摘要： 类的转换is运算符 using System;classClass1{} class Class2 { } class IsTest { static void Test(Object o) { Class1 a; Class2 b; if (o is Class1) { Console.WriteLine("o is Class1"); a = (Class1)o;// do something for a } else if (o is Class2) { Console.WriteLine("o is Class2"); b = (Class2)o 阅读全文