Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / CommonUI / System / Drawing / IconConverter.cs / 1 / IconConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Drawing { using System.Runtime.Serialization.Formatters; using System.Runtime.InteropServices; using System.IO; using System.Diagnostics; using Microsoft.Win32; using System.Collections; using System.ComponentModel; using System.Globalization; using System.Reflection; using System.ComponentModel.Design.Serialization; using System.Diagnostics.CodeAnalysis; ////// /// IconConverter is a class that can be used to convert /// Icon from one data type to another. Access this /// class through the TypeDescriptor. /// public class IconConverter : ExpandableObjectConverter { ////// /// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(byte[])) { return true; } if(sourceType == typeof(InstanceDescriptor)){ return false; } return base.CanConvertFrom(context, sourceType); } ///Gets a value indicating whether this converter can /// convert an object in the given source type to the native type of the converter /// using the context. ////// /// public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(Image) || destinationType == typeof(Bitmap)) { return true; } if (destinationType == typeof(byte[])) { return true; } return base.CanConvertTo(context, destinationType); } ///Gets a value indicating whether this converter can /// convert an object to the given destination type using the context. ////// /// [SuppressMessage("Microsoft.Performance", "CA1800:DoNotCastUnnecessarily")] public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value is byte[]) { MemoryStream ms = new MemoryStream((byte[])value); return new Icon(ms); } return base.ConvertFrom(context, culture, value); } ///Converts the given object to the converter's native type. ////// /// Converts the given object to another type. The most common types to convert /// are to and from a string object. The default implementation will make a call /// to ToString on the object if the object is valid and if the destination /// type is string. If this cannot convert to the desitnation type, this will /// throw a NotSupportedException. /// [SuppressMessage("Microsoft.Performance", "CA1800:DoNotCastUnnecessarily")] [SuppressMessage("Microsoft.Reliability", "CA2000:DisposeObjectsBeforeLosingScope")] public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) { throw new ArgumentNullException("destinationType"); } if (destinationType == typeof(Image) || destinationType == typeof(Bitmap)) { Icon icon = value as Icon; if( icon != null ) { return icon.ToBitmap(); } } if (destinationType == typeof(string)) { if (value != null) { return value.ToString(); } else { return SR.GetString(SR.toStringNone); } } if (destinationType == typeof(byte[])) { if (value != null) { MemoryStream ms = null; try { ms = new MemoryStream(); Icon icon = value as Icon; if( icon != null ) { icon.Save(ms); } } finally { if (ms != null) { ms.Close(); } } if (ms != null) { return ms.ToArray(); } else { return null; } } else { return new byte[0]; } } return base.ConvertTo(context, culture, value, destinationType); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Drawing { using System.Runtime.Serialization.Formatters; using System.Runtime.InteropServices; using System.IO; using System.Diagnostics; using Microsoft.Win32; using System.Collections; using System.ComponentModel; using System.Globalization; using System.Reflection; using System.ComponentModel.Design.Serialization; using System.Diagnostics.CodeAnalysis; ////// /// IconConverter is a class that can be used to convert /// Icon from one data type to another. Access this /// class through the TypeDescriptor. /// public class IconConverter : ExpandableObjectConverter { ////// /// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(byte[])) { return true; } if(sourceType == typeof(InstanceDescriptor)){ return false; } return base.CanConvertFrom(context, sourceType); } ///Gets a value indicating whether this converter can /// convert an object in the given source type to the native type of the converter /// using the context. ////// /// public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(Image) || destinationType == typeof(Bitmap)) { return true; } if (destinationType == typeof(byte[])) { return true; } return