Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Framework / System / Windows / Data / PropertyGroupDescription.cs / 1 / PropertyGroupDescription.cs
//---------------------------------------------------------------------------- // //// Copyright (C) 2003 by Microsoft Corporation. All rights reserved. // // // // Description: Description of grouping based on a property value. // // See spec at http://avalon/connecteddata/Specs/Grouping.mht // //--------------------------------------------------------------------------- using System; // StringComparison using System.ComponentModel; // [DefaultValue] using System.Globalization; // CultureInfo using System.Reflection; // PropertyInfo using System.Windows; // SR using System.Xml; // XmlNode using MS.Internal; // XmlHelper namespace System.Windows.Data { ////// Description of grouping based on a property value. /// public class PropertyGroupDescription : GroupDescription { #region Constructors //----------------------------------------------------- // // Constructors // //----------------------------------------------------- ////// Initializes a new instance of PropertyGroupDescription. /// public PropertyGroupDescription() { } ////// Initializes a new instance of PropertyGroupDescription. /// /// /// The name of the property whose value is used to determine which group(s) /// an item belongs to. /// If PropertyName is null, the item itself is used. /// public PropertyGroupDescription(string propertyName) { UpdatePropertyName(propertyName); } ////// Initializes a new instance of PropertyGroupDescription. /// /// /// The name of the property whose value is used to determine which group(s) /// an item belongs to. /// If PropertyName is null, the item itself is used. /// /// /// This converter is applied to the property value (or the item) to /// produce the final value used to determine which group(s) an item /// belongs to. /// If the delegate returns an ICollection, the item is added to /// multiple groups - one for each member of the collection. /// public PropertyGroupDescription(string propertyName, IValueConverter converter) { UpdatePropertyName(propertyName); _converter = converter; } ////// Initializes a new instance of PropertyGroupDescription. /// /// /// The name of the property whose value is used to determine which group(s) /// an item belongs to. /// If PropertyName is null, the item itself is used. /// /// /// This converter is applied to the property value (or the item) to /// produce the final value used to determine which group(s) an item /// belongs to. /// If the delegate returns an ICollection, the item is added to /// multiple groups - one for each member of the collection. /// /// /// This governs the comparison between an item's value (as determined /// by PropertyName and Converter) and a group's name. /// It is ignored unless both comparands are strings. /// The default value is StringComparison.Ordinal. /// public PropertyGroupDescription(string propertyName, IValueConverter converter, StringComparison stringComparison) { UpdatePropertyName(propertyName); _converter = converter; _stringComparison = stringComparison; } #endregion Constructors #region Public Properties //------------------------------------------------------ // // Public Properties // //----------------------------------------------------- ////// The name of the property whose value is used to determine which group(s) /// an item belongs to. /// If PropertyName is null, the item itself is used. /// [DefaultValue(null)] public string PropertyName { get { return _propertyName; } set { UpdatePropertyName(value); OnPropertyChanged("PropertyName"); } } ////// This converter is applied to the property value (or the item) to /// produce the final value used to determine which group(s) an item /// belongs to. /// If the delegate returns an ICollection, the item is added to /// multiple groups - one for each member of the collection. /// [DefaultValue(null)] public IValueConverter Converter { get { return _converter; } set { _converter = value; OnPropertyChanged("Converter"); } } ////// This governs the comparison between an item's value (as determined /// by PropertyName and Converter) and a group's name. /// It is ignored unless both comparands are strings. /// The default value is StringComparison.Ordinal. /// [DefaultValue(StringComparison.Ordinal)] public StringComparison StringComparison { get { return _stringComparison; } set { _stringComparison = value; OnPropertyChanged("StringComparison"); } } #endregion Public Properties #region Public Methods //------------------------------------------------------ // // Public Methods // //------------------------------------------------------ ////// Return the group name(s) for the given item /// public override object GroupNameFromItem(object item, int level, CultureInfo culture) { object value; // get the property value if (String.IsNullOrEmpty(PropertyName)) { value = item; } else if (XmlHelper.IsXmlNode(item)) { value = GetValueFromXmlNode(item); } else if (item != null) { using (_propertyPath.SetContext(item)) { value = _propertyPath.GetValue(); } } else { value = null; } // apply the converter to the value if (Converter != null) { value = Converter.Convert(value, typeof(object), level, culture); } return value; } ////// Return true if the names match (i.e the item should belong to the group). /// public override bool NamesMatch(object groupName, object itemName) { string s1 = groupName as string; string s2 = itemName as string; if (s1 != null && s2 != null) { return String.Equals(s1, s2, StringComparison); } else { return Object.Equals(groupName, itemName); } } #endregion Public Methods #region Private Methods private void UpdatePropertyName(string propertyName) { _propertyName = propertyName; _propertyPath = !String.IsNullOrEmpty(propertyName) ? new PropertyPath(propertyName) : null; } private void OnPropertyChanged(string propertyName) { OnPropertyChanged(new PropertyChangedEventArgs(propertyName)); } #endregion Private Methods // separate method to avoid loading System.Xml [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)] private object GetValueFromXmlNode(object item) { return XmlHelper.SelectStringValue((XmlNode)item, PropertyName); } #region Private Fields //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ string _propertyName; PropertyPath _propertyPath; IValueConverter _converter; StringComparison _stringComparison = StringComparison.Ordinal; #endregion Private Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // //// Copyright (C) 2003 by Microsoft Corporation. All rights reserved. // // // // Description: Description of grouping based on a property value. // // See spec at http://avalon/connecteddata/Specs/Grouping.mht // //--------------------------------------------------------------------------- using System; // StringComparison using System.ComponentModel; // [DefaultValue] using System.Globalization; // CultureInfo using System.Reflection; // PropertyInfo using System.Windows; // SR using System.Xml; // XmlNode using MS.Internal; // XmlHelper namespace System.Windows.Data { ////// Description of grouping based on a property value. /// public class PropertyGroupDescription : GroupDescription { #region Constructors //----------------------------------------------------- // // Constructors // //----------------------------------------------------- ////// Initializes a new instance of PropertyGroupDescription. /// public PropertyGroupDescription() { } ////// Initializes a new instance of PropertyGroupDescription. /// /// /// The name of the property whose value is used to determine which group(s) /// an item belongs to. /// If PropertyName is null, the item itself is used. /// public PropertyGroupDescription(string propertyName) { UpdatePropertyName(propertyName); } ////// Initializes a new instance of PropertyGroupDescription. /// /// /// The name of the property whose value is used to determine which group(s) /// an item belongs to. /// If PropertyName is null, the item itself is used. /// /// /// This converter is applied to the property value (or the item) to /// produce the final value used to determine which group(s) an item /// belongs to. /// If the delegate returns an ICollection, the item is added to /// multiple groups - one for each member of the collection. /// public PropertyGroupDescription(string propertyName, IValueConverter converter) { UpdatePropertyName(propertyName); _converter = converter; } ////// Initializes a new instance of PropertyGroupDescription. /// /// /// The name of the property whose value is used to determine which group(s) /// an item belongs to. /// If PropertyName is null, the item itself is used. /// /// /// This converter is applied to the property value (or the item) to /// produce the final value used to determine which group(s) an item /// belongs to. /// If the delegate returns an ICollection, the item is added to /// multiple groups - one for each member of the collection. /// /// /// This governs the comparison between an item's value (as determined /// by PropertyName and Converter) and a group's name. /// It is ignored unless both comparands are strings. /// The default value is StringComparison.Ordinal. /// public PropertyGroupDescription(string propertyName, IValueConverter converter, StringComparison stringComparison) { UpdatePropertyName(propertyName); _converter = converter; _stringComparison = stringComparison; } #endregion Constructors #region Public Properties //------------------------------------------------------ // // Public Properties // //----------------------------------------------------- ////// The name of the property whose value is used to determine which group(s) /// an item belongs to. /// If PropertyName is null, the item itself is used. /// [DefaultValue(null)] public string PropertyName { get { return _propertyName; } set { UpdatePropertyName(value); OnPropertyChanged("PropertyName"); } } ////// This converter is applied to the property value (or the item) to /// produce the final value used to determine which group(s) an item /// belongs to. /// If the delegate returns an ICollection, the item is added to /// multiple