RequiresContextItemAttribute Class
Indicates that the class relies on the specified context.
Inheritance Hierarchy
System.Object
System.Attribute
Microsoft.Windows.Design.RequirementAttribute
Microsoft.Windows.Design.RequiresContextItemAttribute
Namespace: Microsoft.Windows.Design
Assembly: Microsoft.Windows.Design.Extensibility (in Microsoft.Windows.Design.Extensibility.dll)
Syntax
'Declaration
<AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple := True)> _
Public NotInheritable Class RequiresContextItemAttribute _
Inherits RequirementAttribute
[AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple = true)]
public sealed class RequiresContextItemAttribute : RequirementAttribute
[AttributeUsageAttribute(AttributeTargets::Class, AllowMultiple = true)]
public ref class RequiresContextItemAttribute sealed : public RequirementAttribute
[<Sealed>]
[<AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple = true)>]
type RequiresContextItemAttribute =
class
inherit RequirementAttribute
end
public final class RequiresContextItemAttribute extends RequirementAttribute
The RequiresContextItemAttribute type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
.gif "Public method") |
RequiresContextItemAttribute | Initializes a new instance of the RequiresContextItemAttribute class. |
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Properties
| Name | Description | |
|---|---|---|
.gif "Public property") |
AllRequired | Gets a value indicating whether all requirement attributes of the same type are required. (Inherited from RequirementAttribute.) |
|
ContextItemType | Gets the context item type the class requires. |
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TypeId | Gets the type ID of this attribute. (Overrides Attribute.TypeId.) |
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Methods
| Name | Description | |
|---|---|---|
|
CreateSubscription | Creates an object that enables notification when the requirement specified by this attribute is fulfilled by the editing context. (Overrides RequirementAttribute.CreateSubscription(EditingContext).) |
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Equals | Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.) |
.gif "Protected method") |
Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
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GetHashCode | Returns the hash code for this instance. (Inherited from Attribute.) |
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GetType | Gets the Type of the current instance. (Inherited from Object.) |
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IsDefaultAttribute | When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.) |
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Match | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.) |
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MeetsRequirement | Indicates whether the editing context contains a context item of type ContextItemType. (Overrides RequirementAttribute.MeetsRequirement(EditingContext).) |
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MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
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ToString | Returns a string that represents the current object. (Inherited from Object.) |
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Explicit Interface Implementations
| Name | Description | |
|---|---|---|
.gif "Explicit interface implemetation") .gif "Private method") |
_Attribute.GetIDsOfNames | Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.) |
|
_Attribute.GetTypeInfo | Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.) |
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_Attribute.GetTypeInfoCount | Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.) |
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_Attribute.Invoke | Provides access to properties and methods exposed by an object. (Inherited from Attribute.) |
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Remarks
You can apply RequiresContextItemAttribute to any feature providers, any feature connectors, or select classes that are offered by feature providers. The class is not instantiated until all context items it requires are available.
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
See Also
Reference
Microsoft.Windows.Design Namespace
FeatureConnector<TFeatureProviderType>