Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / ndp / fx / src / DLinq / Dlinq / DbConvert.cs / 1 / DbConvert.cs
using System.Data.Common; using System.Data.SqlClient; using System.Linq.Expressions; using System.IO; using System.Reflection; using System.Text; using System.Runtime.Serialization.Formatters.Binary; using System.Linq; using System.Collections.Generic; using System.Collections; using System.Diagnostics.CodeAnalysis; namespace System.Data.Linq { public static class DBConvert { private static Type[] StringArg = new Type[] { typeof(string) }; [SuppressMessage("Microsoft.Design", "CA1004:GenericMethodsShouldProvideTypeParameter", Justification = "[....]: Generic parameters are required for strong-typing of the return type.")] public static T ChangeType(object value) { return (T)ChangeType(value, typeof(T)); } [SuppressMessage("Microsoft.Performance", "CA1800:DoNotCastUnnecessarily", Justification = "[....]: Cast is dependent on node type and casts do not happen unecessarily in a single code path.")] [SuppressMessage("Microsoft.Maintainability", "CA1502:AvoidExcessiveComplexity", Justification = "These issues are related to our use of if-then and case statements for node types, which adds to the complexity count however when reviewed they are easy to navigate and understand.")] public static object ChangeType(object value, Type type) { if (value == null) return null; MethodInfo mi; type = System.Data.Linq.SqlClient.TypeSystem.GetNonNullableType(type); Type oType = value.GetType(); if (type.IsAssignableFrom(value.GetType())) return value; if (type == typeof(Binary)) { if (oType == typeof(byte[])) { return new Binary((byte[])value); } else if (oType == typeof(Guid)) { return new Binary(((Guid)value).ToByteArray()); } else { BinaryFormatter formatter = new BinaryFormatter(); byte[] streamArray; using (MemoryStream stream = new MemoryStream()) { formatter.Serialize(stream, value); streamArray = stream.ToArray(); } return new Binary(streamArray); } } else if (type == typeof(byte[])) { if (oType == typeof(Binary)) { return ((Binary)value).ToArray(); } else if (oType == typeof(Guid)) { return ((Guid)value).ToByteArray(); } else { BinaryFormatter formatter = new BinaryFormatter(); byte[] returnValue; using (MemoryStream stream = new MemoryStream()) { formatter.Serialize(stream, value); returnValue = stream.ToArray(); } return returnValue; } } else if (oType == typeof(byte[])) { if (type == typeof(Guid)) { return new Guid((byte[])value); } else { BinaryFormatter formatter = new BinaryFormatter(); object returnValue; using (MemoryStream stream = new MemoryStream((byte[])value)) { returnValue = ChangeType(formatter.Deserialize(stream), type); } return returnValue; } } else if (oType == typeof(Binary)) { if (type == typeof(Guid)) { return new Guid(((Binary)value).ToArray()); } else { BinaryFormatter formatter = new BinaryFormatter(); using (MemoryStream stream = new MemoryStream(((Binary)value).ToArray(), false)) { return ChangeType(formatter.Deserialize(stream), type); } } } else if (type.IsEnum) { if (oType == typeof(string)) { string text = ((string)value).Trim(); return Enum.Parse(type, text); } else { return Enum.ToObject(type, Convert.ChangeType(value, Enum.GetUnderlyingType(type), Globalization.CultureInfo.InvariantCulture)); } } else if (oType.IsEnum) { if (type == typeof(string)) { return Enum.GetName(oType, value); } else { return Convert.ChangeType(Convert.ChangeType(value, Enum.GetUnderlyingType(oType), Globalization.CultureInfo.InvariantCulture), type, Globalization.CultureInfo.InvariantCulture); } } else if (type == typeof(TimeSpan)) { if (oType == typeof(string)) { return TimeSpan.Parse((string)value); } else if (oType == typeof(DateTime)) { return DateTime.Parse(value.ToString(), Globalization.CultureInfo.InvariantCulture).TimeOfDay; } else if (oType == typeof(DateTimeOffset)) { return DateTimeOffset.Parse(value.ToString(), Globalization.CultureInfo.InvariantCulture).TimeOfDay; } else { return new TimeSpan((long)Convert.ChangeType(value, typeof(long), Globalization.CultureInfo.InvariantCulture)); } } else if (oType == typeof(TimeSpan)) { if (type == typeof(string)) { return value.ToString(); } else if (type == typeof(DateTime)) { DateTime dt = new DateTime(); return dt.Add((TimeSpan)value); } else if (type == typeof(DateTimeOffset)) { DateTimeOffset dto = new DateTimeOffset(); return dto.Add((TimeSpan)value); } else { return Convert.ChangeType(((TimeSpan)value).Ticks, type, Globalization.CultureInfo.InvariantCulture); } } else if (type == typeof(DateTime) && oType == typeof(DateTimeOffset)) { return ((DateTimeOffset)value).DateTime; } else if (type == typeof(DateTimeOffset) && oType == typeof(DateTime)) { return new DateTimeOffset((DateTime)value); } else if (type == typeof(string) && !(typeof(IConvertible).IsAssignableFrom(oType))) { if (oType == typeof(char[])) { return new String((char[])value); } else { return value.ToString(); } } else if (oType == typeof(string)) { if (type == typeof(Guid)) { return new Guid((string)value); } else if (type == typeof(char[])) { return ((String)value).ToCharArray(); } else if (type == typeof(System.Xml.Linq.XDocument) && (string)value == string.Empty) { return new System.Xml.Linq.XDocument(); } else if (!(typeof(IConvertible).IsAssignableFrom(type)) && (mi = type.GetMethod("Parse", BindingFlags.Static | BindingFlags.Public, null, StringArg, null)) != null) { try { return mi.Invoke(null, new object[] { value }); } catch (TargetInvocationException t) { throw t.GetBaseException(); } } else { return Convert.ChangeType(value, type, Globalization.CultureInfo.InvariantCulture); } } else if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(IQueryable<>) && typeof(IEnumerable<>).MakeGenericType(type.GetGenericArguments()[0]).IsAssignableFrom(oType) ) { return Queryable.AsQueryable((IEnumerable)value); } else { try { return Convert.ChangeType(value, type, Globalization.CultureInfo.InvariantCulture); } catch (InvalidCastException) { throw Error.CouldNotConvert(value.GetType(), type); } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. using System.Data.Common; using System.Data.SqlClient; using System.Linq.Expressions; using System.IO; using System.Reflection; using System.Text; using System.Runtime.Serialization.Formatters.Binary; using System.Linq; using System.Collections.Generic; using System.Collections; using System.Diagnostics.CodeAnalysis; namespace System.Data.Linq { public static class DBConvert { private static Type[] StringArg = new Type[] { typeof(string) }; [SuppressMessage("Microsoft.Design", "CA1004:GenericMethodsShouldProvideTypeParameter", Justification = "[....]: Generic parameters are required for strong-typing of the return type.")] public static T ChangeType (object value) { return (T)ChangeType(value, typeof(T)); } [SuppressMessage("Microsoft.Performance", "CA1800:DoNotCastUnnecessarily", Justification = "[....]: Cast is dependent on node type and casts do not happen unecessarily in a single code path.")] [SuppressMessage("Microsoft.Maintainability", "CA1502:AvoidExcessiveComplexity", Justification = "These issues are related to our use of if-then and case statements for node types, which adds to