c# 4.0 - What is Activator.CreateInstance? How its working? -


please find below code. can 1 tell me how activator.createinstance working abstract class? have created abstract class, in abstract class have 1 abstract method , inheritted in normal 3 different classes. class mentioned returned correct value, want know how working? advance

using system; using system.collections.generic; using system.linq; using system.text;  namespace sample_app {     abstract class absclass     {         public abstract int addtwonumbers();      } class firstclass : absclass {     public override int addtwonumbers()     {         return 1 + 2;     } }  class secondclass : absclass {     public override int addtwonumbers()     {         return 3 + 2;     } }  class thirdclass : absclass {     public override int addtwonumbers()     {         return 3 + 2;     } }  class program {     static void main(string[] args)     {         type classtype = type.gettype("sample_app.firstclass");         absclass obj = activator.createinstance(classtype) absclass;         int = obj.addtwonumbers();     }   }

}


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