在C＃.net中调用基类函数

Question

public class c2
    {
        public void Print()
        {
            MessageBox.Show("C2");
        }//print
    }//c2

    public class c1 : c2
    {
        public void Print()
        {
            MessageBox.Show("C1");
        }//print
    }//c1

How do i call Print() of base class(c2) using derived class Object(Function name are same in both classes)

Answer 1

您可以使用base.Print()来调用它。

Answer 2

If you have an instance of c1 , you can cast it to c2 to be able to call that method. For example:

var myc1 = new c1();

((c2)myc1).Print();

NOTE: This solution works in this example because c1.Print() only hides c2.Print() as opposed to overriding it.

Answer 3

public class c2 
{ 
    virtual public void Print() 
    { 
        MessageBox.Show("C2"); 
    }//print 
}//c2 

public class c1 : c2 
{ 
    override public void Print() 
    { 
        MessageBox.Show("C1"); 
        base.Print();
    }//print 
}//c1 

if you want run at C1's Print C2'S function, too. But to override the function the print function you shall declared it abstract or virtual.