base keyword in c#

->If both base and derived class contains same method names and variable names then we have to use
 base keyword.
->Below sample code shows the use of base keyword.

Sample Code:-

 {

  B b =new B();
  int r=b.m();
  Response.write(r);
  }
}
public class A
   {
      public int X =10;
      public string y="hello"
   }
public class B:A
  {
   new public int x=20; // new keyword
   new public string="rakesh"; // new keyword
   public int m()
     {
        return x+base.X;  // ussing base keyword(X is base class variable and x is derived class variable)
 
Note: We can access only same class variable and method(only base class member) but we can not access derive class variable and method