System.ComponentModel

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:

Core component classes. See the Component, IComponent, Container, and IContainer classes.
Component licensing. See the License, LicenseManager, LicenseProvider, and LicenseProviderAttribute classes.
Attributes. See the Attribute class.
Descriptors and persistence. See the TypeDescriptor, EventDescriptor, and PropertyDescriptor classes.
Type converters. See the TypeConverter class.

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 category in which the property or event will be displayed in a visual designer.
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	Specifies a collection of Component objects in the Container.
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.

System.ComponentModel Namespace

Classes

Interfaces

Delegates

Enumerations

See Also