ExtendedProperties.Contains 方法 (Guid)

项目
10/28/2008

指示 ExtendedProperties 集合是否包含特定的 ExtendedProperty 对象。

命名空间： Microsoft.Ink
程序集： Microsoft.Ink（在 Microsoft.Ink.dll 中）

语法

声明
Public Function Contains ( _
    id As Guid _
) As Boolean
用法
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 boolean Contains(
    Guid id
)

public function Contains(
    id : Guid
) : boolean

参数

id
类型：System.Guid
要检查的 ExtendedProperty 对象的全局唯一标识符 (GUID)。

返回值

类型：System.Boolean
如果 ExtendedProperties 集合包含特定的 ExtendedProperty 对象，则为 true；否则为 false。

示例

此示例检查 Strokes 集合中的每个 Stroke 对象。如果 Stroke 的 ExtendedProperties 包含与特殊时间戳 Guid 对象关联的属性，则从集合中移除该 ExtendedProperty。

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);
            }
        }
    }
}