Chapter 18 Working with C#

Property

To design a C# property you have to design an attribute with the <<Property>> stereotype.

When you do so, another attribute with the <<PropertyImplementation>> stereotype is automatically created, it is displayed with an underscore sign in the list of attributes. The corresponding getter and setter operations are also automatically created.

You can get rid of the implementation attribute.

If you remove both getter and setter operations, the attribute no longer has the <<Property>> stereotype.

When you define a <<Property>> attribute, the attribute changeability and the getter/setter operations are tightly related as explained in the following table:

On the other hand, if you modify the property changeability, operations will reflect this change, for example, if you turn a changeable property into a read-only property, the setter operation is automatically removed.

In the following example, class Employee contains 2 properties. The Setter operation has been removed for property TimeReport:

{
   public class Employee
   {
      private int _Function;
      private int _TimeReport;
      // Property Function
      private int Function
      {
         get
         {
               return _Function;
            }
         set
         {
               if (this._Function != value)
                  this._Function = value;
            }
      }
      // Property TimeReport
      private int TimeReport
      {
         get
         {
               return _TimeReport;
            }
      }
   }

The following table lists the different property modifiers supported in PowerDesigner:

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