Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / CommonUI / System / Drawing / Printing / MarginsConverter.cs / 1 / MarginsConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Drawing.Printing { using System.Runtime.Serialization.Formatters; using System.Runtime.InteropServices; using System.Diagnostics; using System.Diagnostics.CodeAnalysis; using Microsoft.Win32; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Globalization; using System.Reflection; ////// /// public class MarginsConverter : ExpandableObjectConverter { ///Provides a /// type converter to convert ///to and from various other representations, such as a string. /// /// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } return base.CanConvertFrom(context, sourceType); } ///Determines if a converter can convert an object of the given source /// type to the native type of the converter. ////// /// 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. /// [SuppressMessage("Microsoft.Performance", "CA1808:AvoidCallsThatBoxValueTypes")] public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { string strValue = value as string; if (strValue != null) { string text = strValue.Trim(); if (text.Length == 0) { return null; } else { // Parse 4 integer values. // if (culture == null) { culture = CultureInfo.CurrentCulture; } char sep = culture.TextInfo.ListSeparator[0]; string[] tokens = text.Split(new char[] {sep}); int[] values = new int[tokens.Length]; TypeConverter intConverter = TypeDescriptor.GetConverter(typeof(int)); for (int i = 0; i < values.Length; i++) { // Note: ConvertFromString will raise exception if value cannot be converted. values[i] = (int)intConverter.ConvertFromString(context, culture, tokens[i]); } if (values.Length != 4) { throw new ArgumentException(SR.GetString(SR.TextParseFailedFormat, text, "left, right, top, bottom")); } return new Margins(values[0], values[1], values[2], values[3]); } } 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. /// [SuppressMessage("Microsoft.Performance", "CA1800:DoNotCastUnnecessarily")] public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) { throw new ArgumentNullException("destinationType"); } if( value is Margins ){ if (destinationType == typeof(string)) { Margins margins = (Margins)value; if (culture == null) { culture = CultureInfo.CurrentCulture; } string sep = culture.TextInfo.ListSeparator + " "; TypeConverter intConverter = TypeDescriptor.GetConverter(typeof(int)); string[] args = new string[4]; int nArg = 0; // Note: ConvertToString will raise exception if value cannot be converted. args[nArg++] = intConverter.ConvertToString(context, culture, margins.Left); args[nArg++] = intConverter.ConvertToString(context, culture, margins.Right); args[nArg++] = intConverter.ConvertToString(context, culture, margins.Top); args[nArg++] = intConverter.ConvertToString(context, culture, margins.Bottom); return string.Join(sep, args); } if (destinationType == typeof(InstanceDescriptor)) { Margins margins = (Margins)value; ConstructorInfo ctor = typeof(Margins).GetConstructor(new Type[] { typeof(int), typeof(int), typeof(int), typeof(int)}); if (ctor != null) { return new InstanceDescriptor(ctor, new object[] { margins.Left, margins.Right, margins.Top, margins.Bottom}); } } } return base.ConvertTo(context, culture, value, destinationType); } ////// /// Creates an instance of this type given a set of property values /// for the object. This is useful for objects that are immutable, but still /// want to provide changable properties. /// [SuppressMessage("Microsoft.Performance", "CA1808:AvoidCallsThatBoxValueTypes")] [SuppressMessage("Microsoft.Security", "CA2102:CatchNonClsCompliantExceptionsInGeneralHandlers")] public override object CreateInstance(ITypeDescriptorContext context, IDictionary propertyValues) { if( propertyValues == null ){ throw new ArgumentNullException("propertyValues"); } object left = propertyValues["Left"]; object right = propertyValues["Right"]; object top = propertyValues["Top"]; object bottom = propertyValues["Bottom"]; if(left == null || right == null || bottom == null || top == null || !(left is int) || !(right is int) || !(bottom is int) || !(top is int)) { throw new ArgumentException(SR.GetString(SR.PropertyValueInvalidEntry)); } return new Margins((int)left, (int)right, (int)top, (int)bottom); } ////// /// Determines if changing a value on this object should require a call to /// CreateInstance to create a new value. /// public override bool GetCreateInstanceSupported(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.Printing { using System.Runtime.Serialization.Formatters; using System.Runtime.InteropServices; using System.Diagnostics; using System.Diagnostics.CodeAnalysis; using Microsoft.Win32; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Globalization; using System.Reflection; ////// /// public class MarginsConverter : ExpandableObjectConverter { ///Provides a /// type converter to convert ///to and from various other representations, such as a string. /// /// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } return base.CanConvertFrom(context, sourceType); } ///Determines if a converter can convert an object of the given source /// type to the native type of the converter. ////// /// 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. /// [SuppressMessage("Microsoft.Performance", "CA1808:AvoidCallsThatBoxValueTypes")] public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { string strValue = value as string; if (strValue != null) { string text = strValue.Trim(); if (text.Length == 0) { return null; } else { // Parse 4 integer values. // if (culture == null) { culture = CultureInfo.CurrentCulture; } char sep = culture.TextInfo.ListSeparator[0]; string[] tokens = text.Split(new char[] {sep}); int[] values = new int[tokens.Length]; TypeConverter intConverter = TypeDescriptor.GetConverter(typeof(int)); for (int i = 0; i < values.Length; i++) { // Note: ConvertFromString will raise exception if value cannot be converted. values[i] = (int)intConverter.ConvertFromString(context, culture, tokens[i]); } if (values.Length != 4) { throw new ArgumentException(SR.GetString(SR.TextParseFailedFormat, text, "left, right, top, bottom")); } return new Margins(values[0], values[1], values[2], values[3]); } } 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. /// [SuppressMessage("Microsoft.Performance", "CA1800:DoNotCastUnnecessarily")] public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) { throw new ArgumentNullException("destinationType"); } if( value is Margins ){ if (destinationType == typeof(string)) { Margins margins = (Margins)value; if (culture == null) { culture = CultureInfo.CurrentCulture; } string sep = culture.TextInfo.ListSeparator + " "; TypeConverter intConverter = TypeDescriptor.GetConverter(typeof(int)); string[] args = new string[4]; int nArg = 0; // Note: ConvertToString will raise exception if value cannot be converted. args[nArg++] = intConverter.ConvertToString(context, culture, margins.Left); args[nArg++] = intConverter.ConvertToString(context, culture, margins.Right); args[nArg++] = intConverter.ConvertToString(context, culture, margins.Top); args[nArg++] = intConverter.ConvertToString(context, culture, margins.Bottom); return string.Join(sep, args); } if (destinationType == typeof(InstanceDescriptor)) { Margins margins = (Margins)value; ConstructorInfo ctor = typeof(Margins).GetConstructor(new Type[] { typeof(int), typeof(int), typeof(int), typeof(int)}); if (ctor != null) { return new InstanceDescriptor(ctor, new object[] { margins.Left, margins.Right, margins.Top, margins.Bottom}); } } } return base.ConvertTo(context, culture, value, destinationType); } ////// /// Creates an instance of this type given a set of property values /// for the object. This is useful for objects that are immutable, but still /// want to provide changable properties. /// [SuppressMessage("Microsoft.Performance", "CA1808:AvoidCallsThatBoxValueTypes")] [SuppressMessage("Microsoft.Security", "CA2102:CatchNonClsCompliantExceptionsInGeneralHandlers")] public override object CreateInstance(ITypeDescriptorContext context, IDictionary propertyValues) { if( propertyValues == null ){ throw new ArgumentNullException("propertyValues"); } object left = propertyValues["Left"]; object right = propertyValues["Right"]; object top = propertyValues["Top"]; object bottom = propertyValues["Bottom"]; if(left == null || right == null || bottom == null || top == null || !(left is int) || !(right is int) || !(bottom is int) || !(top is int)) { throw new ArgumentException(SR.GetString(SR.PropertyValueInvalidEntry)); } return new Margins((int)left, (int)right, (int)top, (int)bottom); } ////// /// Determines if changing a value on this object should require a call to /// CreateInstance to create a new value. /// public override bool GetCreateInstanceSupported(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
- DefaultExpression.cs
- NamespaceDecl.cs
- HelpPage.cs
- LocalFileSettingsProvider.cs
- SelectionEditor.cs
- XmlEncoding.cs
- RelationshipEntry.cs
- odbcmetadatacollectionnames.cs
- EventLogPermissionAttribute.cs
- ObjectDataSourceMethodEventArgs.cs
- UnsafeNativeMethods.cs
- UserControl.cs
- EdmItemCollection.cs
- MenuAdapter.cs
- OperationResponse.cs
- MethodExpr.cs
- UnaryOperationBinder.cs
- PointCollection.cs
- RestHandlerFactory.cs
- TraceContextEventArgs.cs
- PrintingPermissionAttribute.cs
- XmlValidatingReader.cs
- VisemeEventArgs.cs
- DbgUtil.cs
- ChannelBinding.cs
- PenThreadWorker.cs
- DoubleIndependentAnimationStorage.cs
- CounterCreationDataCollection.cs
- IWorkflowDebuggerService.cs
- WebPartPersonalization.cs
- InternalConfigRoot.cs
- WebConfigurationManager.cs
- ThreadStartException.cs
- String.cs
- ExternalDataExchangeService.cs
- VariableModifiersHelper.cs
- MenuAdapter.cs
- XmlReflectionImporter.cs
- ClientTarget.cs
- ConstantCheck.cs
- PackUriHelper.cs
- SqlConnectionString.cs
- WebReferenceCollection.cs
- TileModeValidation.cs
- ExpressionVisitor.cs
- XmlSchemaObjectTable.cs
- DocumentAutomationPeer.cs
- FillBehavior.cs
- DispatcherExceptionEventArgs.cs
- ContentPlaceHolderDesigner.cs
- RequiredFieldValidator.cs
- XPathDocument.cs
- WebPart.cs
- MailMessageEventArgs.cs
- FigureHelper.cs
- PropertyGeneratedEventArgs.cs
- WebBrowserEvent.cs
- MethodSignatureGenerator.cs
- SweepDirectionValidation.cs
- ColumnTypeConverter.cs
- TextElementEnumerator.cs
- XsltArgumentList.cs
- Form.cs
- XamlBuildProvider.cs
- ReaderContextStackData.cs
- PerformanceCountersElement.cs
- HtmlElement.cs
- PointAnimation.cs
- RefreshEventArgs.cs
- BackgroundWorker.cs
- Visitors.cs
- TransformationRules.cs
- SymbolType.cs
- InvalidOleVariantTypeException.cs
- XmlCompatibilityReader.cs
- TagMapCollection.cs
- BuildResultCache.cs
- UnsafeNativeMethods.cs
- ByteAnimationUsingKeyFrames.cs
- Nodes.cs
- XsltSettings.cs
- ConcurrentBag.cs
- CharStorage.cs
- HtmlInputControl.cs
- HighlightComponent.cs
- DataSet.cs
- WebPartDisplayModeEventArgs.cs
- SqlBulkCopyColumnMappingCollection.cs
- PropertyGridView.cs
- SecurityException.cs
- TreeViewCancelEvent.cs
- PropertySourceInfo.cs
- MimeImporter.cs
- KeySpline.cs
- WorkflowQueuingService.cs
- NavigationHelper.cs
- Buffer.cs
- AnimationLayer.cs
- TextRangeEditTables.cs
- GridViewUpdatedEventArgs.cs