Autodesk.Revit.UI.Selection

public static IList<Element> GetManyRefByRectangle(UIDocument doc)
{
    ReferenceArray ra = new ReferenceArray();
    ISelectionFilter selFilter = new MassSelectionFilter();
    IList<Element> eList = doc.Selection.PickElementsByRectangle(selFilter, 
        "Select multiple faces") as IList<Element>;
    return eList;
}

public class MassSelectionFilter : ISelectionFilter
{
    public bool AllowElement(Element element)
    {
        if (element.Category.Name == "Mass")
        {
            return true;
        }
        return false;
    }

    public bool AllowReference(Reference refer, XYZ point)
    {
        return false;
    }
}

Selection是一个非常常用的功能，码一段带选择过滤器的框选，效果是直接无视非指定类型。

Methods

	Name	Description
	Dispose	Releases all resources used by the Selection/释放内存。
	GetElementIds	Returns the ids of the elements that are currently selected. 选择得到ElementId。
	PickBox(PickBoxStyle)	Invokes a general purpose two-click editor that lets the user to specify a rectangular area on the screen.两种框选类型。
	PickBox(PickBoxStyle, String)	Invokes a general purpose two-click editor that lets the user to specify a rectangular area on the screen.在左下角增加提示。
	PickElementsByRectangle()(String)(ISelectionFilter)(ISelectionFilter, String)	Prompts the user to select multiple elements by drawing a rectangle.
	PickObject(ObjectType)	Prompts the user to select one object.
	PickObject(ObjectType, ISelectionFilter)	Prompts the user to select one object which passes a custom filter.
	PickObject(ObjectType, String)	Prompts the user to select one object while showing a custom status prompt string.
	PickObject(ObjectType, ISelectionFilter, String)	Prompts the user to select one object which passes a custom filter while showing a custom status prompt string.
	PickObjects(ObjectType)	Prompts the user to select multiple objects.
	PickObjects(ObjectType, ISelectionFilter)	Prompts the user to select multiple objects which pass a customer filter.
	PickObjects(ObjectType, String)	Prompts the user to select multiple objects while showing a custom status prompt string.
	PickObjects(ObjectType, ISelectionFilter, String)	Prompts the user to select multiple objects which pass a custom filter while showing a custom status prompt string.
	PickObjects(ObjectType, ISelectionFilter, String, IList<(Of <<'(Reference>)>>))	Prompts the user to select multiple objects which pass a custom filter while showing a custom status prompt string. A preselected set of objects may be supplied and will be selected at the start of the selection.
	PickPoint()()()()	Prompts the user to pick a point on the active work plane.
	PickPoint(String)	Prompts the user to pick a point on the active work plane while showing a custom status prompt string.
	PickPoint(ObjectSnapTypes)	Prompts the user to pick a point on the active work plane using specified snap settings.
	PickPoint(ObjectSnapTypes, String)	Prompts the user to pick a point on the active work plane using specified snap settings while showing a custom status prompt string.
	SetElementIds	Selects the elements.高亮选中状态

Properties

	Name	Description
	IsValidObject	Specifies whether the .NET object represents a valid Revit entity.