Question

Is there a Design Pattern for supporting different permutations object?

Version 1

public class myOjbect {

  public string field1 { get; set; } /* requirements: max length 20 */
  public int field2 { get; set; }
  . . .
  public decimal field20 { get; set; }
}

Version 2

public class myObject {

  public string field1 { get; set; } /* requirements: max length 40 */
  public int field2 { get; set; }
  . . .
  public double field20 { get; set; } /* changed data types */
  . . ./* 1 new properties */
  public double field21 { get; set; } 
}

of course I could just have separate objects, but thought there might be a good pattern for this sort of thing.

Answer 1

Descending a new class MyObjectV2 from MyObject would work for modifying the behavior of field1 and adding the 10 new fields;
it would not allow modifying the nature of filed200.