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WinForms Control / Tutorials / Cloning a custom entity
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    Cloning a custom entity
    In This Topic

    This article explains how to clone a custom Line entity. Custom entities can be easily cloned adding the protected copy constructor and overriding the Clone() method. A complete example follows.

     

    class MyLine : Line
{
   private float price;

   public MyLine(double x1, double y1, double x2, double y2, float thePrice)
      : base(x1, y1, x2, y2)
   {
      price = thePrice;
   }

   protected MyLine(MyLine another)
      : base(another)
   {
      price = another.price;
   }

   public override object Clone()
   {
      return new MyLine(this);
   }
}
    Class MyLine
   Inherits Line

   Private price As Single

   Public Sub New(x1 As Double, y1 As Double, x2 As Double, y2 As Double, thePrice As Single)
      MyBase.New(x1, y1, x2, y2)
      price = thePrice
   End Sub

   Public Sub New(another As MyLine)
      MyBase.New(another)
      price = another.price
   End Sub

   Public Overrides Function Clone() As Object
      Return New MyLine(Me)
   End Function

End Class

     

     

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