ExtendedProperties.Contains Method (Guid)

Article
10/19/2012

Indicates whether the ExtendedProperties collection contains a specific ExtendedProperty object.

Namespace: Microsoft.Ink
Assembly: Microsoft.Ink (in Microsoft.Ink.dll)

Syntax

'Declaration
Public Function Contains ( _
    id As Guid _
) As Boolean
'Usage
Dim instance As ExtendedProperties 
Dim id As Guid 
Dim returnValue As Boolean 

returnValue = instance.Contains(id)

public bool Contains(
    Guid id
)

public:
bool Contains(
    Guid id
)

public function Contains(
    id : Guid
) : boolean

Parameters

id
Type: System.Guid

The globally unique identifier (GUID) of the ExtendedProperty object to check for.

Return Value

Type: System.Boolean
true if the ExtendedProperties collection contains a specific ExtendedProperty object; otherwise, false.

Examples

In this example, each Stroke object in a Strokes collection is examined. If the ExtendedProperties of the Stroke contains properties associated with special timestamp Guid objects, the ExtendedProperty is removed from the collection.

Private Sub RemoveAllTimeStampProperties()
    ' STROKE_START_GUID and STROKE_END_GUID 
    ' are class level string const set via GUID generator 
    Dim strokeStartGuid As Guid = New Guid(STROKE_START_GUID)
    Dim strokeEndGuid As Guid = New Guid(STROKE_END_GUID)

    ' access the Strokes property via using statement 
    ' to insure that the object mStrokes is disposed when finished 
    ' Otherwise, you will have a memory leak 
    Using mStrokes As Strokes = mInkObject.Ink.Strokes
        For Each S As Stroke In mStrokes
            If S.ExtendedProperties.Contains(strokeStartGuid) Then
                S.ExtendedProperties.Remove(strokeStartGuid)
            End If 
            If S.ExtendedProperties.Contains(strokeEndGuid) Then
                S.ExtendedProperties.Remove(strokeEndGuid)
            End If 
        Next 
    End Using 
End Sub

private void RemoveAllTimeStampProperties()
{
    // STROKE_START_GUID and STROKE_END_GUID 
    // are class level string const set via GUID generator
    Guid strokeStartGuid = new Guid(STROKE_START_GUID);
    Guid strokeEndGuid = new Guid(STROKE_END_GUID);

    // access the Strokes property via using statement 
    // to insure that the object mStrokes is disposed when finished 
    // Otherwise, you will have a memory leak 
    using (Strokes mStrokes = mInkObject.Ink.Strokes)
    {
        foreach (Stroke S in mStrokes)
        {
            if (S.ExtendedProperties.Contains(strokeStartGuid))
            {
                S.ExtendedProperties.Remove(strokeStartGuid);
            }
            if (S.ExtendedProperties.Contains(strokeEndGuid))
            {
                S.ExtendedProperties.Remove(strokeEndGuid);
            }
        }
    }
}

Platforms

Windows 7, Windows Vista, Windows Server 2008 R2, Windows Server 2008

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: 3.0

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