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
- SimpleMailWebEventProvider.cs
- D3DImage.cs
- CodeMemberProperty.cs
- OdbcUtils.cs
- CharEnumerator.cs
- SafeCloseHandleCritical.cs
- AssemblyAttributes.cs
- SchemaObjectWriter.cs
- SchemaCompiler.cs
- DataGridViewRowPostPaintEventArgs.cs
- Configuration.cs
- SpeechEvent.cs
- SerializerWriterEventHandlers.cs
- DeviceSpecificChoice.cs
- DataSetUtil.cs
- MissingMethodException.cs
- MessageQueueCriteria.cs
- Pair.cs
- AttributeCollection.cs
- SelectionList.cs
- CodeMemberMethod.cs
- CopyEncoder.cs
- AnonymousIdentificationModule.cs
- ResourceFallbackManager.cs
- WmpBitmapEncoder.cs
- EtwTrace.cs
- InfoCardSymmetricAlgorithm.cs
- TraceLog.cs
- Section.cs
- StringFunctions.cs
- Light.cs
- PixelFormatConverter.cs
- CalendarAutoFormat.cs
- CopyCodeAction.cs
- XmlChoiceIdentifierAttribute.cs
- SqlDataAdapter.cs
- ILGenerator.cs
- SafeNativeMethods.cs
- SeverityFilter.cs
- FixedSOMContainer.cs
- WSDualHttpSecurity.cs
- HwndSourceKeyboardInputSite.cs
- FileNotFoundException.cs
- PeerCollaborationPermission.cs
- FunctionParameter.cs
- DesignerObjectListAdapter.cs
- EnumUnknown.cs
- EntityDataSourceStatementEditorForm.cs
- StreamGeometryContext.cs
- HtmlEncodedRawTextWriter.cs
- BinaryConverter.cs
- DesignerDataView.cs
- TrackingParticipant.cs
- AppDomainFactory.cs
- CancelEventArgs.cs
- XmlSerializerNamespaces.cs
- CommandHelpers.cs
- WebEventCodes.cs
- _LoggingObject.cs
- UnsafeNativeMethods.cs
- SamlEvidence.cs
- SQLInt16.cs
- ThreadStaticAttribute.cs
- XmlAttributes.cs
- Exceptions.cs
- ConfigurationPermission.cs
- _SslStream.cs
- Matrix3DConverter.cs
- Triangle.cs
- HttpResponseInternalWrapper.cs
- HelpInfo.cs
- LayoutEvent.cs
- WebPartDescription.cs
- ControlOperationInvoker.cs
- NCryptSafeHandles.cs
- DataGridViewRow.cs
- TranslateTransform3D.cs
- XPathNodeInfoAtom.cs
- SoapAttributes.cs
- StyleTypedPropertyAttribute.cs
- VisualTreeUtils.cs
- SymLanguageVendor.cs
- XmlValueConverter.cs
- RelationshipType.cs
- ScrollChrome.cs
- ComponentResourceManager.cs
- HotSpot.cs
- SiteMapNodeItem.cs
- EndEvent.cs
- Transform3DGroup.cs
- ServiceBuildProvider.cs
- XmlException.cs
- securestring.cs
- ExternalException.cs
- UserControlAutomationPeer.cs
- SecurityContext.cs
- Select.cs
- DashStyles.cs
- RemotingService.cs
- ScrollChrome.cs