ContextItemManager.GetValue Method

Definition

Namespace:

System.Activities.Presentation

Assembly:

System.Activities.Presentation.dll

Overloads

GetValue(Type)	When overridden in a derived class, returns an instance of the requested item type. If there is no context item with the given type, an empty item will be created.
GetValue<TItemType>()	Returns an instance of the requested item type. If there is no context item with the given type, an empty item will be created.

GetValue(Type)

When overridden in a derived class, returns an instance of the requested item type. If there is no context item with the given type, an empty item will be created.

public:
 abstract System::Activities::Presentation::ContextItem ^ GetValue(Type ^ itemType);

public abstract System.Activities.Presentation.ContextItem GetValue (Type itemType);

abstract member GetValue : Type -> System.Activities.Presentation.ContextItem

Public MustOverride Function GetValue (itemType As Type) As ContextItem

Parameters

itemType

Type

The type of item to return.

Returns

ContextItem

Returns ContextItem, which contains a context item of the requested type. If there is no item in the context for this type, a default one is created.

Exceptions

ArgumentNullException

itemType is null.

GetValue<TItemType>()

Returns an instance of the requested item type. If there is no context item with the given type, an empty item will be created.

public:
generic <typename TItemType>
 where TItemType : System::Activities::Presentation::ContextItem TItemType GetValue();

public TItemType GetValue<TItemType> () where TItemType : System.Activities.Presentation.ContextItem;

member this.GetValue : unit -> 'ItemType (requires 'ItemType :> System.Activities.Presentation.ContextItem)

Public Function GetValue(Of TItemType As ContextItem) () As TItemType

Type Parameters

TItemType

The type of item to return.

Returns

TItemType

Returns ContextItem, which contains a context item of the requested type. If there is no item in the context for this type, a default one is created.

Remarks

This generic method invokes the abstract GetValue method, which must be implemented for this method to provide the get type functionality.