Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / WinForms / Managed / System / WinForms / SelectionRangeConverter.cs / 1 / SelectionRangeConverter.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
/*
*/
namespace System.Windows.Forms {
using System.Runtime.Serialization.Formatters;
using System.Runtime.Remoting;
using System.Runtime.InteropServices;
using Microsoft.Win32;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Drawing;
using System.Diagnostics;
using System.Globalization;
using System.Reflection;
///
/// SelectionRangeConverter is a class that can be used to convert
/// SelectionRange objects from one data type to another. Access this
/// class through the TypeDescriptor.
///
public class SelectionRangeConverter : TypeConverter {
///
/// 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) || sourceType == typeof(DateTime)) {
return true;
}
return base.CanConvertFrom(context, sourceType);
}
///
/// Gets a value indicating whether this converter can
/// convert an object to the given destination type using the context.
///
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) {
if (destinationType == typeof(InstanceDescriptor) || destinationType == typeof(DateTime)) {
return true;
}
return base.CanConvertTo(context, destinationType);
}
///
/// Converts the given object to the converter's native type.
///
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) {
if (value is string) {
string text = ((string)value).Trim();
if (text.Length == 0) {
return new SelectionRange(DateTime.Now.Date, DateTime.Now.Date);
}
// Separate the string into the two dates, and parse each one
//
if (culture == null) {
culture = CultureInfo.CurrentCulture;
}
char separator = culture.TextInfo.ListSeparator[0];
string[] tokens = text.Split(new char[] {separator});
if (tokens.Length == 2) {
TypeConverter dateTimeConverter = TypeDescriptor.GetConverter(typeof(DateTime));
DateTime start = (DateTime)dateTimeConverter.ConvertFromString(context, culture, tokens[0]);
DateTime end = (DateTime)dateTimeConverter.ConvertFromString(context, culture, tokens[1]);
return new SelectionRange(start, end);
}
else {
throw new ArgumentException(SR.GetString(SR.TextParseFailedFormat,
text,
"Start" + separator + " End"));
}
}
else if (value is DateTime) {
DateTime dt = (DateTime)value;
return new SelectionRange(dt, dt);
}
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");
}
SelectionRange range = value as SelectionRange;
if (range != null) {
if (destinationType == typeof(string)) {
if (culture == null) {
culture = CultureInfo.CurrentCulture;
}
string sep = culture.TextInfo.ListSeparator + " ";
PropertyDescriptorCollection props = GetProperties(value);
string[] args = new string[props.Count];
for (int i = 0; i < props.Count; i++) {
object propValue = props[i].GetValue(value);
args[i] = TypeDescriptor.GetConverter(propValue).ConvertToString(context, culture, propValue);
}
return string.Join(sep, args);
}
if (destinationType == typeof(DateTime)) {
return range.Start;
}
if (destinationType == typeof(InstanceDescriptor)) {
ConstructorInfo ctor = typeof(SelectionRange).GetConstructor(new Type[] {
typeof(DateTime), typeof(DateTime)});
if (ctor != null) {
return new InstanceDescriptor(ctor, new object[] {range.Start, range.End});
}
}
}
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.
///
public override object CreateInstance(ITypeDescriptorContext context, IDictionary propertyValues) {
try
{
return new SelectionRange((DateTime)propertyValues["Start"],
(DateTime)propertyValues["End"]);
}
catch (InvalidCastException invalidCast)
{
throw new ArgumentException(SR.GetString(SR.PropertyValueInvalidEntry), invalidCast);
}
catch (NullReferenceException nullRef)
{
throw new ArgumentException(SR.GetString(SR.PropertyValueInvalidEntry), nullRef);
}
}
///
/// 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;
}
///
/// Retrieves the set of properties for this type. By default, a type has
/// does not return any properties. An easy implementation of this method
/// can just call TypeDescriptor.GetProperties for the correct data type.
///
public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes) {
PropertyDescriptorCollection props = TypeDescriptor.GetProperties(typeof(SelectionRange), attributes);
return props.Sort(new string[] {"Start", "End"});
}
///
/// Determines if this object supports properties. By default, this
/// is false.
///
public override bool GetPropertiesSupported(ITypeDescriptorContext context) {
return true;
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
/*
*/
namespace System.Windows.Forms {
using System.Runtime.Serialization.Formatters;
using System.Runtime.Remoting;
using System.Runtime.InteropServices;
using Microsoft.Win32;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Drawing;
using System.Diagnostics;
using System.Globalization;
using System.Reflection;
///
/// SelectionRangeConverter is a class that can be used to convert
/// SelectionRange objects from one data type to another. Access this
/// class through the TypeDescriptor.
///
public class SelectionRangeConverter : TypeConverter {
///
/// 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) || sourceType == typeof(DateTime)) {
return true;
}
return base.CanConvertFrom(context, sourceType);
}
///
/// Gets a value indicating whether this converter can
/// convert an object to the given destination type using the context.
///
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) {
if (destinationType == typeof(InstanceDescriptor) || destinationType == typeof(DateTime)) {
return true;
}
return base.CanConvertTo(context, destinationType);
}
///
/// Converts the given object to the converter's native type.
