What is the best practice when implementing a data transfer facility or POCO? What should your POCO look like?

Question

Which of the following is the best way to implement poco?

Option 1:

public class PocoOption1
{
  public PocoOption1(int val1,string val2)
  {
    Val1=val1; Val2=val2;
  }

  public int Val1{get;private set;}
  public int Val2{get;private set;}
}

Option 2:

public class PocoOption2
{           
  public int Val1{get;set;}
  public int Val2{get;set;}
}

What are the potential benefits of each approach? Does it matter? Some people say that DTO should be installed only once. Is this a rule or just an opinion?

Answer 1

The options are slightly different. Option 1 allows you to install Val1, Val2 only once. Option 2 allows you to set and reset those values.

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Answer 2

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