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System.ComponentModel Namespace

The System.ComponentModel namespace provides classes that are used to implement the run-time and design-time behavior of components and controls. This namespace includes the base classes and interfaces for implementing attributes and type converters, binding to data sources, and licensing components.

The classes in this namespace divide into the following categories:

Namespace hierarchy

Classes

Class Description
AmbientValueAttribute Specifies the value to pass to a property to cause the property to get its value from another source. This is known as ambience. This class cannot be inherited.
ArrayConverter Provides a type converter to convert Array objects to and from various other representations.
AttributeCollection Represents a collection of attributes.
BaseNumberConverter Provides a base type converter for nonfloating point numerical types.
BindableAttribute Specifies whether a property is typically used for binding.
BooleanConverter Provides a type converter to convert Boolean objects to and from various other representations.
BrowsableAttribute Specifies whether a property or event should be displayed in a Properties window.
ByteConverter Provides a type converter to convert 8-bit unsigned integer objects to and from various other representations.
CancelEventArgs Provides data for a cancelable event.
CategoryAttribute Specifies the name of the category in which to group the property or event when displayed in a System.Windows.Forms.PropertyGrid control set to Categorized mode.
CharConverter Provides a type converter to convert Unicode character objects to and from various other representations.
CollectionChangeEventArgs Provides data for the CollectionChanged event.
CollectionConverter Provides a type converter to convert collection objects to and from various other representations.
Component Provides the base implementation for the IComponent interface and enables object-sharing between applications.
ComponentCollection Provides a read-only container for a collection of IComponent objects.
ComponentConverter Provides a type converter to convert components to and from various other representations.
ComponentEditor Provides the base class for a custom component editor.
ComponentResourceManager The ComponentResourceManager class is a ResourceManager object that provides simple functionality for enumerating resources for a component or object.
Container Encapsulates zero or more components.
CultureInfoConverter Provides a type converter to convert CultureInfo objects to and from various other representations.
DateTimeConverter Provides a type converter to convert DateTime objects to and from various other representations.
DecimalConverter Provides a type converter to convert Decimal objects to and from various other representations.
DefaultEventAttribute Specifies the default event for a component.
DefaultPropertyAttribute Specifies the default property for a component.
DefaultValueAttribute Specifies the default value for a property.
DescriptionAttribute Specifies a description for a property or event.
DesignerAttribute Specifies the class used to implement design-time services for a component.
DesignerCategoryAttribute Specifies that the designer for a class belongs to a certain category.
DesignerSerializationVisibilityAttribute Specifies the type of persistence to use when serializing a property on a component at design time.
DesignOnlyAttribute Specifies whether a property can only be set at design time.
DesignTimeVisibleAttribute DesignTimeVisibleAttribute marks a component's visibility. If DesignTimeVisibleAttribute.Yes is present, a visual designer can show this component on a designer.
DoubleConverter Provides a type converter to convert double-precision, floating point number objects to and from various other representations.
EditorAttribute Specifies the editor to use to change a property. This class cannot be inherited.
EditorBrowsableAttribute Specifies that a property or method is viewable in an editor. This class cannot be inherited.
EnumConverter Provides a type converter to convert Enum objects to and from various other representations.
EventDescriptor Provides information about an event.
EventDescriptorCollection Represents a collection of EventDescriptor objects.
EventHandlerList Provides a simple list of delegates. This class cannot be inherited.
ExpandableObjectConverter Provides a type converter to convert expandable objects to and from various other representations.
GuidConverter Provides a type converter to convert Guid objects to and from various other representations.
ImmutableObjectAttribute Specifies that an object has no subproperties capable of being edited.
InheritanceAttribute Indicates whether the component associated with this attribute has been inherited from a base class. This class cannot be inherited.
InstallerTypeAttribute Specifies the installer for a type that installs components.
Int16Converter Provides a type converter to convert 16-bit signed integer objects to and from other representations.
Int32Converter Provides a type converter to convert 32-bit signed integer objects to and from other representations.
Int64Converter Provides a type converter to convert 64-bit signed integer objects to and from various other representations.
InvalidEnumArgumentException The exception thrown when using invalid arguments that are enumerators.
License Provides the abstract (MustInherit in Visual Basic) base class for all licenses. A license is granted to a specific instance of a component.
LicenseContext Specifies when you can use a licensed object and provides a way of obtaining additional services needed to support licenses running within its domain.
LicenseException Represents the exception thrown when a component cannot be granted a license.
LicenseManager Provides properties and methods to add a license to a component and to manage a LicenseProvider. This class cannot be inherited.
LicenseProvider Provides the abstract (MustInherit in Visual Basic) base class for implementing a license provider.
LicenseProviderAttribute Specifies the LicenseProvider to use with a class.
LicFileLicenseProvider Provides an implementation of a LicenseProvider. The provider works in a similar fashion to the Microsoft .NET Framework standard licensing module.
ListBindableAttribute Specifies that a list can be used as a data source. A visual designer should use this attribute to determine whether to display a particular list in a data-binding picker. This class cannot be inherited.
ListChangedEventArgs Provides data for the ListChanged event.
LocalizableAttribute Specifies whether a property should be localized.
MarshalByValueComponent Implements IComponent and provides the base implementation for remotable components that are marshaled by value (a copy of the serialized object is passed).
MemberDescriptor An abstract base class that represents a class member, such as a property, or event.
MergablePropertyAttribute Specifies that this property can be combined with properties belonging to other objects in a Properties window.
NotifyParentPropertyAttribute Indicates that the parent property is notified when the value of the property that this attribute is applied to is modified. This class cannot be inherited.
ParenthesizePropertyNameAttribute Indicates whether the name of the associated property is displayed with parentheses in the Properties window. This class cannot be inherited.
PropertyChangedEventArgs Provides data for the PropertyChanged event.
PropertyDescriptor Provides an abstraction of a property on a class.
PropertyDescriptorCollection Represents a collection of PropertyDescriptor objects.
PropertyTabAttribute Identifies the property tab or tabs to display for the specified class or classes.
ProvidePropertyAttribute Specifies the name of the property that an implementor of IExtenderProvider offers to other components.
ReadOnlyAttribute Specifies whether the property this attribute is bound to is read-only or read/write at design time.
RecommendedAsConfigurableAttribute Specifies that the property can be used as an application setting.
ReferenceConverter Provides a type converter to convert object references to and from other representations.
RefreshEventArgs Provides data for the Refreshed event.
RefreshPropertiesAttribute Indicates how a designer refreshes when the associated property value changes. This class cannot be inherited.
RunInstallerAttribute Specifies whether the Visual Studio .NET Custom Action Installer or the Installer Tool (Installutil.exe) should be invoked when the assembly is installed.
SByteConverter Provides a type converter to convert 8-bit unsigned integer objects to and from a string.
SingleConverter Provides a type converter to convert single-precision, floating point number objects to and from various other representations.
StringConverter Provides a type converter to convert string objects to and from other representations.
TimeSpanConverter Provides a type converter to convert TimeSpan objects to and from other representations.
ToolboxItemAttribute Represents an attribute of a toolbox item.
ToolboxItemFilterAttribute Specifies the filter string and filter type to use for a toolbox item.
TypeConverter Provides a unified way of converting types of values to other types, as well as for accessing standard values and subproperties.
TypeConverter.
SimplePropertyDescriptor
Represents an abstract (MustInherit in Visual Basic) class that provides properties for objects that do not have properties.
TypeConverter.
StandardValuesCollection
Represents a collection of values.
TypeConverterAttribute Specifies what type to use as a converter for the object this attribute is bound to. This class cannot be inherited.
TypeDescriptor Provides information about the properties and events for a component. This class cannot be inherited.
TypeListConverter Provides a type converter that can be used to populate a list box with available types.
UInt16Converter Provides a type converter to convert 16-bit unsigned integer objects to and from other representations.
UInt32Converter Provides a type converter to convert 32-bit unsigned integer objects to and from various other representations.
UInt64Converter Provides a type converter to convert 64-bit unsigned integer objects to and from other representations.
WarningException Specifies an exception that is handled as a warning instead of an error.
Win32Exception The exception that is thrown for a Win32 error code.

