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
- PerformanceCounterNameAttribute.cs
- NegatedCellConstant.cs
- Win32Interop.cs
- HashHelper.cs
- XmlSchemaAttributeGroupRef.cs
- CmsInterop.cs
- FileCodeGroup.cs
- _NegoStream.cs
- TextOptionsInternal.cs
- Query.cs
- MailHeaderInfo.cs
- CompositeCollectionView.cs
- ReflectPropertyDescriptor.cs
- SoapAttributes.cs
- Image.cs
- ExpressionBindingCollection.cs
- DoubleConverter.cs
- entityreference_tresulttype.cs
- AdornerPresentationContext.cs
- ImageBrush.cs
- ToolStripSplitButton.cs
- HtmlInputRadioButton.cs
- WebPartConnectionCollection.cs
- PartialCachingControl.cs
- QueryStringParameter.cs
- ApplicationInfo.cs
- EntityDataSourceView.cs
- ZipArchive.cs
- CompositeFontFamily.cs
- COM2IPerPropertyBrowsingHandler.cs
- HashLookup.cs
- ListBoxAutomationPeer.cs
- TextOutput.cs
- ItemDragEvent.cs
- PropVariant.cs
- DataListItemCollection.cs
- CommandValueSerializer.cs
- ComponentChangedEvent.cs
- IOException.cs
- HierarchicalDataSourceControl.cs
- BindingMAnagerBase.cs
- PerformanceCounter.cs
- _SslState.cs
- ReaderWriterLockWrapper.cs
- MethodRental.cs
- OracleParameter.cs
- TargetParameterCountException.cs
- ExecutedRoutedEventArgs.cs
- FontWeights.cs
- PerformanceCounterManager.cs
- _CommandStream.cs
- NetworkCredential.cs
- SecurityDescriptor.cs
- RoleGroupCollection.cs
- ValueExpressions.cs
- PointAnimationClockResource.cs
- ObjectQuery.cs
- TextCompositionEventArgs.cs
- WindowsFormsHostPropertyMap.cs
- XmlLinkedNode.cs
- NetworkInterface.cs
- TemplatedControlDesigner.cs
- SmtpReplyReaderFactory.cs
- XmlBaseReader.cs
- ArgIterator.cs
- EntityDataSourceUtil.cs
- TTSVoice.cs
- XmlAnyElementAttribute.cs
- BeginStoryboard.cs
- ReceiveDesigner.xaml.cs
- DescendantOverDescendantQuery.cs
- DataGridViewRowStateChangedEventArgs.cs
- EntitySqlException.cs
- ValueTable.cs
- DirectoryRootQuery.cs
- UIHelper.cs
- propertytag.cs
- Label.cs
- ExpandCollapsePattern.cs
- ModelItemImpl.cs
- ElementAction.cs
- RemoteWebConfigurationHostServer.cs
- CultureTableRecord.cs
- _UriSyntax.cs
- TypeElement.cs
- EditorPartChrome.cs
- _ConnectionGroup.cs
- ProgressChangedEventArgs.cs
- sortedlist.cs
- DeclarativeCatalogPart.cs
- FunctionImportElement.cs
- EndpointNotFoundException.cs
- MonikerSyntaxException.cs
- LogConverter.cs
- DefinitionUpdate.cs
- NativeCompoundFileAPIs.cs
- TabControl.cs
- SqlFactory.cs
- ConfigUtil.cs
- HtmlInputHidden.cs