Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Base / System / Windows / LocalValueEnumerator.cs / 1305600 / LocalValueEnumerator.cs
using System; using System.Collections; using System.Diagnostics; using MS.Internal.WindowsBase; #pragma warning disable 1634, 1691 // suppressing PreSharp warnings namespace System.Windows { ////// Local value enumeration object /// ////// Modifying local values (via SetValue or ClearValue) during enumeration /// is unsupported /// public struct LocalValueEnumerator : IEnumerator { ////// Overrides Object.GetHashCode /// ///An integer that represents the hashcode for this object public override int GetHashCode() { return base.GetHashCode(); } ////// Determine equality /// public override bool Equals(object obj) { if(obj is LocalValueEnumerator) { LocalValueEnumerator other = (LocalValueEnumerator) obj; return (_count == other._count && _index == other._index && _snapshot == other._snapshot); } else { // being compared against something that isn't a LocalValueEnumerator. return false; } } ////// Determine equality /// public static bool operator ==(LocalValueEnumerator obj1, LocalValueEnumerator obj2) { return obj1.Equals(obj2); } ////// Determine inequality /// public static bool operator !=(LocalValueEnumerator obj1, LocalValueEnumerator obj2) { return !(obj1 == obj2); } ////// Get current entry /// public LocalValueEntry Current { get { if(_index == -1 ) { #pragma warning suppress 6503 // IEnumerator.Current is documented to throw this exception throw new InvalidOperationException(SR.Get(SRID.LocalValueEnumerationReset)); } if(_index >= Count ) { #pragma warning suppress 6503 // IEnumerator.Current is documented to throw this exception throw new InvalidOperationException(SR.Get(SRID.LocalValueEnumerationOutOfBounds)); } return _snapshot[_index]; } } ////// Get current entry (object reference based) /// object IEnumerator.Current { get { return Current; } } ////// Move to the next item in the enumerator /// ///Success of the method public bool MoveNext() { _index++; return _index < Count; } ////// Reset enumeration /// public void Reset() { _index = -1; } ////// Return number of items represented in the collection /// public int Count { get { return _count; } } internal LocalValueEnumerator(LocalValueEntry[] snapshot, int count) { _index = -1; _count = count; _snapshot = snapshot; } private int _index; private LocalValueEntry[] _snapshot; private int _count; } ////// Represents a Property-Value pair for local value enumeration /// public struct LocalValueEntry { ////// Overrides Object.GetHashCode /// ///An integer that represents the hashcode for this object public override int GetHashCode() { return base.GetHashCode(); } ////// Determine equality /// public override bool Equals(object obj) { LocalValueEntry other = (LocalValueEntry) obj; return (_dp == other._dp && _value == other._value); } ////// Determine equality /// public static bool operator ==(LocalValueEntry obj1, LocalValueEntry obj2) { return obj1.Equals(obj2); } ////// Determine inequality /// public static bool operator !=(LocalValueEntry obj1, LocalValueEntry obj2) { return !(obj1 == obj2); } ////// Dependency property /// public DependencyProperty Property { get { return _dp; } } ////// Value of the property /// public object Value { get { return _value; } } internal LocalValueEntry(DependencyProperty dp, object value) { _dp = dp; _value = value; } // Internal here because we need to change these around when building // the snapshot for the LocalValueEnumerator, and we can't make internal // setters when we have public getters. internal DependencyProperty _dp; internal object _value; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- EDesignUtil.cs
- MergeLocalizationDirectives.cs
- CombinedGeometry.cs
- ProcessThreadCollection.cs
- RemoteCryptoRsaServiceProvider.cs
- DataConnectionHelper.cs
- JavaScriptObjectDeserializer.cs
- FixedSOMTable.cs
- QilVisitor.cs
- WhiteSpaceTrimStringConverter.cs
- ZeroOpNode.cs
- InProcStateClientManager.cs
- RectangleConverter.cs
- BitmapFrame.cs
- UpdatePanelControlTrigger.cs
- GridItemProviderWrapper.cs
- SubMenuStyleCollectionEditor.cs
- DependencyObject.cs
- TaskFormBase.cs
- TableRow.cs
- PathSegment.cs
- StatusBarAutomationPeer.cs
- SoapIgnoreAttribute.cs
- EventLogLink.cs
- BooleanToVisibilityConverter.cs
- MenuTracker.cs
- TypeConstant.cs
- ParenthesizePropertyNameAttribute.cs
- ActionMessageFilter.cs
- FamilyCollection.cs
- ParameterToken.cs
- UnsignedPublishLicense.cs
- AQNBuilder.cs
- SafeIUnknown.cs
- ClickablePoint.cs
- ErrorTolerantObjectWriter.cs
- MouseActionConverter.cs
- UIntPtr.cs
- CheckBoxAutomationPeer.cs
- ImpersonationContext.cs
- SpeakInfo.cs
- DataGridViewCellParsingEventArgs.cs
- DecoderExceptionFallback.cs
- EditorZone.cs
- ListViewItem.cs
- PointLightBase.cs
- RegisteredScript.cs
- TdsParameterSetter.cs
- FlagsAttribute.cs
- ParentQuery.cs
- Item.cs
- AnimationLayer.cs
- Line.cs
- EntityContainer.cs
- MouseWheelEventArgs.cs
- PeerNameRecordCollection.cs
- TaskHelper.cs
- NonBatchDirectoryCompiler.cs
- TimeManager.cs
- PropertyGroupDescription.cs
- BooleanAnimationBase.cs
- handlecollector.cs
- DynamicDocumentPaginator.cs
- ObjectStorage.cs
- ListViewDataItem.cs
- PlatformNotSupportedException.cs
- ParameterBuilder.cs
- DetailsViewUpdateEventArgs.cs
- XmlSchemaSimpleContent.cs
- NumberSubstitution.cs
- TabControlAutomationPeer.cs
- StrokeNodeOperations.cs
- DragDrop.cs
- MouseWheelEventArgs.cs
- DnsPermission.cs
- Ref.cs
- _SSPIWrapper.cs
- MetadataCollection.cs
- DrawingGroup.cs
- RemoteAsymmetricSignatureFormatter.cs
- EventWaitHandleSecurity.cs
- StorageMappingItemCollection.cs
- SimpleTypeResolver.cs
- AnnouncementService.cs
- Membership.cs
- MessagingActivityHelper.cs
- SafeViewOfFileHandle.cs
- PasswordRecoveryDesigner.cs
- Quad.cs
- StrokeFIndices.cs
- WebPartAuthorizationEventArgs.cs
- AsyncOperationManager.cs
- CounterCreationDataCollection.cs
- SqlDataSourceCache.cs
- PackagePartCollection.cs
- SimplePropertyEntry.cs
- Normalization.cs
- XPathNavigatorKeyComparer.cs
- DomNameTable.cs
- InputScope.cs