Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / WebControls / ColumnCollection.cs / 1305376 / 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; ////// 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.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- AssemblyBuilder.cs
- CubicEase.cs
- VirtualDirectoryMapping.cs
- SchemaImporterExtension.cs
- FrameworkReadOnlyPropertyMetadata.cs
- ExpressionList.cs
- ListViewGroupItemCollection.cs
- PasswordBox.cs
- LogRecordSequence.cs
- DispatchWrapper.cs
- XmlAttributeOverrides.cs
- HostProtectionPermission.cs
- RecipientIdentity.cs
- CompleteWizardStep.cs
- externdll.cs
- StandardTransformFactory.cs
- FormViewInsertEventArgs.cs
- Funcletizer.cs
- Property.cs
- RecordConverter.cs
- WsdlHelpGeneratorElement.cs
- SkinBuilder.cs
- CodeArgumentReferenceExpression.cs
- StringArrayConverter.cs
- CodeGroup.cs
- CalendarDataBindingHandler.cs
- CompiledELinqQueryState.cs
- MethodRental.cs
- Form.cs
- SafeSecurityHandles.cs
- TextTreeTextElementNode.cs
- XmlSerializerSection.cs
- Stylus.cs
- Input.cs
- DragDeltaEventArgs.cs
- TdsParserHelperClasses.cs
- ListViewItemEventArgs.cs
- DoubleAnimationClockResource.cs
- TextEditorTyping.cs
- DetailsViewUpdateEventArgs.cs
- ComboBoxRenderer.cs
- TextParagraph.cs
- BigInt.cs
- WebPartMenu.cs
- CommandBindingCollection.cs
- DictionaryContent.cs
- WebEventCodes.cs
- RowTypePropertyElement.cs
- TakeQueryOptionExpression.cs
- TdsRecordBufferSetter.cs
- Ray3DHitTestResult.cs
- GridViewDeletedEventArgs.cs
- Rules.cs
- SqlDataSourceCommandEventArgs.cs
- GPStream.cs
- NegotiationTokenProvider.cs
- DeclarationUpdate.cs
- HtmlControlPersistable.cs
- DetailsViewDeleteEventArgs.cs
- DesignTimeParseData.cs
- ContentPlaceHolder.cs
- CalculatedColumn.cs
- SafeRightsManagementSessionHandle.cs
- HandlerFactoryCache.cs
- MsmqBindingMonitor.cs
- ProgressBar.cs
- BrowsableAttribute.cs
- BoundPropertyEntry.cs
- PenLineJoinValidation.cs
- Command.cs
- EmptyControlCollection.cs
- TableHeaderCell.cs
- HyperLinkStyle.cs
- ManifestResourceInfo.cs
- KeyValueConfigurationCollection.cs
- AutomationPropertyInfo.cs
- AtomicFile.cs
- CodeGeneratorOptions.cs
- PriorityQueue.cs
- isolationinterop.cs
- MimeParameterWriter.cs
- DtrList.cs
- CaseStatement.cs
- XsltLoader.cs
- CellParagraph.cs
- GridItemPatternIdentifiers.cs
- Rect3D.cs
- GenericIdentity.cs
- SqlCacheDependencyDatabase.cs
- CompoundFileStreamReference.cs
- AssociationSet.cs
- DeflateEmulationStream.cs
- ActivityTypeResolver.xaml.cs
- XslCompiledTransform.cs
- SafeNativeMethods.cs
- DataServiceKeyAttribute.cs
- SQLMoney.cs
- XmlTypeAttribute.cs
- WsdlBuildProvider.cs
- SymmetricCryptoHandle.cs