Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / WinForms / Managed / System / WinForms / DataGridViewCellLinkedList.cs / 1305376 / DataGridViewCellLinkedList.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System; using System.Diagnostics; using System.Collections; using System.Windows.Forms; using System.ComponentModel; ////// /// internal class DataGridViewCellLinkedList : IEnumerable { private DataGridViewCellLinkedListElement lastAccessedElement; private DataGridViewCellLinkedListElement headElement; private int count, lastAccessedIndex; ///Represents a linked list of ///objects IEnumerator IEnumerable.GetEnumerator() { return new DataGridViewCellLinkedListEnumerator(this.headElement); } /// public DataGridViewCellLinkedList() { this.lastAccessedIndex = -1; } /// public DataGridViewCell this[int index] { get { Debug.Assert(index >= 0); Debug.Assert(index < this.count); if (this.lastAccessedIndex == -1 || index < this.lastAccessedIndex) { DataGridViewCellLinkedListElement tmp = this.headElement; int tmpIndex = index; while (tmpIndex > 0) { tmp = tmp.Next; tmpIndex--; } this.lastAccessedElement = tmp; this.lastAccessedIndex = index; return tmp.DataGridViewCell; } else { while (this.lastAccessedIndex < index) { this.lastAccessedElement = this.lastAccessedElement.Next; this.lastAccessedIndex++; } return this.lastAccessedElement.DataGridViewCell; } } } /// public int Count { get { return this.count; } } /// public DataGridViewCell HeadCell { get { Debug.Assert(this.headElement != null); return this.headElement.DataGridViewCell; } } /// public void Add(DataGridViewCell dataGridViewCell) { Debug.Assert(dataGridViewCell != null); Debug.Assert(dataGridViewCell.DataGridView.SelectionMode == DataGridViewSelectionMode.CellSelect || dataGridViewCell.DataGridView.SelectionMode == DataGridViewSelectionMode.ColumnHeaderSelect || dataGridViewCell.DataGridView.SelectionMode == DataGridViewSelectionMode.RowHeaderSelect); DataGridViewCellLinkedListElement newHead = new DataGridViewCellLinkedListElement(dataGridViewCell); if (this.headElement != null) { newHead.Next = this.headElement; } this.headElement = newHead; this.count++; this.lastAccessedElement = null; this.lastAccessedIndex = -1; } /// public void Clear() { this.lastAccessedElement = null; this.lastAccessedIndex = -1; this.headElement = null; this.count = 0; } /// public bool Contains(DataGridViewCell dataGridViewCell) { Debug.Assert(dataGridViewCell != null); int index = 0; DataGridViewCellLinkedListElement tmp = this.headElement; while (tmp != null) { if (tmp.DataGridViewCell == dataGridViewCell) { this.lastAccessedElement = tmp; this.lastAccessedIndex = index; return true; } tmp = tmp.Next; index++; } return false; } /// public bool Remove(DataGridViewCell dataGridViewCell) { Debug.Assert(dataGridViewCell != null); DataGridViewCellLinkedListElement tmp1 = null, tmp2 = this.headElement; while (tmp2 != null) { if (tmp2.DataGridViewCell == dataGridViewCell) { break; } tmp1 = tmp2; tmp2 = tmp2.Next; } if (tmp2.DataGridViewCell == dataGridViewCell) { DataGridViewCellLinkedListElement tmp3 = tmp2.Next; if (tmp1 == null) { this.headElement = tmp3; } else { tmp1.Next = tmp3; } this.count--; this.lastAccessedElement = null; this.lastAccessedIndex = -1; return true; } return false; } /* Unused for now /// public DataGridViewCell RemoveHead() { if (this.headElement == null) { return null; } DataGridViewCellLinkedListElement tmp = this.headElement; this.headElement = tmp.Next; this.count--; this.lastAccessedElement = null; this.lastAccessedIndex = -1; return tmp.DataGridViewCell; } */ /// public int RemoveAllCellsAtBand(bool column, int bandIndex) { int removedCount = 0; DataGridViewCellLinkedListElement tmp1 = null, tmp2 = this.headElement; while (tmp2 != null) { if ((column && tmp2.DataGridViewCell.ColumnIndex == bandIndex) || (!column && tmp2.DataGridViewCell.RowIndex == bandIndex)) { DataGridViewCellLinkedListElement tmp3 = tmp2.Next; if (tmp1 == null) { this.headElement = tmp3; } else { tmp1.Next = tmp3; } tmp2 = tmp3; this.count--; this.lastAccessedElement = null; this.lastAccessedIndex = -1; removedCount++; } else { tmp1 = tmp2; tmp2 = tmp2.Next; } } return removedCount; } } /// /// /// internal class DataGridViewCellLinkedListEnumerator : IEnumerator { private DataGridViewCellLinkedListElement headElement; private DataGridViewCellLinkedListElement current; private bool reset; ///Represents an emunerator of elements in a ///linked list. public DataGridViewCellLinkedListEnumerator(DataGridViewCellLinkedListElement headElement) { this.headElement = headElement; this.reset = true; } /// object IEnumerator.Current { get { Debug.Assert(this.current != null); // Since this is for internal use only. return this.current.DataGridViewCell; } } /// bool IEnumerator.MoveNext() { if (this.reset) { Debug.Assert(this.current == null); this.current = this.headElement; this.reset = false; } else { Debug.Assert(this.current != null); // Since this is for internal use only. this.current = this.current.Next; } return (this.current != null); } /// void IEnumerator.Reset() { this.reset = true; this.current = null; } } /// /// /// internal class DataGridViewCellLinkedListElement { private DataGridViewCell dataGridViewCell; private DataGridViewCellLinkedListElement next; ///Represents an element in a ///linked list. public DataGridViewCellLinkedListElement(DataGridViewCell dataGridViewCell) { Debug.Assert(dataGridViewCell != null); this.dataGridViewCell = dataGridViewCell; } /// public DataGridViewCell DataGridViewCell { get { return this.dataGridViewCell; } } /// public DataGridViewCellLinkedListElement Next { get { return this.next; } set { this.next = value; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- VirtualPathProvider.cs
- SeekStoryboard.cs
- MexHttpsBindingElement.cs
- XmlSchemaSequence.cs
- MimeFormatExtensions.cs
- TypedDataSetSchemaImporterExtension.cs
- DispatcherEventArgs.cs
- TrackBarRenderer.cs
- SaveFileDialogDesigner.cs
- MultiBinding.cs
- TextProperties.cs
- AppDomainFactory.cs
- ContextStack.cs
- Journal.cs
- Cursors.cs
- BorderGapMaskConverter.cs
- DocComment.cs
- DefaultWorkflowTransactionService.cs
- LoginName.cs
- ConditionCollection.cs
- IDQuery.cs
- ResourceAttributes.cs
- ControllableStoryboardAction.cs
- RemoteDebugger.cs
- SettingsSavedEventArgs.cs
- RoutedEventConverter.cs
- ArgumentsParser.cs
- Helper.cs
- WebProxyScriptElement.cs
- OdbcCommandBuilder.cs
- DynamicQueryStringParameter.cs
- ListViewItemMouseHoverEvent.cs
- ExternalFile.cs
- InputMethod.cs
- SkinBuilder.cs
- Imaging.cs
- Light.cs
- AttributedMetaModel.cs
- XmlCodeExporter.cs
- CaseStatement.cs
- ThreadStateException.cs
- SqlFacetAttribute.cs
- EncodingNLS.cs
- ValueCollectionParameterReader.cs
- WebPartManagerDesigner.cs
- DateTimeOffsetConverter.cs
- OdbcParameter.cs
- EntityKey.cs
- GridToolTip.cs
- WindowsSysHeader.cs
- RangeValueProviderWrapper.cs
- Pair.cs
- ObjectSecurityT.cs
- XamlStream.cs
- CachedBitmap.cs
- ScriptRegistrationManager.cs
- JsonFormatReaderGenerator.cs
- EventLogPermissionEntryCollection.cs
- TrackingStringDictionary.cs
- CustomValidator.cs
- PersonalizableAttribute.cs
- TypeNameParser.cs
- FileDataSourceCache.cs
- AttributeCollection.cs
- Vector3DIndependentAnimationStorage.cs
- EncodingDataItem.cs
- ItemList.cs
- SingleObjectCollection.cs
- TextInfo.cs
- AuthStoreRoleProvider.cs
- EntityType.cs
- ContentHostHelper.cs
- ListViewAutomationPeer.cs
- OperatingSystem.cs
- CellTreeNode.cs
- MSG.cs
- HttpPostClientProtocol.cs
- TriggerActionCollection.cs
- ObjectStateEntry.cs
- SchemaRegistration.cs
- DataGridToolTip.cs
- TextPenaltyModule.cs
- Command.cs
- TextSimpleMarkerProperties.cs
- GiveFeedbackEvent.cs
- EventRouteFactory.cs
- SemaphoreFullException.cs
- ErrorHandlingReceiver.cs
- FontNamesConverter.cs
- StreamGeometryContext.cs
- TextServicesManager.cs
- LineBreak.cs
- AttachedProperty.cs
- WebUtil.cs
- ElementUtil.cs
- WindowsAuthenticationEventArgs.cs
- AssemblyUtil.cs
- TimeoutValidationAttribute.cs
- PrintingPermission.cs
- SizeChangedInfo.cs