///
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) {
if (value is string) {
string text = ((string)value).Trim();
if (text.Length == 0) {
return new SelectionRange(DateTime.Now.Date, DateTime.Now.Date);
}
// Separate the string into the two dates, and parse each one
//
if (culture == null) {
culture = CultureInfo.CurrentCulture;
}
char separator = culture.TextInfo.ListSeparator[0];
string[] tokens = text.Split(new char[] {separator});
if (tokens.Length == 2) {
TypeConverter dateTimeConverter = TypeDescriptor.GetConverter(typeof(DateTime));
DateTime start = (DateTime)dateTimeConverter.ConvertFromString(context, culture, tokens[0]);
DateTime end = (DateTime)dateTimeConverter.ConvertFromString(context, culture, tokens[1]);
return new SelectionRange(start, end);
}
else {
throw new ArgumentException(SR.GetString(SR.TextParseFailedFormat,
text,
"Start" + separator + " End"));
}
}
else if (value is DateTime) {
DateTime dt = (DateTime)value;
return new SelectionRange(dt, dt);
}
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");
}
SelectionRange range = value as SelectionRange;
if (range != null) {
if (destinationType == typeof(string)) {
if (culture == null) {
culture = CultureInfo.CurrentCulture;
}
string sep = culture.TextInfo.ListSeparator + " ";
PropertyDescriptorCollection props = GetProperties(value);
string[] args = new string[props.Count];
for (int i = 0; i < props.Count; i++) {
object propValue = props[i].GetValue(value);
args[i] = TypeDescriptor.GetConverter(propValue).ConvertToString(context, culture, propValue);
}
return string.Join(sep, args);
}
if (destinationType == typeof(DateTime)) {
return range.Start;
}
if (destinationType == typeof(InstanceDescriptor)) {
ConstructorInfo ctor = typeof(SelectionRange).GetConstructor(new Type[] {
typeof(DateTime), typeof(DateTime)});
if (ctor != null) {
return new InstanceDescriptor(ctor, new object[] {range.Start, range.End});
}
}
}
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.
///
public override object CreateInstance(ITypeDescriptorContext context, IDictionary propertyValues) {
try
{
return new SelectionRange((DateTime)propertyValues["Start"],
(DateTime)propertyValues["End"]);
}
catch (InvalidCastException invalidCast)
{
throw new ArgumentException(SR.GetString(SR.PropertyValueInvalidEntry), invalidCast);
}
catch (NullReferenceException nullRef)
{
throw new ArgumentException(SR.GetString(SR.PropertyValueInvalidEntry), nullRef);
}
}
///
/// 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;
}
///
/// Retrieves the set of properties for this type. By default, a type has
/// does not return any properties. An easy implementation of this method
/// can just call TypeDescriptor.GetProperties for the correct data type.
///
public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes) {
PropertyDescriptorCollection props = TypeDescriptor.GetProperties(typeof(SelectionRange), attributes);
return props.Sort(new string[] {"Start", "End"});
}
///
/// Determines if this object supports properties. By default, this
/// is false.
///
public override bool GetPropertiesSupported(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
- SQLInt32Storage.cs
- ThaiBuddhistCalendar.cs
- ToolBarButtonDesigner.cs
- NegotiateStream.cs
- SafeFileMappingHandle.cs
- BindingExpressionBase.cs
- MissingMemberException.cs
- SizeFConverter.cs
- SqlDataRecord.cs
- DeclarationUpdate.cs
- AmbientLight.cs
- InvalidComObjectException.cs
- SourceChangedEventArgs.cs
- UserControlParser.cs
- WindowsContainer.cs
- PriorityBinding.cs
- SQLBytesStorage.cs
- CacheEntry.cs
- SamlAuthorizationDecisionStatement.cs
- AddInAttribute.cs
- Label.cs
- QuaternionValueSerializer.cs
- XmlSiteMapProvider.cs
- SqlProviderManifest.cs
- ThicknessAnimationBase.cs
- KeyGesture.cs
- DbExpressionRules.cs
- PostBackOptions.cs
- EventDescriptorCollection.cs
- DbCommandTree.cs
- DefaultValueAttribute.cs
- Geometry3D.cs
- ImageCodecInfo.cs
- DbConnectionClosed.cs
- BitmapImage.cs
- InstanceData.cs
- EventsTab.cs
- TextServicesLoader.cs
- FixedSOMGroup.cs
- CollectionDataContract.cs
- SafeFileMapViewHandle.cs
- ProcessModelInfo.cs
- TextServicesManager.cs
- AnchoredBlock.cs
- EncoderReplacementFallback.cs
- ComponentConverter.cs
- FormViewPagerRow.cs
- SafeHandles.cs
- ResourceDictionary.cs
- DefaultMemberAttribute.cs
- PackageProperties.cs
- ApplicationManager.cs
- ListViewDeleteEventArgs.cs
- GlobalizationAssembly.cs
- LabelInfo.cs
- COM2ColorConverter.cs
- IssuedTokenClientElement.cs
- FactoryMaker.cs
- ServiceDesigner.cs
- HwndSubclass.cs
- Stack.cs
- SignedInfo.cs
- LoginUtil.cs
- SectionXmlInfo.cs
- ErrorLog.cs
- PresentationSource.cs
- AdPostCacheSubstitution.cs
- XPathException.cs
- WindowsAuthenticationEventArgs.cs
- Operators.cs
- UnmanagedMarshal.cs
- MetadataArtifactLoader.cs
- FontWeights.cs
- SqlPersonalizationProvider.cs
- documentsequencetextcontainer.cs
- CornerRadiusConverter.cs
- RepeatButton.cs
- DesignTimeTemplateParser.cs
- HtmlFormParameterReader.cs
- Pair.cs
- RuntimeResourceSet.cs
- SaveFileDialog.cs
- LoginUtil.cs
- ListViewDeleteEventArgs.cs
- StringFunctions.cs
- SeekableReadStream.cs
- SchemaNotation.cs
- PeerEndPoint.cs
- WmfPlaceableFileHeader.cs
- DBParameter.cs
- PropertyPushdownHelper.cs
- LZCodec.cs
- StateBag.cs
- GradientStop.cs
- RadioButtonPopupAdapter.cs
- TextBox.cs
- DataGridPagerStyle.cs
- SslStream.cs
- GlobalEventManager.cs
- OLEDB_Enum.cs