.net - Inherit and add properties to child class -

i can inherit class, , add properties new class... good.

class class1   property string  end class  class class2  inherits class1   property b string  end class  dim mytest new class2  mytest.a = "bleh" mytest.b = "bah" 

how add properties child class inside class inheriting?

class class3   property string   class class3_1    property c string  end class  end class 

how create new class enherits class3, add property class3_1, inside new enherited class?

new edit actual non working code

public class testclass      public class class1          property x string         property firstchildclass new class1_1          public class class1_1             property string         end class      end class      public class inherited_class1         inherits class1          public class class1_1  '///// warning here use "shadows" keyword.. not work... takes away warning, still cant access property b when using new instance of class             property b string         end class      end class      sub test()          dim mytestclass new inherited_class1          mytestclass.firstchildclass.b = "blah" '///// not work...      end sub  end class 

just include containing class in inheritance of sub class. have separately inherit containing class , sub class:

public class inherited_class1     inherits class1      public class class1_2         inherits class1_1         public property b() string     end class  end class   public sub test()     dim mytestclass new inherited_class1()      dim ic new inherited_class1.class1_2()     mytestclass.firstchildclass = ic     ic.b = "blah"     '''//// not work... end sub