SelectionOperations.Union Method
Processes a request to programmatically add an object in the designer to the existing selection.
Namespace: Microsoft.Windows.Design.Interaction
Assembly: Microsoft.Windows.Design.Interaction (in Microsoft.Windows.Design.Interaction.dll)
Syntax
'Declaration
Public Shared Function Union ( _
context As EditingContext, _
itemToAdd As ModelItem _
) As Selection
public static Selection Union(
EditingContext context,
ModelItem itemToAdd
)
public:
static Selection^ Union(
EditingContext^ context,
ModelItem^ itemToAdd
)
static member Union :
context:EditingContext *
itemToAdd:ModelItem -> Selection
public static function Union(
context : EditingContext,
itemToAdd : ModelItem
) : Selection
Parameters
- context
Type: Microsoft.Windows.Design.EditingContext
The current editing context.
- itemToAdd
Type: Microsoft.Windows.Design.Model.ModelItem
The object to select.
Return Value
Type: Microsoft.Windows.Design.Interaction.Selection
A new selection containing the new object, or the existing selection. See the remarks section for more information.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | context or itemToAdd is nulla null reference (Nothing in Visual Basic). |
Remarks
If the specified object is already selected, this method promotes the object to be the primary selection object. This command does not clear any previous selection. To clear the previous selection, use the Select or SelectOnly methods instead.
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.
See Also
Reference
Microsoft.Windows.Design.Interaction Namespace