the complexity count however when reviewed they are easy to navigate and understand.")] public static object ChangeType(object value, Type type) { if (value == null) return null; MethodInfo mi; type = System.Data.Linq.SqlClient.TypeSystem.GetNonNullableType(type); Type oType = value.GetType(); if (type.IsAssignableFrom(value.GetType())) return value; if (type == typeof(Binary)) { if (oType == typeof(byte[])) { return new Binary((byte[])value); } else if (oType == typeof(Guid)) { return new Binary(((Guid)value).ToByteArray()); } else { BinaryFormatter formatter = new BinaryFormatter(); byte[] streamArray; using (MemoryStream stream = new MemoryStream()) { formatter.Serialize(stream, value); streamArray = stream.ToArray(); } return new Binary(streamArray); } } else if (type == typeof(byte[])) { if (oType == typeof(Binary)) { return ((Binary)value).ToArray(); } else if (oType == typeof(Guid)) { return ((Guid)value).ToByteArray(); } else { BinaryFormatter formatter = new BinaryFormatter(); byte[] returnValue; using (MemoryStream stream = new MemoryStream()) { formatter.Serialize(stream, value); returnValue = stream.ToArray(); } return returnValue; } } else if (oType == typeof(byte[])) { if (type == typeof(Guid)) { return new Guid((byte[])value); } else { BinaryFormatter formatter = new BinaryFormatter(); object returnValue; using (MemoryStream stream = new MemoryStream((byte[])value)) { returnValue = ChangeType(formatter.Deserialize(stream), type); } return returnValue; } } else if (oType == typeof(Binary)) { if (type == typeof(Guid)) { return new Guid(((Binary)value).ToArray()); } else { BinaryFormatter formatter = new BinaryFormatter(); using (MemoryStream stream = new MemoryStream(((Binary)value).ToArray(), false)) { return ChangeType(formatter.Deserialize(stream), type); } } } else if (type.IsEnum) { if (oType == typeof(string)) { string text = ((string)value).Trim(); return Enum.Parse(type, text); } else { return Enum.ToObject(type, Convert.ChangeType(value, Enum.GetUnderlyingType(type), Globalization.CultureInfo.InvariantCulture)); } } else if (oType.IsEnum) { if (type == typeof(string)) { return Enum.GetName(oType, value); } else { return Convert.ChangeType(Convert.ChangeType(value, Enum.GetUnderlyingType(oType), Globalization.CultureInfo.InvariantCulture), type, Globalization.CultureInfo.InvariantCulture); } } else if (type == typeof(TimeSpan)) { if (oType == typeof(string)) { return TimeSpan.Parse((string)value); } else if (oType == typeof(DateTime)) { return DateTime.Parse(value.ToString(), Globalization.CultureInfo.InvariantCulture).TimeOfDay; } else if (oType == typeof(DateTimeOffset)) { return DateTimeOffset.Parse(value.ToString(), Globalization.CultureInfo.InvariantCulture).TimeOfDay; } else { return new TimeSpan((long)Convert.ChangeType(value, typeof(long), Globalization.CultureInfo.InvariantCulture)); } } else if (oType == typeof(TimeSpan)) { if (type == typeof(string)) { return value.ToString(); } else if (type == typeof(DateTime)) { DateTime dt = new DateTime(); return dt.Add((TimeSpan)value); } else if (type == typeof(DateTimeOffset)) { DateTimeOffset dto = new DateTimeOffset(); return dto.Add((TimeSpan)value); } else { return Convert.ChangeType(((TimeSpan)value).Ticks, type, Globalization.CultureInfo.InvariantCulture); } } else if (type == typeof(DateTime) && oType == typeof(DateTimeOffset)) { return ((DateTimeOffset)value).DateTime; } else if (type == typeof(DateTimeOffset) && oType == typeof(DateTime)) { return new DateTimeOffset((DateTime)value); } else if (type == typeof(string) && !