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 / Advanced / ImageFormatConverter.cs / 1 / ImageFormatConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Drawing { using System.Diagnostics; using Microsoft.Win32; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Globalization; using System.Reflection; using System.Drawing.Imaging; ////// /// ImageFormatConverter is a class that can be used to convert /// colors from one data type to another. Access this /// class through the TypeDescriptor. /// public class ImageFormatConverter : TypeConverter { private StandardValuesCollection values; ////// /// public ImageFormatConverter() { } ///[To be supplied.] ////// /// Determines if this converter can convert an object in the given source /// type to the native type of the converter. /// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } return base.CanConvertFrom(context, sourceType); } ////// /// public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(InstanceDescriptor)) { 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. ////// /// Converts the given object to the converter's native type. /// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { string strValue = value as string; if (strValue != null) { string text = strValue.Trim(); PropertyInfo[] props = GetProperties(); for (int i = 0; i < props.Length; i++) { PropertyInfo prop = props[i]; if (string.Equals(prop.Name, text, StringComparison.OrdinalIgnoreCase)) { object[] tempIndex = null; return prop.GetValue(null, tempIndex); } } } return base.ConvertFrom(context, culture, value); } ////// /// 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. /// public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) { throw new ArgumentNullException("destinationType"); } if (value is ImageFormat) { PropertyInfo targetProp = null; PropertyInfo[] props = GetProperties(); foreach(PropertyInfo p in props) { if (p.GetValue(null, null).Equals(value)) { targetProp = p; break; } } if (targetProp != null) { if (destinationType == typeof(string)) { return targetProp.Name; } else if (destinationType == typeof(InstanceDescriptor)) { return new InstanceDescriptor(targetProp, null); } } } return base.ConvertTo(context, culture, value, destinationType); } ////// /// Retrieves the properties for the available image formats. /// private PropertyInfo[] GetProperties() { return typeof(ImageFormat).GetProperties(BindingFlags.Static | BindingFlags.Public); } ////// /// Retrieves a collection containing a set of standard values /// for the data type this validator is designed for. This /// will return null if the data type does not support a /// standard set of values. /// public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { if (values == null) { ArrayList list = new ArrayList(); PropertyInfo[] props = GetProperties(); for (int i = 0; i < props.Length; i++) { PropertyInfo prop = props[i]; object[] tempIndex = null; Debug.Assert(prop.GetValue(null, tempIndex) != null, "Property " + prop.Name + " returned NULL"); list.Add(prop.GetValue(null, tempIndex)); } values = new StandardValuesCollection(list.ToArray()); } return values; } ////// /// Determines if this object supports a standard set of values /// that can be picked from a list. /// public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Drawing { using System.Diagnostics; using Microsoft.Win32; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Globalization; using System.Reflection; using System.Drawing.Imaging; ////// /// ImageFormatConverter is a class that can be used to convert /// colors from one data type to another. Access this /// class through the TypeDescriptor. /// public class ImageFormatConverter : TypeConverter { private StandardValuesCollection values; ////// /// public ImageFormatConverter() { } ///[To be supplied.] ////// /// Determines if this converter can convert an object in the given source /// type to the native type of the converter. /// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } return base.CanConvertFrom(context, sourceType); } ////// /// public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(InstanceDescriptor)) { 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. ////// /// Converts the given object to the converter's native type. /// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { string strValue = value as string; if (strValue != null) { string text = strValue.Trim(); PropertyInfo[] props = GetProperties(); for (int i = 0; i < props.Length; i++) { PropertyInfo prop = props[i]; if (string.Equals(prop.Name, text, StringComparison.OrdinalIgnoreCase)) { object[] tempIndex = null; return prop.GetValue(null, tempIndex); } } } return base.ConvertFrom(context, culture, value); } ////// /// 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. /// public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) { throw new ArgumentNullException("destinationType"); } if (value is ImageFormat) { PropertyInfo targetProp = null; PropertyInfo[] props = GetProperties(); foreach(PropertyInfo p in props) { if (p.GetValue(null, null).Equals(value)) { targetProp = p; break; } } if (targetProp != null) { if (destinationType == typeof(string)) { return targetProp.Name; } else if (destinationType == typeof(InstanceDescriptor)) { return new InstanceDescriptor(targetProp, null); } } } return base.ConvertTo(context, culture, value, destinationType); } ////// /// Retrieves the properties for the available image formats. /// private PropertyInfo[] GetProperties() { return typeof(ImageFormat).GetProperties(BindingFlags.Static | BindingFlags.Public); } ////// /// Retrieves a collection containing a set of standard values /// for the data type this validator is designed for. This /// will return null if the data type does not support a /// standard set of values. /// public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { if (values == null) { ArrayList list = new ArrayList(); PropertyInfo[] props = GetProperties(); for (int i = 0; i < props.Length; i++) { PropertyInfo prop = props[i]; object[] tempIndex = null; Debug.Assert(prop.GetValue(null, tempIndex) != null, "Property " + prop.Name + " returned NULL"); list.Add(prop.GetValue(null, tempIndex)); } values = new StandardValuesCollection(list.ToArray()); } return values; } ////// /// Determines if this object supports a standard set of values /// that can be picked from a list. /// public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } } } // 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
- PerformanceCounter.cs
- XmlTextReaderImpl.cs
- Size3D.cs
- configsystem.cs
- NullableFloatMinMaxAggregationOperator.cs
- SizeAnimationBase.cs
- HighlightComponent.cs
- TargetException.cs
- ComplexTypeEmitter.cs
- Options.cs
- HttpDictionary.cs
- KerberosSecurityTokenProvider.cs
- UpdatableWrapper.cs
- NotCondition.cs
- MainMenu.cs
- MexTcpBindingCollectionElement.cs
- LazyTextWriterCreator.cs
- CurrencyWrapper.cs
- PropertyPath.cs
- NamespaceEmitter.cs
- DependencyObjectType.cs
- ContentFileHelper.cs
- HttpRuntimeSection.cs
- SqlRowUpdatedEvent.cs
- ImportContext.cs
- ReadWriteObjectLock.cs
- ServicesUtilities.cs
- ArgumentsParser.cs
- StrokeRenderer.cs
- CapabilitiesSection.cs
- ArgumentElement.cs
- AppDomain.cs
- DataGridViewComboBoxCell.cs
- ManagementOptions.cs
- ProfileService.cs
- ConnectionStringsExpressionBuilder.cs
- DESCryptoServiceProvider.cs
- InstancePersistenceException.cs
- Variable.cs
- LinearKeyFrames.cs
- DecoratedNameAttribute.cs
- XmlReader.cs
- DateTime.cs
- rsa.cs
- TemplateControl.cs
- SchemaElement.cs
- ViewEventArgs.cs
- Normalization.cs
- BitmapImage.cs
- InstanceView.cs
- RootBuilder.cs
- SoapHeaderException.cs
- TextStore.cs
- DataControlFieldCell.cs
- CurrentChangingEventManager.cs
- Int64Converter.cs
- WebPartAuthorizationEventArgs.cs
- ColumnBinding.cs
- DecimalAnimation.cs
- WindowsFormsSectionHandler.cs
- ListViewDeleteEventArgs.cs
- GridViewPageEventArgs.cs
- SqlTrackingQuery.cs
- TimeSpanSecondsConverter.cs
- SecurityBindingElement.cs
- ErrorRuntimeConfig.cs
- RegistrationServices.cs
- iisPickupDirectory.cs
- AspProxy.cs
- SessionStateUtil.cs
- InputProcessorProfilesLoader.cs
- EditorZoneDesigner.cs
- WindowsFormsHostPropertyMap.cs
- ConvertTextFrag.cs
- SamlNameIdentifierClaimResource.cs
- AlternationConverter.cs
- ErrorFormatterPage.cs
- ProviderUtil.cs
- TextureBrush.cs
- NavigationPropertyEmitter.cs
- BaseTreeIterator.cs
- ThreadSafeList.cs
- XPathParser.cs
- ContextMenuService.cs
- TraceContext.cs
- Constant.cs
- CommandLibraryHelper.cs
- StrokeDescriptor.cs
- MeshGeometry3D.cs
- FixedSOMPage.cs
- EnumConverter.cs
- ToolboxItemAttribute.cs
- ReadOnlyDataSourceView.cs
- DataAccessException.cs
- AnnotationHighlightLayer.cs
- XmlImplementation.cs
- SessionStateModule.cs
- AssociationTypeEmitter.cs
- CopyOnWriteList.cs
- ControlPropertyNameConverter.cs