Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / FontUnitConverter.cs / 1 / FontUnitConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Globalization; using System.Reflection; using System.Security.Permissions; using System.Web.Util; ////// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class FontUnitConverter : TypeConverter { private StandardValuesCollection values; ///Converts a ///to and from a specified data type. /// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } else { return base.CanConvertFrom(context, sourceType); } } ///Determines if the specified data type can be converted to a ///. /// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value == null) return null; string stringValue = value as string; if (stringValue != null) { string textValue = stringValue.Trim(); if (textValue.Length == 0) { return FontUnit.Empty; } return FontUnit.Parse(textValue, culture); } else { return base.ConvertFrom(context, culture, value); } } ///Converts the specified ///into a . /// /// Returns a value indicating whether the converter can /// convert to the specified destination type. /// public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if ((destinationType == typeof(string)) || (destinationType == typeof(InstanceDescriptor))) { return true; } else { return base.CanConvertTo(context, destinationType); } } ////// public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == typeof(string)) { if ((value == null) || (((FontUnit)value).Type == FontSize.NotSet)) return String.Empty; else return ((FontUnit)value).ToString(culture); } else if ((destinationType == typeof(InstanceDescriptor)) && (value != null)) { FontUnit u = (FontUnit)value; MemberInfo member = null; object[] args = null; if (u.IsEmpty) { member = typeof(FontUnit).GetField("Empty"); } else if (u.Type != FontSize.AsUnit) { string fieldName = null; switch (u.Type) { case FontSize.Smaller: fieldName = "Smaller"; break; case FontSize.Larger: fieldName = "Larger"; break; case FontSize.XXSmall: fieldName = "XXSmall"; break; case FontSize.XSmall: fieldName = "XSmall"; break; case FontSize.Small: fieldName = "Small"; break; case FontSize.Medium: fieldName = "Medium"; break; case FontSize.Large: fieldName = "Large"; break; case FontSize.XLarge: fieldName = "XLarge"; break; case FontSize.XXLarge: fieldName = "XXLarge"; break; } Debug.Assert(fieldName != null, "Invalid FontSize type"); if (fieldName != null) { member = typeof(FontUnit).GetField(fieldName); } } else { member = typeof(FontUnit).GetConstructor(new Type[] { typeof(Unit) }); args = new object[] { u.Unit }; } Debug.Assert(member != null, "Looks like we're missing FontUnit static fields or FontUnit::ctor(Unit)"); if (member != null) { return new InstanceDescriptor(member, args); } else { return null; } } else { return base.ConvertTo(context, culture, value, destinationType); } } ///Converts the specified ///into the specified . /// public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { if (values == null) { object[] namedUnits = new object[] { FontUnit.Smaller, FontUnit.Larger, FontUnit.XXSmall, FontUnit.XSmall, FontUnit.Small, FontUnit.Medium, FontUnit.Large, FontUnit.XLarge, FontUnit.XXLarge }; values = new StandardValuesCollection(namedUnits); } return values; } ///Returns a ////// containing standard values. /// public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) { return false; } ///Indicates whether the specified context contains exclusive standard /// values. ////// public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } } }Indicates whether the specified context contains suppurted standard /// values. ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SHA384Managed.cs
- ObjectAnimationUsingKeyFrames.cs
- XmlSerializationWriter.cs
- TextParagraph.cs
- MultipartContentParser.cs
- OleDbPropertySetGuid.cs
- MouseWheelEventArgs.cs
- SqlFunctionAttribute.cs
- AppDomainFactory.cs
- Int32AnimationUsingKeyFrames.cs
- SourceInterpreter.cs
- remotingproxy.cs
- StreamGeometryContext.cs
- KeyGestureValueSerializer.cs
- MetadataWorkspace.cs
- WebPartsPersonalization.cs
- Merger.cs
- MetricEntry.cs
- ComponentConverter.cs
- PropertyHelper.cs
- FormsAuthenticationCredentials.cs
- InvokeGenerator.cs
- ObjectListField.cs
- ByteStream.cs
- ActiveXHelper.cs
- XPathSelectionIterator.cs
- ScrollContentPresenter.cs
- ConstNode.cs
- Helpers.cs
- FtpRequestCacheValidator.cs
- translator.cs
- HostedTcpTransportManager.cs
- SerTrace.cs
- PrimitiveSchema.cs
- DateTimeStorage.cs
- PeerCollaboration.cs
- XhtmlStyleClass.cs
- NameValueSectionHandler.cs
- DataGridViewCellValidatingEventArgs.cs
- AutomationPeer.cs
- Decoder.cs
- HyperLinkStyle.cs
- Figure.cs
- WindowsRichEdit.cs
- MsmqProcessProtocolHandler.cs
- LineInfo.cs
- ApplicationSettingsBase.cs
- FlowNode.cs
- BaseCodeDomTreeGenerator.cs
- InputReportEventArgs.cs
- PictureBox.cs
- BrushValueSerializer.cs
- ObjectManager.cs
- DragCompletedEventArgs.cs
- IteratorAsyncResult.cs
- FrameworkElement.cs
- _IPv6Address.cs
- ImageProxy.cs
- SspiHelper.cs
- AbsoluteQuery.cs
- SqlStream.cs
- PrintingPermissionAttribute.cs
- HttpClientCredentialType.cs
- RelAssertionDirectKeyIdentifierClause.cs
- SortQueryOperator.cs
- GrowingArray.cs
- MinimizableAttributeTypeConverter.cs
- BuildProviderInstallComponent.cs
- BinaryNode.cs
- StateManagedCollection.cs
- XD.cs
- NetworkInterface.cs
- CapabilitiesUse.cs
- CommandSet.cs
- ApplicationManager.cs
- ProtocolElementCollection.cs
- PropertyFilterAttribute.cs
- SelectionRange.cs
- XmlDocument.cs
- HandlerMappingMemo.cs
- InputProcessorProfilesLoader.cs
- EditorPartCollection.cs
- XmlSchemaChoice.cs
- ComponentResourceManager.cs
- FileChangesMonitor.cs
- TableParagraph.cs
- DoubleConverter.cs
- IdentityReference.cs
- TreeViewDesigner.cs
- WebPartChrome.cs
- DataGridViewCellLinkedList.cs
- CompilerTypeWithParams.cs
- EventLogPermissionEntryCollection.cs
- EventLogTraceListener.cs
- PriorityBinding.cs
- HttpGetClientProtocol.cs
- PathTooLongException.cs
- SecureEnvironment.cs
- PeerApplicationLaunchInfo.cs
- webproxy.cs