Public Overridable Sub Ungroup() 

Dim instance As AnnGroupObject
 
instance.Ungroup()

public virtual void Ungroup()

public:
virtual void Ungroup(); 

Private Sub AnnGroupObject_Ungroup()
   Dim container As AnnContainer = New AnnContainer()
   ' adds a few objects to the container
   Dim line As AnnLineObject = New AnnLineObject()
   container.Objects.Add(line)

   Dim rect As AnnRectangleObject = New AnnRectangleObject()
   container.Objects.Add(rect)

   ' show the number of objects in this container (should be 2: line and rectangle)
   Dim s As String = String.Format("There are {0} objects in the container", container.Objects.Count)

   MessageBox.Show(s)

   ' move all objects from the container to a group
   Dim group As AnnGroupObject = New AnnGroupObject()

   Do While container.Objects.Count > 0
      Dim obj As AnnObject = container.Objects(0)
      container.Objects.Remove(obj)
      group.Objects.Add(obj)
   Loop

   ' show the number of objects in this container (should be 0)
   s = String.Format("There are {0} objects in the container", container.Objects.Count)
   MessageBox.Show(s)

   ' add the group to the container
   container.Objects.Add(group)

   ' show the number of objects in this container (should be 1: group)
   s = String.Format("There are {0} objects in the container", container.Objects.Count)
   MessageBox.Show(s)

   ' ungroup the group object
   group.Ungroup()

   ' show the number of objects in this container (should be 3: group, line and rectangle)
   s = String.Format("There are {0} objects in the container", container.Objects.Count)
   MessageBox.Show(s)

   ' remove the group from the container
   container.Objects.Remove(group)

   ' show the number of objects in this container (should be 2: line and rectangle)
   s = String.Format("There are {0} objects in the container", container.Objects.Count)
   MessageBox.Show(s)
End Sub

private void AnnGroupObject_Ungroup()
{
   AnnContainer container = new AnnContainer();
   // adds a few objects to the container
   AnnLineObject line = new AnnLineObject();
   container.Objects.Add(line);

   AnnRectangleObject rect = new AnnRectangleObject();
   container.Objects.Add(rect);

   // show the number of objects in this container (should be 2: line and rectangle)
   string s = string.Format("There are {0} objects in the container", container.Objects.Count); ;
   MessageBox.Show(s);

   // move all objects from the container to a group
   AnnGroupObject group = new AnnGroupObject();

   while(container.Objects.Count > 0)
   {
      AnnObject obj = container.Objects[0];
      container.Objects.Remove(obj);
      group.Objects.Add(obj);
   }

   // show the number of objects in this container (should be 0)
   s = string.Format("There are {0} objects in the container", container.Objects.Count);
   MessageBox.Show(s);

   // add the group to the container
   container.Objects.Add(group);

   // show the number of objects in this container (should be 1: group)
   s = string.Format("There are {0} objects in the container", container.Objects.Count);
   MessageBox.Show(s);

   // ungroup the group object
   group.Ungroup();

   // show the number of objects in this container (should be 3: group, line and rectangle)
   s = string.Format("There are {0} objects in the container", container.Objects.Count);
   MessageBox.Show(s);

   // remove the group from the container
   container.Objects.Remove(group);

   // show the number of objects in this container (should be 2: line and rectangle)
   s = string.Format("There are {0} objects in the container", container.Objects.Count);
   MessageBox.Show(s);
}