ModelItemDictionary.ContainsKey Method (Object)

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Determines whether the dictionary contains the given key.

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


Public MustOverride Function ContainsKey ( _
    key As Object _
) As Boolean
Dim instance As ModelItemDictionary
Dim key As Object
Dim returnValue As Boolean

returnValue = instance.ContainsKey(key)
public abstract bool ContainsKey(
    Object key
virtual bool ContainsKey(
    Object^ key
) abstract
public abstract function ContainsKey(
    key : Object
) : boolean
abstract ContainsKey : 
        key:Object -> bool 


Return Value

Type: System.Boolean
true if the dictionary contains the given key; otherwise, false.


Exception Condition

If key is nulla null reference (Nothing in Visual Basic).

.NET Framework Security


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


ModelItemDictionary Class

ModelItemDictionary Members

ContainsKey Overload

System.Activities.Design.Model Namespace