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public class A
{
public A(string s1, string s2)
{
}
//增加构造函数的重载
public A()
{
}
}
//调用处代码
//加重载前
obj = Activator.CreateInstance(tp,"s1","s2");
//加重载后,以下两种都可以
obj = Activator.CreateInstance(tp);
obj = Activator.CreateInstance(tp,"s1","s2");