.Write("<br/>" + t.a);<br /> Response.Write("<br/>");</p> <p>//输出：232

using System;<br /> using System.Web;</p> <p>public class BaseClass<br /> {<br /> protected int _a;</p> <p> public virtual int a<br /> {<br /> get { return _a; }<br /> }</p> <p> public void Fun()<br /> {<br /> _a = 3;</p> <p> HttpContext.Current.Response.Write("<br/>" + a);<br /> }<br /> }</p> <p>public class TestClass : BaseClass<br /> {<br /> private int _a = 1;</p> <p> public override int a<br /> {<br /> get { return _a + 1; }<br /> }<br /> }</p> <p>//输出：222