Interfaces

Interface Description
IBindingList Provides the features required to support both complex and simple scenarios when binding to a data source.
IComponent Provides functionality required by all components. Component is the default implementation of IComponent and serves as the base class for all components in the common language runtime.
IContainer Provides functionality for containers. Containers are objects that logically contain zero or more components.
ICustomTypeDescriptor Provides an interface that supplies custom type information for an object.
IDataErrorInfo Provides the functionality to offer custom error information that a user interface can bind to.
IEditableObject Provides functionality to commit or rollback changes to an object that is used as a data source.
IExtenderProvider Defines the interface for extending properties to other components in a container.
IListSource Provides functionality to an object to return a list that can be bound to a data source.
ISite Provides functionality required by sites.
ISupportInitialize Specifies that this object supports a simple, transacted notification for batch initialization.
ISynchronizeInvoke Provides a way to synchronously or asynchronously execute a delegate.
ITypeDescriptorContext Provides information about the context information of a component, for example, the container that it is in and its PropertyDescriptor. The primary use of this interface is in type conversion.
ITypedList Provides functionality to discover the schema for a bindable list, where the properties available for binding differ from the public properties of the object to bind to. For instance, using a DataView object that represents a customer table, you want to bind to the properties on the customer object that the DataView represents, not the properties of the DataView.

Delegates

Delegate Description
CancelEventHandler Represents the method that handles a cancellable event.
CollectionChangeEventHandler Represents the method that handles the CollectionChanged event raised when adding elements to or removing elements from a collection.
ListChangedEventHandler Represents the method that will handle the ListChanged event of the IBindingList class.
PropertyChangedEventHandler Represents the method that will handle the PropertyChanged event raised when a property is changed on a component.
RefreshEventHandler Represents the method that handles the Refreshed event raised when a Type or component is changed during design time.

Enumerations

Enumeration Description
BindableSupport Specifies values to indicate whether a property can be bound to a data element or another property.
CollectionChangeAction Specifies how the collection is changed.
DesignerSerializationVisibility Specifies the visibility a property has to the design-time serializer.
EditorBrowsableState Specifies the browsable state of a property or method from within an editor.
InheritanceLevel Defines identifiers for types of inheritance levels.
LicenseUsageMode Specifies when the License can be used.
ListChangedType Specifies how the list changed.
ListSortDirection Specifies the direction of a sort operation.
PropertyTabScope Defines identifiers that indicate the persistence scope of a tab in the Properties window.
RefreshProperties Defines identifiers that indicate the type of a refresh of the Properties window.
ToolboxItemFilterType Defines identifiers used to indicate the type of filter that a ToolboxItemFilterAttribute uses.

See Also

.NET Framework Class Library

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