public static LayoutView Active {get;}

{
  //Reference the active layout view.

  //Confirm if the current, active view is a layout view.
  //If it is, do something.
  LayoutView activeLayoutView = LayoutView.Active;
  if (activeLayoutView != null)
  {
    // do something
  }
}

{
  //Unselect one element.
  var elementToUnSelectInView = layout.FindElements(new List<string>() { "MyPoint" }).FirstOrDefault();
  layoutView.UnSelectElement(elementToUnSelectInView);
  //Unselect multiple elements.
  var elementsToUnSelectInView = layout.FindElements(new List<string>() { "Point 1", "Line 3", "Text 1" });
  layoutView.UnSelectElements(elementsToUnSelectInView);
}