Selection Class
Represents a set of objects selected by a user in a designer.
Inheritance Hierarchy
System.Object
Microsoft.Windows.Design.ContextItem
Microsoft.Windows.Design.Interaction.Selection
Namespace: Microsoft.Windows.Design.Interaction
Assembly: Microsoft.Windows.Design.Interaction (in Microsoft.Windows.Design.Interaction.dll)
Syntax
'Declaration
Public Class Selection _
Inherits ContextItem
public class Selection : ContextItem
public ref class Selection : public ContextItem
type Selection =
class
inherit ContextItem
end
public class Selection extends ContextItem
The Selection type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
.gif "Public method") |
Selection() | Initializes a new instance of the Selection class. |
|
Selection(IEnumerable) | Initializes a new instance of the Selection class with the specified enumeration of objects. |
|
Selection(array<ModelItem[]) | Initializes a new instance of the Selection class with the specified array of ModelItem objects. |
|
Selection(IEnumerable<ModelItem>) | Initializes a new instance of the Selection class with the specified enumeration of ModelItem objects. |
|
Selection(IEnumerable, Predicate<ModelItem>) | Initializes a new instance of the Selection class with the specified enumeration of objects and predicate. |
|
Selection(IEnumerable<ModelItem>, Predicate<ModelItem>) | Initializes a new instance of the Selection class by using the specified enumeration of ModelItem objects and predicate. |
Top
Properties
| Name | Description | |
|---|---|---|
.gif "Public property") |
ItemType | Gets the type of Selection. (Overrides ContextItem.ItemType.) |
|
PrimarySelection | Gets the primary selection object. |
|
SelectedObjects | Gets an enumeration of the objects in the selection. |
|
SelectionCount | Gets the number of objects in the selection. |
|
ViewSelection | Gets a selection that contains model items that provide a view. |
Top
Methods
| Name | Description | |
|---|---|---|
|
Equals | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
.gif "Protected method") |
Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
|
GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
|
GetType | Gets the Type of the current instance. (Inherited from Object.) |
|
MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
|
OnItemChanged | Called on a context item before it is stored in the context item manager. (Inherited from ContextItem.) |
|
ToString | Returns a string that represents the current object. (Inherited from Object.) |
Top
Remarks
The concept of selection is different for different types of designers. When a user selects objects in a designer, there are some standard behaviors the designer should exhibit. For example, the user should be able to select an object, select multiple objects, cancel the selection of objects, and select all objects. You can use extensibility to control how the user selects objects in the designer.
Note
Other types of selection that are not covered here include text selection, where a range of text on an object is selected, and point selection, where one or more points on a curve are selected. Complex selection patterns, such as dragging a rectangle to select several objects, are handled by the TaskProvider providers of those objects.
When multiple objects are selected in a designer, one object is the primary selection object. The primary selection object is often used as a key for other behaviors. For example, to align all selected objects to the left, the primary selection object determines where to align the objects.
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
See Also
Reference
Microsoft.Windows.Design.Interaction Namespace