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
- SafeSecurityHandles.cs
- QueueAccessMode.cs
- MouseOverProperty.cs
- TabletDevice.cs
- printdlgexmarshaler.cs
- MediaEntryAttribute.cs
- SortedDictionary.cs
- NumericUpDown.cs
- TickBar.cs
- DocComment.cs
- DifferencingCollection.cs
- ItemsControl.cs
- PageHandlerFactory.cs
- __TransparentProxy.cs
- AttachedProperty.cs
- ProfileProvider.cs
- OutputCacheProfile.cs
- DBParameter.cs
- XamlTypeMapper.cs
- ValueType.cs
- storagemappingitemcollection.viewdictionary.cs
- DrawListViewColumnHeaderEventArgs.cs
- LinqDataSourceStatusEventArgs.cs
- ExpandableObjectConverter.cs
- CryptoApi.cs
- CodeExpressionCollection.cs
- SqlDataSourceCache.cs
- FlowLayout.cs
- WindowsIdentity.cs
- EnvelopedSignatureTransform.cs
- EntitySetBase.cs
- WindowsFormsLinkLabel.cs
- Logging.cs
- FuncCompletionCallbackWrapper.cs
- ObjectStateManagerMetadata.cs
- MouseEventArgs.cs
- PeerContact.cs
- StylusEventArgs.cs
- GenericWebPart.cs
- ValidatingPropertiesEventArgs.cs
- PtsCache.cs
- ZeroOpNode.cs
- ACE.cs
- ControlPager.cs
- XmlDataSourceView.cs
- FormsIdentity.cs
- WebPartConnectionsEventArgs.cs
- InsufficientMemoryException.cs
- TransformGroup.cs
- InputScopeConverter.cs
- TextEditorContextMenu.cs
- Vector3D.cs
- DetailsViewDeletedEventArgs.cs
- HttpRequestCacheValidator.cs
- ConfigXmlElement.cs
- DictionaryContent.cs
- DataKeyArray.cs
- SevenBitStream.cs
- InkCollectionBehavior.cs
- DataGridViewCellParsingEventArgs.cs
- RequestQueue.cs
- ToolBarButton.cs
- ApplicationSecurityManager.cs
- StaticSiteMapProvider.cs
- PublisherMembershipCondition.cs
- SortExpressionBuilder.cs
- Buffer.cs
- MemberHolder.cs
- TreeWalker.cs
- ObjectHandle.cs
- GridViewPageEventArgs.cs
- SecurityManager.cs
- TemplateApplicationHelper.cs
- IsolatedStorage.cs
- SamlAssertionDirectKeyIdentifierClause.cs
- ChangeProcessor.cs
- AssociationSetEnd.cs
- ModelChangedEventArgsImpl.cs
- ModuleConfigurationInfo.cs
- RelationalExpressions.cs
- StringConverter.cs
- HMACSHA1.cs
- TextInfo.cs
- WeakReferenceKey.cs
- TreeNodeSelectionProcessor.cs
- SequentialOutput.cs
- DBDataPermissionAttribute.cs
- PointUtil.cs
- DbFunctionCommandTree.cs
- PlaceHolder.cs
- XmlNamespaceDeclarationsAttribute.cs
- BehaviorEditorPart.cs
- GacUtil.cs
- DataBindingCollection.cs
- PropertyTabChangedEvent.cs
- TCPListener.cs
- RectAnimationBase.cs
- Brush.cs
- ListenerElementsCollection.cs
- MSAAEventDispatcher.cs