c# - Hide SortedList's .Add method vs using another method name with base.Add -

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i have custom class sortedlist few properties , methods. additional processing when new key/value pair added (i.e when .add method called). can hide .add method or use method name (ex:.addpair) , call base.add in method. preferred approach? why?

hide .add method:

using system; using system.collections.generic; using system.linq; using system.text;     namespace inheritence_test {     class program     {         static void main(string[] args)         {             dyseries d = new dyseries() { fieldname = "test" };             d.add(new datetime(2010, 12, 1), 2345);             d.add(new datetime(2010, 12, 5), 2340);             d.add(new datetime(2010, 12, 2), 2343);             console.writeline("fieldname {0} \n count {1} \n max {2} \n min {3}", d.fieldname, d.count(), d.keys.max(), d.keys.min());         }     }     class dyseries : sortedlist<datetime, double>     {         public string fieldname { get; set; }         new public void add(datetime date, double value)         {             base.add(date,value);             // additional processing here             console.writeline("added date {0}.\n   max date: {1}",date, this.keys.max());         }      } }

or

using method name:

class program     {         static void main(string[] args)         {             dyseries d = new dyseries() { fieldname = "test" };             d.addpair(new datetime(2010, 12, 1), 2345);             d.addpair(new datetime(2010, 12, 5), 2340);             d.addpair(new datetime(2010, 12, 2), 2343);             d.addpair(new datetime(2010, 12, 9), 2348);             console.writeline("fieldname {0} \n count {1} \n max {2} \n min {3}", d.fieldname, d.count(), d.keys.max(), d.keys.min());         }     }     class dyseries : sortedlist<datetime, double>     {         public string fieldname { get; set; }         public void addpair(datetime date, double value)         {             base.add(date,value);             // additional processing here             console.writeline("added date {0}.\n   max date: {1}",date, this.keys.max());         }      }

is there preferred approach? 1 approach (hiding?) potentially cause problems?

use second approach. first breaks oo design, , you're not going sure if method called or base class. consider use of class:

sortedlist<datetime, double> mylist = new dyseries(); mylist.add(date, value);  // call base, not implementation!

i've never come across valid reason use new; there other ways acomplish want without breaking oo design.


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