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
- CustomAttributeBuilder.cs
- OSEnvironmentHelper.cs
- DefaultObjectSerializer.cs
- keycontainerpermission.cs
- DynamicFilter.cs
- WebPartHeaderCloseVerb.cs
- HttpProfileGroupBase.cs
- TypeUsage.cs
- dataSvcMapFileLoader.cs
- TableCell.cs
- TextContainerChangedEventArgs.cs
- Debugger.cs
- Transform.cs
- StringFunctions.cs
- ZoomPercentageConverter.cs
- SemanticBasicElement.cs
- WorkflowDebuggerSteppingAttribute.cs
- DataGridViewCellStyleBuilderDialog.cs
- TraceData.cs
- CFStream.cs
- MimeTypePropertyAttribute.cs
- ActivityDelegate.cs
- TreeNodeCollection.cs
- keycontainerpermission.cs
- Rotation3D.cs
- Size3D.cs
- DynamicEntity.cs
- SmiTypedGetterSetter.cs
- ArgumentNullException.cs
- EntityPropertyMappingAttribute.cs
- EventMap.cs
- SeekStoryboard.cs
- Math.cs
- PathData.cs
- selecteditemcollection.cs
- SharedTcpTransportManager.cs
- XPathDocumentNavigator.cs
- LoginUtil.cs
- Region.cs
- BrowserDefinitionCollection.cs
- _ConnectionGroup.cs
- WebPartZone.cs
- RTTrackingProfile.cs
- DirectoryNotFoundException.cs
- WebServiceData.cs
- ObjectViewFactory.cs
- BatchParser.cs
- ExpressionVisitor.cs
- DataContractJsonSerializer.cs
- AlphabeticalEnumConverter.cs
- BamlRecords.cs
- XmlText.cs
- Margins.cs
- OletxVolatileEnlistment.cs
- ShaperBuffers.cs
- ResourceDisplayNameAttribute.cs
- MailBnfHelper.cs
- SqlRowUpdatedEvent.cs
- GraphicsContainer.cs
- RelatedPropertyManager.cs
- DataGridToolTip.cs
- EditorReuseAttribute.cs
- BitmapEncoder.cs
- XPathItem.cs
- BasePattern.cs
- RequestStatusBarUpdateEventArgs.cs
- ManagedFilter.cs
- MemoryMappedView.cs
- IssuanceLicense.cs
- RenderCapability.cs
- DesignerLoader.cs
- MessageRpc.cs
- SQLGuid.cs
- WindowsListBox.cs
- IntellisenseTextBox.cs
- ColumnHeader.cs
- LayoutUtils.cs
- BindingOperations.cs
- ActivityTypeCodeDomSerializer.cs
- ListView.cs
- EntityParameter.cs
- Triangle.cs
- Size3DValueSerializer.cs
- HandleCollector.cs
- ImageBrush.cs
- BitmapEffectGeneralTransform.cs
- ConfigXmlCDataSection.cs
- ItemChangedEventArgs.cs
- ObjectTokenCategory.cs
- FunctionDetailsReader.cs
- SoapMessage.cs
- HtmlContainerControl.cs
- XmlSchemaInclude.cs
- ALinqExpressionVisitor.cs
- RenderingBiasValidation.cs
- StackSpiller.Generated.cs
- DataGridViewSelectedCellsAccessibleObject.cs
- TextElement.cs
- NoClickablePointException.cs
- ConstraintConverter.cs