base.CanConvertTo(context, destinationType); } ///Gets a value indicating whether this converter can /// convert an object to the given destination type using the context. ////// /// [SuppressMessage("Microsoft.Performance", "CA1800:DoNotCastUnnecessarily")] public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value is byte[]) { MemoryStream ms = new MemoryStream((byte[])value); return new Icon(ms); } return base.ConvertFrom(context, culture, value); } ///Converts the given object to the converter's native type. ////// /// Converts the given object to another type. The most common types to convert /// are to and from a string object. The default implementation will make a call /// to ToString on the object if the object is valid and if the destination /// type is string. If this cannot convert to the desitnation type, this will /// throw a NotSupportedException. /// [SuppressMessage("Microsoft.Performance", "CA1800:DoNotCastUnnecessarily")] [SuppressMessage("Microsoft.Reliability", "CA2000:DisposeObjectsBeforeLosingScope")] public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) { throw new ArgumentNullException("destinationType"); } if (destinationType == typeof(Image) || destinationType == typeof(Bitmap)) { Icon icon = value as Icon; if( icon != null ) { return icon.ToBitmap(); } } if (destinationType == typeof(string)) { if (value != null) { return value.ToString(); } else { return SR.GetString(SR.toStringNone); } } if (destinationType == typeof(byte[])) { if (value != null) { MemoryStream ms = null; try { ms = new MemoryStream(); Icon icon = value as Icon; if( icon != null ) { icon.Save(ms); } } finally { if (ms != null) { ms.Close(); } } if (ms != null) { return ms.ToArray(); } else { return null; } } else { return new byte[0]; } } return base.ConvertTo(context, culture, value, destinationType); } } } // 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
- CursorConverter.cs
- HTMLTextWriter.cs
- CodeParameterDeclarationExpressionCollection.cs
- BamlMapTable.cs
- AttributeParameterInfo.cs
- DirectoryNotFoundException.cs
- HttpProcessUtility.cs
- CreateUserErrorEventArgs.cs
- SqlExpressionNullability.cs
- DeviceSpecificDesigner.cs
- UriTemplateTableMatchCandidate.cs
- FontDriver.cs
- ModifierKeysValueSerializer.cs
- CredentialCache.cs
- DesigntimeLicenseContext.cs
- HtmlInputHidden.cs
- ConfigurationSectionGroup.cs
- PropertyEmitter.cs
- GregorianCalendarHelper.cs
- HwndStylusInputProvider.cs
- DropDownButton.cs
- Errors.cs
- ValidationError.cs
- Schema.cs
- SiteMapPath.cs
- SmiEventSink_DeferedProcessing.cs
- CacheMemory.cs
- Point4D.cs
- ToolStripLabel.cs
- FieldValue.cs
- ScriptServiceAttribute.cs
- CodeMethodReturnStatement.cs
- MethodCallConverter.cs
- WebException.cs
- FlowLayoutPanel.cs
- EdmSchemaAttribute.cs
- XamlTypeMapperSchemaContext.cs
- CodeTypeDeclarationCollection.cs
- Geometry.cs
- ComponentSerializationService.cs
- FixedSOMLineRanges.cs
- PeerTransportSecuritySettings.cs
- ProfileService.cs
- MetadataArtifactLoaderComposite.cs
- TextChange.cs
- TemplateXamlParser.cs
- WindowsToolbar.cs
- _NegoStream.cs
- RequestSecurityTokenSerializer.cs
- VisualStyleInformation.cs
- SoapFormatter.cs
- DoubleUtil.cs
- EnumBuilder.cs
- IncomingWebResponseContext.cs
- WebPartCatalogCloseVerb.cs
- LinkConverter.cs
- SecurityContext.cs
- MULTI_QI.cs
- BypassElement.cs
- SmiContextFactory.cs
- RoutedEventArgs.cs
- ToolStripOverflow.cs
- MsmqIntegrationSecurityMode.cs
- HashSetEqualityComparer.cs
- SqlDataSourceRefreshSchemaForm.cs
- WorkflowDebuggerSteppingAttribute.cs
- NumericExpr.cs
- GridView.cs
- EventEntry.cs
- DocumentSequence.cs
- PageBreakRecord.cs
- TreeView.cs
- RegularExpressionValidator.cs
- IndependentlyAnimatedPropertyMetadata.cs
- followingsibling.cs
- CodeDirectiveCollection.cs
- NumericPagerField.cs
- MetadataUtilsSmi.cs
- LoginAutoFormat.cs
- WebZone.cs
- EndpointDiscoveryMetadataCD1.cs
- XmlILStorageConverter.cs
- CombinedGeometry.cs
- counter.cs
- LinqExpressionNormalizer.cs
- EUCJPEncoding.cs
- AspNetCompatibilityRequirementsMode.cs
- WebConvert.cs
- AnnotationDocumentPaginator.cs
- MailDefinitionBodyFileNameEditor.cs
- DataGridCellAutomationPeer.cs
- EncoderNLS.cs
- Point3D.cs
- XmlDataLoader.cs
- FixedSchema.cs
- RegularExpressionValidator.cs
- WebHttpBindingElement.cs
- diagnosticsswitches.cs
- ToolStripPanelRenderEventArgs.cs
- XmlSchemas.cs