ContextItemManager.Contains Method

[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]

When overridden in a derived class, returns a Boolean value that indicates whether the item manager contains an item of the specified type.

Namespace:  System.Activities.Design
Assembly:  System.Activities.Design.Base (in System.Activities.Design.Base.dll)

Syntax

'Declaration
Public MustOverride Function Contains ( _
    itemType As Type _
) As Boolean
'Usage
Dim instance As ContextItemManager
Dim itemType As Type
Dim returnValue As Boolean

returnValue = instance.Contains(itemType)
public abstract bool Contains(
    Type itemType
)
public:
virtual bool Contains(
    Type^ itemType
) abstract
public abstract function Contains(
    itemType : Type
) : boolean
abstract Contains : 
        itemType:Type -> bool 

Parameters

  • itemType
    Type: System.Type
    The type of item to check.

Return Value

Type: System.Boolean
true if the context contains an instance of the specified item type; otherwise, false.

Exceptions

Exception Condition
ArgumentNullException

itemType is nulla null reference (Nothing in Visual Basic).

.NET Framework Security

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 4

See Also

Reference

ContextItemManager Class

ContextItemManager Members

System.Activities.Design Namespace