groups - one for each member of the collection. /// [DefaultValue(null)] public IValueConverter Converter { get { return _converter; } set { _converter = value; OnPropertyChanged("Converter"); } } ////// This governs the comparison between an item's value (as determined /// by PropertyName and Converter) and a group's name. /// It is ignored unless both comparands are strings. /// The default value is StringComparison.Ordinal. /// [DefaultValue(StringComparison.Ordinal)] public StringComparison StringComparison { get { return _stringComparison; } set { _stringComparison = value; OnPropertyChanged("StringComparison"); } } #endregion Public Properties #region Public Methods //------------------------------------------------------ // // Public Methods // //------------------------------------------------------ ////// Return the group name(s) for the given item /// public override object GroupNameFromItem(object item, int level, CultureInfo culture) { object value; // get the property value if (String.IsNullOrEmpty(PropertyName)) { value = item; } else if (XmlHelper.IsXmlNode(item)) { value = GetValueFromXmlNode(item); } else if (item != null) { using (_propertyPath.SetContext(item)) { value = _propertyPath.GetValue(); } } else { value = null; } // apply the converter to the value if (Converter != null) { value = Converter.Convert(value, typeof(object), level, culture); } return value; } ////// Return true if the names match (i.e the item should belong to the group). /// public override bool NamesMatch(object groupName, object itemName) { string s1 = groupName as string; string s2 = itemName as string; if (s1 != null && s2 != null) { return String.Equals(s1, s2, StringComparison); } else { return Object.Equals(groupName, itemName); } } #endregion Public Methods #region Private Methods private void UpdatePropertyName(string propertyName) { _propertyName = propertyName; _propertyPath = !String.IsNullOrEmpty(propertyName) ? new PropertyPath(propertyName) : null; } private void OnPropertyChanged(string propertyName) { OnPropertyChanged(new PropertyChangedEventArgs(propertyName)); } #endregion Private Methods // separate method to avoid loading System.Xml [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)] private object GetValueFromXmlNode(object item) { return XmlHelper.SelectStringValue((XmlNode)item, PropertyName); } #region Private Fields //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ string _propertyName; PropertyPath _propertyPath; IValueConverter _converter; StringComparison _stringComparison = StringComparison.Ordinal; #endregion Private Fields } } // 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
- LexicalChunk.cs
- JapaneseLunisolarCalendar.cs
- SafeCertificateContext.cs
- InvokeProviderWrapper.cs
- DoubleAverageAggregationOperator.cs
- DocumentSequenceHighlightLayer.cs
- Msec.cs
- EntityViewGenerationAttribute.cs
- TemplateControlParser.cs
- PictureBoxDesigner.cs
- SafeFindHandle.cs
- TextTreeText.cs
- FixedNode.cs
- BookmarkEventArgs.cs
- XPathExpr.cs
- CurrentChangedEventManager.cs
- BamlCollectionHolder.cs
- DefaultTraceListener.cs
- CombinedGeometry.cs
- CharacterHit.cs
- FileDialog_Vista.cs
- ListViewItemCollectionEditor.cs
- FormViewInsertedEventArgs.cs
- BooleanAnimationBase.cs
- ETagAttribute.cs
- RequestQueue.cs
- ReachPageContentCollectionSerializerAsync.cs
- MailMessageEventArgs.cs
- MembershipSection.cs
- ApplicationDirectoryMembershipCondition.cs
- DataGridViewColumn.cs
- pingexception.cs
- ExportOptions.cs
- ContextInformation.cs
- DockAndAnchorLayout.cs
- XhtmlBasicPhoneCallAdapter.cs
- hwndwrapper.cs
- SqlGenericUtil.cs
- ToolStripRenderer.cs
- HtmlControl.cs
- ExtensionWindowHeader.cs
- InProcStateClientManager.cs
- WindowsTab.cs
- XmlnsCache.cs
- MethodCallTranslator.cs
- RadioButtonList.cs
- CurrencyWrapper.cs
- ObjectStateManagerMetadata.cs
- ReadOnlyDictionary.cs
- GridView.cs
- Condition.cs
- PeerCollaboration.cs
- MemberHolder.cs
- DockPatternIdentifiers.cs
- ErrorWebPart.cs
- AxisAngleRotation3D.cs
- AsyncWaitHandle.cs
- SortableBindingList.cs
- RootBrowserWindow.cs
- DataGridViewCellValidatingEventArgs.cs
- SystemIPv6InterfaceProperties.cs
- InlineObject.cs
- TextServicesHost.cs
- ZipIOCentralDirectoryFileHeader.cs
- Ray3DHitTestResult.cs
- EventLogException.cs
- LocalizableResourceBuilder.cs
- SqlDataSourceAdvancedOptionsForm.cs
- ObjectAnimationBase.cs
- InOutArgumentConverter.cs
- Effect.cs
- CursorConverter.cs
- XmlTextReader.cs
- SRef.cs
- WebPartManagerInternals.cs
- XmlResolver.cs
- ImpersonateTokenRef.cs
- EntityDataSourceMemberPath.cs
- ContentPropertyAttribute.cs
- TransformConverter.cs
- ZeroOpNode.cs
- CompletedAsyncResult.cs
- SafeCryptoHandles.cs
- DbConnectionFactory.cs
- SectionInput.cs
- LocalIdKeyIdentifierClause.cs
- BindingUtils.cs
- CheckBoxList.cs
- QueryLifecycle.cs
- ConfigXmlDocument.cs
- SqlAggregateChecker.cs
- DataBindingCollectionConverter.cs
- CursorConverter.cs
- AnnotationHelper.cs
- WmpBitmapDecoder.cs
- URL.cs
- XmlSchemaComplexType.cs
- AnimatedTypeHelpers.cs
- Rotation3DAnimationBase.cs
- SelectionHighlightInfo.cs