Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataWebControls / System / Data / WebControls / EntityDataSourceViewSchema.cs / 1458001 / EntityDataSourceViewSchema.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Data.Entity; using System.Data.Metadata.Edm; using System.Diagnostics; using System.Linq; using System.Text; using System.Reflection; namespace System.Web.UI.WebControls { internal class EntityDataSourceViewSchema : DataTable { internal EntityDataSourceViewSchema(EntityDataSourceWrapperCollection wrappers) { DataColumn column; Listkeys = new List (); PropertyDescriptorCollection properties = wrappers.GetItemProperties(null); MetadataWorkspace workspace = wrappers.Context.MetadataWorkspace; foreach (EntityDataSourceWrapperPropertyDescriptor property in properties) { Type propertyType = property.PropertyType; column = ConstructColumn(property); column.AllowDBNull = property.Column.IsNullable; EntityDataSourcePropertyColumn propertyColumn = property.Column as EntityDataSourcePropertyColumn; if (null!= propertyColumn && propertyColumn.IsKey) { keys.Add(column); } Columns.Add(column); } this.PrimaryKey = keys.ToArray(); } internal EntityDataSourceViewSchema(ITypedList typedList) { PropertyDescriptorCollection properties = typedList.GetItemProperties(null); CreateColumnsFromPropDescs(properties, null); } internal EntityDataSourceViewSchema(IEnumerable results) : this(results, null) { } /// /// Creates a view schema with a set of typed results and an optional set of keyName properties on those results /// internal EntityDataSourceViewSchema(IEnumerable results, string[] keyNames) { Type type = GetListItemType(results.GetType()); PropertyInfo[] infos = type.GetProperties(BindingFlags.Public | BindingFlags.Instance); PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(type); CreateColumnsFromPropDescs(properties, keyNames); } ////// Creates a set of DataTable columns from a collection of property descriptors and an optional /// set of key names from metadata /// private void CreateColumnsFromPropDescs(PropertyDescriptorCollection properties, string[] keyNames) { Listkeys = new List (); foreach (PropertyDescriptor property in properties) { System.ComponentModel.BrowsableAttribute attr = (System.ComponentModel.BrowsableAttribute)property.Attributes[typeof(System.ComponentModel.BrowsableAttribute)]; if (attr.Browsable) { DataColumn column = ConstructColumn(property); // If there are keyNames, check if this column is one of the keys if (keyNames != null && keyNames.Contains(column.ColumnName)) { keys.Add(column); } this.Columns.Add(column); } } if (keys.Count > 0) { this.PrimaryKey = keys.ToArray(); } } private static DataColumn ConstructColumn(PropertyDescriptor property) { DataColumn column = new DataColumn(); column.ColumnName = property.Name; Type propertyType = property.PropertyType; if (propertyType.IsGenericType && propertyType.GetGenericTypeDefinition() == typeof(Nullable<>)) { Type[] typeArguments = propertyType.GetGenericArguments(); Debug.Assert(typeArguments.Length == 1, "should only have one type argument from Nullable<> condition."); column.DataType = typeArguments[0]; column.AllowDBNull = true; } else { column.DataType = propertyType; column.AllowDBNull = !propertyType.IsValueType; } column.ReadOnly = property.IsReadOnly; column.Unique = false; column.AutoIncrement = false; column.MaxLength = -1; return column; } // see System.Data.Objects.DataRecordObjectView.cs private static PropertyInfo GetTypedIndexer(Type type) { PropertyInfo indexer = null; if (typeof(IList).IsAssignableFrom(type) || typeof(ITypedList).IsAssignableFrom(type) || typeof(IListSource).IsAssignableFrom(type)) { System.Reflection.PropertyInfo[] props = type.GetProperties(BindingFlags.Public | BindingFlags.Instance); for (int idx = 0; idx < props.Length; idx++) { if (props[idx].GetIndexParameters().Length > 0 && props[idx].PropertyType != typeof(object)) { indexer = props[idx]; //Prefer the standard indexer, if there is one if (indexer.Name == "Item") { break; } } } } return indexer; } // see System.Data.Objects.DataRecordObjectView.cs private static Type GetListItemType(Type type) { Type itemType; if (typeof(Array).IsAssignableFrom(type)) { itemType = type.GetElementType(); } else { PropertyInfo typedIndexer = GetTypedIndexer(type); if (typedIndexer != null) { itemType = typedIndexer.PropertyType; } else { itemType = type; } } return itemType; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Data.Entity; using System.Data.Metadata.Edm; using System.Diagnostics; using System.Linq; using System.Text; using System.Reflection; namespace System.Web.UI.WebControls { internal class EntityDataSourceViewSchema : DataTable { internal EntityDataSourceViewSchema(EntityDataSourceWrapperCollection wrappers) { DataColumn column; Listkeys = new List (); PropertyDescriptorCollection properties = wrappers.GetItemProperties(null); MetadataWorkspace workspace = wrappers.Context.MetadataWorkspace; foreach (EntityDataSourceWrapperPropertyDescriptor property in properties) { Type propertyType = property.PropertyType; column = ConstructColumn(property); column.AllowDBNull = property.Column.IsNullable; EntityDataSourcePropertyColumn propertyColumn = property.Column as EntityDataSourcePropertyColumn; if (null!= propertyColumn && propertyColumn.IsKey) { keys.Add(column); } Columns.Add(column); } this.PrimaryKey = keys.ToArray(); } internal EntityDataSourceViewSchema(ITypedList typedList) { PropertyDescriptorCollection properties = typedList.GetItemProperties(null); CreateColumnsFromPropDescs(properties, null); } internal EntityDataSourceViewSchema(IEnumerable results) : this(results, null) { } /// /// Creates a view schema with a set of typed results and an optional set of keyName properties on those results /// internal EntityDataSourceViewSchema(IEnumerable results, string[] keyNames) { Type type = GetListItemType(results.GetType()); PropertyInfo[] infos = type.GetProperties(BindingFlags.Public | BindingFlags.Instance); PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(type); CreateColumnsFromPropDescs(properties, keyNames); } ////// Creates a set of DataTable columns from a collection of property descriptors and an optional /// set of key names from metadata /// private void CreateColumnsFromPropDescs(PropertyDescriptorCollection properties, string[] keyNames) { Listkeys = new List (); foreach (PropertyDescriptor property in properties) { System.ComponentModel.BrowsableAttribute attr = (System.ComponentModel.BrowsableAttribute)property.Attributes[typeof(System.ComponentModel.BrowsableAttribute)]; if (attr.Browsable) { DataColumn column = ConstructColumn(property); // If there are keyNames, check if this column is one of the keys if (keyNames != null && keyNames.Contains(column.ColumnName)) { keys.Add(column); } this.Columns.Add(column); } } if (keys.Count > 0) { this.PrimaryKey = keys.ToArray(); } } private static DataColumn ConstructColumn(PropertyDescriptor property) { DataColumn column = new DataColumn(); column.ColumnName = property.Name; Type propertyType = property.PropertyType; if (propertyType.IsGenericType && propertyType.GetGenericTypeDefinition() == typeof(Nullable<>)) { Type[] typeArguments = propertyType.GetGenericArguments(); Debug.Assert(typeArguments.Length == 1, "should only have one type argument from Nullable<> condition."); column.DataType = typeArguments[0]; column.AllowDBNull = true; } else { column.DataType = propertyType; column.AllowDBNull = !propertyType.IsValueType; } column.ReadOnly = property.IsReadOnly; column.Unique = false; column.AutoIncrement = false; column.MaxLength = -1; return column; } // see System.Data.Objects.DataRecordObjectView.cs private static PropertyInfo GetTypedIndexer(Type type) { PropertyInfo indexer = null; if (typeof(IList).IsAssignableFrom(type) || typeof(ITypedList).IsAssignableFrom(type) || typeof(IListSource).IsAssignableFrom(type)) { System.Reflection.PropertyInfo[] props = type.GetProperties(BindingFlags.Public | BindingFlags.Instance); for (int idx = 0; idx < props.Length; idx++) { if (props[idx].GetIndexParameters().Length > 0 && props[idx].PropertyType != typeof(object)) { indexer = props[idx]; //Prefer the standard indexer, if there is one if (indexer.Name == "Item") { break; } } } } return indexer; } // see System.Data.Objects.DataRecordObjectView.cs private static Type GetListItemType(Type type) { Type itemType; if (typeof(Array).IsAssignableFrom(type)) { itemType = type.GetElementType(); } else { PropertyInfo typedIndexer = GetTypedIndexer(type); if (typedIndexer != null) { itemType = typedIndexer.PropertyType; } else { itemType = type; } } return itemType; } } } // 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
- StreamHelper.cs
- DummyDataSource.cs
- ScriptRegistrationManager.cs
- XPathNodeIterator.cs
- PropertyInfoSet.cs
- Point.cs
- KeyGestureConverter.cs
- SqlMetaData.cs
- CustomValidator.cs
- XmlLanguage.cs
- ACE.cs
- AsyncResult.cs
- ListViewDataItem.cs
- TypePresenter.xaml.cs
- RectValueSerializer.cs
- MsmqIntegrationInputChannel.cs
- DataListItemCollection.cs
- DocumentViewer.cs
- TransactionChannelFaultConverter.cs
- WebConfigurationFileMap.cs
- SplitterCancelEvent.cs
- MappingException.cs
- ExtentKey.cs
- ContainerParagraph.cs
- NavigationWindow.cs
- LassoHelper.cs
- TypeElementCollection.cs
- ConditionalDesigner.cs
- ParserContext.cs
- EdmItemError.cs
- MonthChangedEventArgs.cs
- AspCompat.cs
- SqlTopReducer.cs
- ByteStorage.cs
- CategoryNameCollection.cs
- LocationSectionRecord.cs
- AutomationPatternInfo.cs
- MiniParameterInfo.cs
- Rect3D.cs
- SqlRowUpdatedEvent.cs
- EntityDataSourceView.cs
- DataKeyCollection.cs
- TraceSection.cs
- LambdaExpression.cs
- Translator.cs
- PreservationFileWriter.cs
- RTLAwareMessageBox.cs
- StrokeNodeEnumerator.cs
- PropertyDescriptorGridEntry.cs
- PathFigure.cs
- PointCollection.cs
- Compiler.cs
- LoadedOrUnloadedOperation.cs
- RelAssertionDirectKeyIdentifierClause.cs
- DocumentAutomationPeer.cs
- DBPropSet.cs
- WorkflowClientDeliverMessageWrapper.cs
- NavigationPropertyEmitter.cs
- Config.cs
- RunClient.cs
- WebServiceFaultDesigner.cs
- CryptoApi.cs
- Themes.cs
- IntPtr.cs
- ParameterReplacerVisitor.cs
- DataGridViewCellValueEventArgs.cs
- SharedPersonalizationStateInfo.cs
- DataGridBoundColumn.cs
- DispatcherHooks.cs
- FontFamily.cs
- XamlPointCollectionSerializer.cs
- KeyInfo.cs
- EdmError.cs
- DataGridViewAccessibleObject.cs
- FileChangesMonitor.cs
- XmlSerializer.cs
- ParameterBuilder.cs
- SystemColors.cs
- BitmapInitialize.cs
- BinaryObjectInfo.cs
- TrackingDataItem.cs
- CodeTypeMemberCollection.cs
- DataServiceRequestOfT.cs
- DataBindingExpressionBuilder.cs
- ObfuscateAssemblyAttribute.cs
- EntityTypeEmitter.cs
- XmlTextWriter.cs
- HttpModuleActionCollection.cs
- EntityDataSourceChangingEventArgs.cs
- UpdateManifestForBrowserApplication.cs
- CommandConverter.cs
- Win32.cs
- CalculatedColumn.cs
- ScrollBarAutomationPeer.cs
- BitmapCodecInfo.cs
- ResetableIterator.cs
- _LocalDataStoreMgr.cs
- AutomationProperties.cs
- BindingSource.cs
- regiisutil.cs