ContextItemManager.Contains Method
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| Contains(Type) |
When overridden in a derived class, returns a value that indicates whether the item manager contains an item of the specified type. |
| Contains<TItemType>() |
Returns a value that indicates whether the item manager contains an item of the specified type. |
When overridden in a derived class, returns a value that indicates whether the item manager contains an item of the specified type.
public:
abstract bool Contains(Type ^ itemType);public abstract bool Contains(Type itemType);abstract member Contains : Type -> boolPublic MustOverride Function Contains (itemType As Type) As BooleanParameters
- itemType
- Type
The type of item to check for.
Returns
true if the context contains an instance of the specified item type; otherwise, false.
Exceptions
itemType is null.
Applies to
.NET Framework 4.8.1 and other versions
| Product | Versions |
|---|---|
| .NET Framework | 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
Returns a value that indicates whether the item manager contains an item of the specified type.
public:
generic <typename TItemType>
where TItemType : System::Activities::Presentation::ContextItem bool Contains();public bool Contains<TItemType>() where TItemType : System.Activities.Presentation.ContextItem;member this.Contains : unit -> bool (requires 'ItemType :> System.Activities.Presentation.ContextItem)Public Function Contains(Of TItemType As ContextItem) () As BooleanType Parameters
- TItemType
The type of item to check for.
Returns
true if the context contains an instance of the specified item type; otherwise, false.
Remarks
This generic method invokes the abstract Contains method, which must be implemented for this method to provide the type checking functionality.
Applies to
.NET Framework 4.8.1 and other versions
| Product | Versions |
|---|---|
| .NET Framework | 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
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