(typeof(IConvertible).IsAssignableFrom(oType))) { if (oType == typeof(char[])) { return new String((char[])value); } else { return value.ToString(); } } else if (oType == typeof(string)) { if (type == typeof(Guid)) { return new Guid((string)value); } else if (type == typeof(char[])) { return ((String)value).ToCharArray(); } else if (type == typeof(System.Xml.Linq.XDocument) && (string)value == string.Empty) { return new System.Xml.Linq.XDocument(); } else if (!(typeof(IConvertible).IsAssignableFrom(type)) && (mi = type.GetMethod("Parse", BindingFlags.Static | BindingFlags.Public, null, StringArg, null)) != null) { try { return mi.Invoke(null, new object[] { value }); } catch (TargetInvocationException t) { throw t.GetBaseException(); } } else { return Convert.ChangeType(value, type, Globalization.CultureInfo.InvariantCulture); } } else if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(IQueryable<>) && typeof(IEnumerable<>).MakeGenericType(type.GetGenericArguments()[0]).IsAssignableFrom(oType) ) { return Queryable.AsQueryable((IEnumerable)value); } else { try { return Convert.ChangeType(value, type, Globalization.CultureInfo.InvariantCulture); } catch (InvalidCastException) { throw Error.CouldNotConvert(value.GetType(), type); } } } } } // 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
- ToolbarAUtomationPeer.cs
- XmlConvert.cs
- StylusPointProperty.cs
- LocatorGroup.cs
- ListBase.cs
- SafeMILHandle.cs
- Stack.cs
- OpenFileDialog.cs
- Vector3DCollectionConverter.cs
- HMACSHA256.cs
- MaskedTextProvider.cs
- HttpModulesSection.cs
- EditorPartCollection.cs
- BooleanFunctions.cs
- WebScriptMetadataFormatter.cs
- FrameworkPropertyMetadata.cs
- SubpageParagraph.cs
- InputProviderSite.cs
- CallbackValidator.cs
- ExtensionFile.cs
- X509Certificate2Collection.cs
- InstanceDataCollectionCollection.cs
- TextParagraphProperties.cs
- WindowsAltTab.cs
- SmtpReplyReaderFactory.cs
- WebRequest.cs
- datacache.cs
- ResolvedKeyFrameEntry.cs
- SecurityState.cs
- Hex.cs
- FlowDocumentPage.cs
- SqlLiftIndependentRowExpressions.cs
- FrameworkRichTextComposition.cs
- TransactionContextValidator.cs
- TreeView.cs
- DocumentReferenceCollection.cs
- PolicyManager.cs
- TrailingSpaceComparer.cs
- Pkcs7Signer.cs
- CollectionAdapters.cs
- ClockGroup.cs
- TableDetailsCollection.cs
- FormParameter.cs
- SyncMethodInvoker.cs
- HttpCachePolicyElement.cs
- _OverlappedAsyncResult.cs
- ClientRequest.cs
- Polyline.cs
- WebPartConnectionsConfigureVerb.cs
- LinearGradientBrush.cs
- MessageBox.cs
- ResourcePermissionBaseEntry.cs
- Int16Animation.cs
- ClientUtils.cs
- PopOutPanel.cs
- CriticalFinalizerObject.cs
- MatrixAnimationBase.cs
- DynamicILGenerator.cs
- ProfileGroupSettingsCollection.cs
- MsmqBindingElementBase.cs
- SqlUtil.cs
- WorkflowMessageEventHandler.cs
- TreeView.cs
- CalendarTable.cs
- StreamFormatter.cs
- AsymmetricSignatureFormatter.cs
- StrongNameIdentityPermission.cs
- Soap.cs
- EntityContainer.cs
- HashSetDebugView.cs
- SqlReorderer.cs
- _ContextAwareResult.cs
- sqlnorm.cs
- PlanCompilerUtil.cs
- ContextMenuStripGroupCollection.cs
- Effect.cs
- ChangeTracker.cs
- CachedRequestParams.cs
- ModelServiceImpl.cs
- Msec.cs
- TdsParserStaticMethods.cs
- MemberPath.cs
- DescendentsWalkerBase.cs
- SafeUserTokenHandle.cs
- Hashtable.cs
- ListViewTableCell.cs
- DesignerAdRotatorAdapter.cs
- MailBnfHelper.cs
- OleDbTransaction.cs
- StateItem.cs
- MexHttpsBindingCollectionElement.cs
- HttpConfigurationContext.cs
- ConditionChanges.cs
- AutomationEvent.cs
- AccessorTable.cs
- CollectionViewSource.cs
- RenderContext.cs
- SchemaRegistration.cs
- FreezableCollection.cs
- ConfigurationPropertyAttribute.cs