展示一段代码及结果，如果大家有深入的讲解，可以留下学习。

public class Number
{
public static int i = 123;

public virtual void showInfo()
{
Console.WriteLine("base class --");
}
public virtual void showNumber()
{
Console.WriteLine(i.ToString());
}
}
public class IntNumber:Number
{
new public static int i = 456;

public new virtual void showInfo()
{
Console.WriteLine("Derived class --");
}
public override void showNumber()
{
Console.WriteLine("base number is {0}", Number.i.ToString());
Console.WriteLine("new number is {0}", i.ToString());
}
}

class TestNumber
{
public static void Main()
{

Number numb = new IntNumber();

numb.showInfo();

numb.showNumber();

Console.Read();

}
}

numb.showInfo()执行的是基类的showInfo.

numb.showNumber()执行的是子类的showNumber.