Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataWebControls / System / Data / WebControls / EntityDataSourceViewSchema.cs / 2 / 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); } internal EntityDataSourceViewSchema(IEnumerable results) { Type type = GetListItemType(results.GetType()); PropertyInfo[] infos = type.GetProperties(BindingFlags.Public | BindingFlags.Instance); PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(type); CreateColumnsFromPropDescs(properties); } private void CreateColumnsFromPropDescs(PropertyDescriptorCollection properties) { 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); this.Columns.Add(column); } } } 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); } internal EntityDataSourceViewSchema(IEnumerable results) { Type type = GetListItemType(results.GetType()); PropertyInfo[] infos = type.GetProperties(BindingFlags.Public | BindingFlags.Instance); PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(type); CreateColumnsFromPropDescs(properties); } private void CreateColumnsFromPropDescs(PropertyDescriptorCollection properties) { 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); this.Columns.Add(column); } } } 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
- DateTimeConverter.cs
- StaticSiteMapProvider.cs
- SchemaImporterExtensionElement.cs
- Action.cs
- AutomationIdentifierGuids.cs
- ReachPageContentCollectionSerializerAsync.cs
- XPathNode.cs
- PatternMatcher.cs
- EncodingInfo.cs
- XmlSignatureManifest.cs
- HttpWebRequestElement.cs
- ScrollViewer.cs
- XmlAnyElementAttribute.cs
- GridSplitter.cs
- ForeignKeyConstraint.cs
- XmlException.cs
- BmpBitmapDecoder.cs
- TypeToStringValueConverter.cs
- IpcClientChannel.cs
- NameSpaceExtractor.cs
- UserControlFileEditor.cs
- LabelTarget.cs
- TableAutomationPeer.cs
- MeasurementDCInfo.cs
- SimpleWorkerRequest.cs
- AutomationPropertyInfo.cs
- TextEditorCopyPaste.cs
- FormsAuthenticationCredentials.cs
- SHA256CryptoServiceProvider.cs
- VerticalAlignConverter.cs
- CodeExpressionStatement.cs
- RoutedEventArgs.cs
- NegotiateStream.cs
- Brush.cs
- WebPartAddingEventArgs.cs
- HttpContextServiceHost.cs
- CancelEventArgs.cs
- ListBox.cs
- HMACSHA1.cs
- GroupItemAutomationPeer.cs
- SQLInt32Storage.cs
- BuiltInExpr.cs
- ServiceReference.cs
- FreezableDefaultValueFactory.cs
- WebPartZone.cs
- BaseProcessor.cs
- Timer.cs
- WebPartConnectionsDisconnectVerb.cs
- DataPagerFieldCollection.cs
- DeviceContext.cs
- WindowsScroll.cs
- UserUseLicenseDictionaryLoader.cs
- Native.cs
- Opcode.cs
- SplineQuaternionKeyFrame.cs
- PropertyToken.cs
- WindowsGraphicsCacheManager.cs
- AssemblyAttributesGoHere.cs
- WebPartAddingEventArgs.cs
- SocketPermission.cs
- CodeCatchClause.cs
- DbException.cs
- relpropertyhelper.cs
- SafeHandle.cs
- CollaborationHelperFunctions.cs
- MachineKeyConverter.cs
- OleDbConnectionFactory.cs
- AudioFormatConverter.cs
- StateFinalizationDesigner.cs
- CommentAction.cs
- UrlMapping.cs
- SQLRoleProvider.cs
- PropertyGridEditorPart.cs
- ObjectCloneHelper.cs
- BitmapEffectInputData.cs
- DataGridItem.cs
- ApplicationHost.cs
- ApplicationServiceManager.cs
- Type.cs
- SocketInformation.cs
- StyleSelector.cs
- DropSource.cs
- RepeaterItemCollection.cs
- SessionEndingCancelEventArgs.cs
- MarkupObject.cs
- ObjectIDGenerator.cs
- TemplateBaseAction.cs
- WebReference.cs
- CategoryNameCollection.cs
- DocumentGridContextMenu.cs
- SqlDataSourceSelectingEventArgs.cs
- PrePostDescendentsWalker.cs
- CorrelationResolver.cs
- FontStretches.cs
- MatrixTransform3D.cs
- ExpressionCopier.cs
- ValidatorCollection.cs
- LightweightEntityWrapper.cs
- SecurityTokenException.cs
- DispatcherObject.cs