Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / 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; } } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ChunkedMemoryStream.cs
- CurrentChangedEventManager.cs
- Visual.cs
- Win32.cs
- RankException.cs
- CodeDomComponentSerializationService.cs
- SmtpAuthenticationManager.cs
- WebScriptEnablingElement.cs
- TableRow.cs
- ObjectView.cs
- Dictionary.cs
- ChannelSinkStacks.cs
- _MultipleConnectAsync.cs
- ContentPosition.cs
- HttpRequest.cs
- OutputWindow.cs
- SizeValueSerializer.cs
- ModuleConfigurationInfo.cs
- IResourceProvider.cs
- ZipIORawDataFileBlock.cs
- NetPipeSection.cs
- TextWriterEngine.cs
- webproxy.cs
- DataGrid.cs
- CreateInstanceBinder.cs
- XmlLoader.cs
- BamlWriter.cs
- DBAsyncResult.cs
- IntSecurity.cs
- HwndStylusInputProvider.cs
- IOThreadScheduler.cs
- AssociationTypeEmitter.cs
- ArraySortHelper.cs
- CommandEventArgs.cs
- KnowledgeBase.cs
- HttpPostedFileBase.cs
- ItemList.cs
- DependencyObjectPropertyDescriptor.cs
- SvcMapFileLoader.cs
- Geometry.cs
- SByte.cs
- CrossSiteScriptingValidation.cs
- SQLInt64Storage.cs
- ViewManagerAttribute.cs
- ipaddressinformationcollection.cs
- TargetControlTypeCache.cs
- _AutoWebProxyScriptHelper.cs
- VBCodeProvider.cs
- Queue.cs
- PropertyEntry.cs
- NumberSubstitution.cs
- TemplateKey.cs
- latinshape.cs
- StatusBar.cs
- WebServiceResponseDesigner.cs
- DetailsViewCommandEventArgs.cs
- CardSpaceException.cs
- AllMembershipCondition.cs
- Group.cs
- XmlToDatasetMap.cs
- ChtmlImageAdapter.cs
- CqlIdentifiers.cs
- WebBrowserUriTypeConverter.cs
- TabItemWrapperAutomationPeer.cs
- SQLBytesStorage.cs
- SafeNativeMethods.cs
- TriggerBase.cs
- SQLGuid.cs
- XmlNamespaceManager.cs
- SettingsBase.cs
- MatrixConverter.cs
- MarkupWriter.cs
- ProfilePropertyNameValidator.cs
- QilCloneVisitor.cs
- XmlElement.cs
- SecurityTraceRecordHelper.cs
- RTLAwareMessageBox.cs
- FlowNode.cs
- TemplateContentLoader.cs
- FlowDocumentReaderAutomationPeer.cs
- SiteMapNode.cs
- MimeBasePart.cs
- DispatchWrapper.cs
- TimeSpanValidatorAttribute.cs
- CodeArrayCreateExpression.cs
- HttpRequest.cs
- NativeMethods.cs
- IndexOutOfRangeException.cs
- CompileLiteralTextParser.cs
- Package.cs
- DataChangedEventManager.cs
- HttpInputStream.cs
- NetTcpSecurity.cs
- AutomationTextAttribute.cs
- CalendarKeyboardHelper.cs
- UInt16Converter.cs
- ListViewUpdatedEventArgs.cs
- XhtmlBasicTextViewAdapter.cs
- TypeDescriptionProvider.cs
- ComplexObject.cs