Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / WebControls / ColumnCollection.cs / 1 / ColumnCollection.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System; using System.Collections; using System.ComponentModel; using System.Web.UI; using System.Security.Permissions; ////// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public sealed class DataGridColumnCollection : ICollection, IStateManager { private DataGrid owner; private ArrayList columns; private bool marked; ///Represents the collection of columns to be displayed in /// a ////// control. /// public DataGridColumnCollection(DataGrid owner, ArrayList columns) { this.owner = owner; this.columns = columns; } ///Initializes a new instance of ///class. /// [ Browsable(false) ] public int Count { get { return columns.Count; } } ///Gets the number of columns in the collection. This property is read-only. ////// [ Browsable(false) ] public bool IsReadOnly { get { return false; } } ///Gets a value that specifies whether items in the ///can be /// modified. This property is read-only. /// [ Browsable(false) ] public bool IsSynchronized { get { return false; } } ///Gets a value that indicates whether the ///is thread-safe. This property is read-only. /// [ Browsable(false) ] public Object SyncRoot { get { return this; } } ///Gets the object used to synchronize access to the collection. This property is read-only. ////// [ Browsable(false) ] public DataGridColumn this[int index] { get { return (DataGridColumn)columns[index]; } } ///Gets a ///at the specified index in the /// collection. /// public void Add(DataGridColumn column) { AddAt(-1, column); } ///Appends a ///to the collection. /// public void AddAt(int index, DataGridColumn column) { if (column == null) { throw new ArgumentNullException("column"); } if (index == -1) { columns.Add(column); } else { columns.Insert(index, column); } column.SetOwner(owner); if (marked) ((IStateManager)column).TrackViewState(); OnColumnsChanged(); } ///Inserts a ///to the collection /// at the specified index. /// public void Clear() { columns.Clear(); OnColumnsChanged(); } ///Empties the collection of all ///objects. /// public void CopyTo(Array array, int index) { if (array == null) { throw new ArgumentNullException("array"); } for (IEnumerator e = this.GetEnumerator(); e.MoveNext();) array.SetValue(e.Current, index++); } ///Copies the contents of the entire collection into an ///appending at /// the specified index of the . /// public IEnumerator GetEnumerator() { return columns.GetEnumerator(); } ///Creates an enumerator for the ///used to iterate through the collection. /// public int IndexOf(DataGridColumn column) { if (column != null) { return columns.IndexOf(column); } return -1; } ///Returns the index of the first occurrence of a value in a ///. /// private void OnColumnsChanged() { if (owner != null) { owner.OnColumnsChanged(); } } ////// public void RemoveAt(int index) { if ((index >= 0) && (index < Count)) { columns.RemoveAt(index); OnColumnsChanged(); } else { throw new ArgumentOutOfRangeException("index"); } } ///Removes a ///from the collection at the specified /// index. /// public void Remove(DataGridColumn column) { int index = IndexOf(column); if (index >= 0) { RemoveAt(index); } } ///Removes the specified ///from the collection. /// /// Return true if tracking state changes. /// bool IStateManager.IsTrackingViewState { get { return marked; } } ////// /// Load previously saved state. /// void IStateManager.LoadViewState(object savedState) { if (savedState != null) { object[] columnsState = (object[])savedState; if (columnsState.Length == columns.Count) { for (int i = 0; i < columnsState.Length; i++) { if (columnsState[i] != null) { ((IStateManager)columns[i]).LoadViewState(columnsState[i]); } } } } } ////// /// Start tracking state changes. /// void IStateManager.TrackViewState() { marked = true; int columnCount = columns.Count; for (int i = 0; i < columnCount; i++) { ((IStateManager)columns[i]).TrackViewState(); } } ////// /// Return object containing state changes. /// object IStateManager.SaveViewState() { int columnCount = columns.Count; object[] columnsState = new object[columnCount]; bool savedState = false; for (int i = 0; i < columnCount; i++) { columnsState[i] = ((IStateManager)columns[i]).SaveViewState(); if (columnsState[i] != null) savedState = true; } return savedState ? columnsState : null; } } } // 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
- CompoundFileStorageReference.cs
- HitTestDrawingContextWalker.cs
- SharedPersonalizationStateInfo.cs
- GorillaCodec.cs
- PassportAuthenticationEventArgs.cs
- ExplicitDiscriminatorMap.cs
- TemplateGroupCollection.cs
- ImageAutomationPeer.cs
- ArcSegment.cs
- QilReplaceVisitor.cs
- RankException.cs
- TransformPattern.cs
- DrawListViewItemEventArgs.cs
- QilXmlWriter.cs
- IChannel.cs
- ComplexPropertyEntry.cs
- SymbolTable.cs
- ListViewInsertEventArgs.cs
- BmpBitmapEncoder.cs
- ScalarConstant.cs
- OleDbError.cs
- ListViewUpdateEventArgs.cs
- SequentialUshortCollection.cs
- EncryptedType.cs
- QueryProcessor.cs
- Page.cs
- ChildTable.cs
- Asn1IntegerConverter.cs
- LingerOption.cs
- QueryConverter.cs
- ProcessHostServerConfig.cs
- EventSetter.cs
- DataGridViewCellEventArgs.cs
- ProfileService.cs
- HttpApplication.cs
- _CookieModule.cs
- WebPartTransformerCollection.cs
- DependentList.cs
- ObjectDataProvider.cs
- ProjectionPathSegment.cs
- StandardBindingImporter.cs
- TextRenderer.cs
- ResourceDescriptionAttribute.cs
- CompiledXpathExpr.cs
- SequenceDesignerAccessibleObject.cs
- DiscardableAttribute.cs
- EncryptedReference.cs
- MetadataItemEmitter.cs
- TriggerActionCollection.cs
- RawStylusSystemGestureInputReport.cs
- StrongNameIdentityPermission.cs
- Int32Rect.cs
- ContentOperations.cs
- Stacktrace.cs
- PermissionSetTriple.cs
- ChunkedMemoryStream.cs
- UserInitiatedRoutedEventPermissionAttribute.cs
- WebPartAddingEventArgs.cs
- InstalledVoice.cs
- KeyInterop.cs
- QilPatternFactory.cs
- DataAccessor.cs
- DbDataAdapter.cs
- ServiceReference.cs
- PublishLicense.cs
- CompareValidator.cs
- Adorner.cs
- HyperLinkDataBindingHandler.cs
- FormatConvertedBitmap.cs
- BinaryObjectInfo.cs
- DataBindingCollection.cs
- InvalidCastException.cs
- ProfileSection.cs
- XamlRtfConverter.cs
- LabelTarget.cs
- ShaperBuffers.cs
- JsonQueryStringConverter.cs
- EncoderParameter.cs
- TriggerActionCollection.cs
- ColumnCollectionEditor.cs
- SizeIndependentAnimationStorage.cs
- UrlMappingCollection.cs
- NotificationContext.cs
- OptimizedTemplateContentHelper.cs
- CodeComment.cs
- DecodeHelper.cs
- X500Name.cs
- WriteableBitmap.cs
- ContractMapping.cs
- securitycriticaldataClass.cs
- CopyOnWriteList.cs
- MultiSelectRootGridEntry.cs
- CurrentTimeZone.cs
- TreeNodeCollection.cs
- Compiler.cs
- XmlCDATASection.cs
- LoggedException.cs
- CfgSemanticTag.cs
- EncoderBestFitFallback.cs
- DataGridToolTip.cs