How to hide a method in derived class

 public class parent
    {
        private void ParentMethod()
        {
            //some logic
        }
        public void ParentMethod2()
        {
            //some logic
        }
    }

    public class child : parent
    {
       
    } 

public static Void Main()
{
parent  _parentobject=new parent();
_parentobject.ParentMethod();   //this method cannot be accessed since private method  in parent class.
_parentobject.ParentMethod2();  //this method can be accessed since public method in parent class.

child _childobject=new child();
_childobject.ParentMethod();   //this method cannot be accessed since private method  in parent class.
_childobject.ParentMethod2();  //this method can be accessed since public method in parent class.

}

private void methodname()
{
}

class Sample
{
private void a();
}
class sampleb
{

}
a is only accessible in Sample.

If a is public void a();

a is accessible in Sample and sampleb.


class Sample
{
Protected void a();
}
class sampleb : sample
{

}

a is accessible in Sample and sampleb.

class MyClass
{
 private void MyMethod()
 {
  // do something
 }
}
class MyChild : MyClass
{
 // method will not be accessible here.
}