Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / ndp / fx / src / DataWebControls / System / Data / WebControls / EntityDataSourceViewSchema.cs / 1 / 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
- FormattedTextSymbols.cs
- CodeArrayCreateExpression.cs
- ExitEventArgs.cs
- StringReader.cs
- XPathNodeInfoAtom.cs
- RegionIterator.cs
- Baml2006KnownTypes.cs
- SqlClientWrapperSmiStreamChars.cs
- WpfPayload.cs
- InvalidOleVariantTypeException.cs
- BinaryObjectReader.cs
- WebPartConnectionsCloseVerb.cs
- VirtualizingStackPanel.cs
- TextRangeEdit.cs
- ClrProviderManifest.cs
- TransportContext.cs
- NGCSerializationManager.cs
- ClientTargetCollection.cs
- AccessorTable.cs
- COAUTHINFO.cs
- KeyPressEvent.cs
- XsltLoader.cs
- TraceContextRecord.cs
- TrackingMemoryStreamFactory.cs
- ConnectionPoint.cs
- RotateTransform.cs
- GlobalEventManager.cs
- RangeValidator.cs
- XmlQueryCardinality.cs
- Exceptions.cs
- SystemBrushes.cs
- ReadOnlyDataSource.cs
- RenderingEventArgs.cs
- StringValidator.cs
- CoTaskMemHandle.cs
- ImageSource.cs
- PreloadedPackages.cs
- StrokeSerializer.cs
- ProfileModule.cs
- TableLayoutPanelResizeGlyph.cs
- ObservableCollectionDefaultValueFactory.cs
- SpotLight.cs
- XMLSchema.cs
- SoapElementAttribute.cs
- TextSelectionProcessor.cs
- SimpleBitVector32.cs
- BaseInfoTable.cs
- DebugController.cs
- XmlLanguage.cs
- KeyFrames.cs
- UnsafeNativeMethods.cs
- SizeChangedEventArgs.cs
- WithParamAction.cs
- DateTimeUtil.cs
- ByteBufferPool.cs
- AutomationEventArgs.cs
- Simplifier.cs
- embossbitmapeffect.cs
- HttpException.cs
- XmlAttributeOverrides.cs
- ImageIndexConverter.cs
- Point4D.cs
- RenamedEventArgs.cs
- PartialTrustVisibleAssembliesSection.cs
- SymLanguageType.cs
- ProgressBar.cs
- TextSelectionProcessor.cs
- BaseCollection.cs
- Thumb.cs
- AdapterSwitches.cs
- ConnectorRouter.cs
- CookielessHelper.cs
- ChannelTracker.cs
- FirstMatchCodeGroup.cs
- MultipleViewProviderWrapper.cs
- ZipIOExtraField.cs
- DuplexChannelBinder.cs
- PeerNearMe.cs
- XmlConvert.cs
- VSDExceptions.cs
- TrayIconDesigner.cs
- CookieProtection.cs
- MessageDecoder.cs
- FileInfo.cs
- WeakReferenceEnumerator.cs
- ValueType.cs
- SerializerDescriptor.cs
- messageonlyhwndwrapper.cs
- SimpleBitVector32.cs
- LOSFormatter.cs
- COM2PropertyDescriptor.cs
- SignatureHelper.cs
- BooleanFunctions.cs
- WeakReferenceEnumerator.cs
- FormatConvertedBitmap.cs
- DeclarativeCatalogPart.cs
- PageParserFilter.cs
- StreamUpdate.cs
- MouseButtonEventArgs.cs
- ParameterCollection.cs