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AddInAttribute Class

Identifies an object as an add-in.

System.Object
  System.Attribute
    System.AddIn.AddInAttribute

Namespace:  System.AddIn
Assembly:  System.AddIn (in System.AddIn.dll)

[AttributeUsageAttribute(AttributeTargets.Class)]
public sealed class AddInAttribute : Attribute

The AddInAttribute type exposes the following members.

  NameDescription
Public methodAddInAttributeInitializes a new instance of the AddInAttribute class.
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  NameDescription
Public propertyDescriptionGets or sets the description of an add-in.
Public propertyNameGets the name of the add-In.
Public propertyPublisherGets or sets the publisher of the add-in.
Public propertyTypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
Public propertyVersionGets or sets the software version of the add-in.
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  NameDescription
Public methodEqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Public methodGetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodIsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public methodMatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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  NameDescription
Explicit interface implemetationPrivate method_Attribute.GetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.InvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
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The following methods, which maintain the store of information about available pipeline segments, use this attribute to identify an add-in.

This attribute is not required when an add-in is found exclusively by the FindAddIn method. The host has already identified the add-in by its type name and location, and therefore the attribute is not required for the add-in to be discovered.

This attribute should be used only on types that activate the segments of the pipeline. Types that represent objects passed between the host and the add-in do not need this attribute.

The following example identifies an add-in.

// This pipeline segment has 
// two attributes: 
// 1 - An AddInAttribute to identify 
//     this segment as an add-in. 
// 
// 2 - A QualificationDataAttribute to 
//     indicate that the add-in should 
//     be loaded into a new application domain.

    [AddIn("Calculator Add-in",Version="2.0.0.0")]
    [QualificationData("Isolation", "NewAppDomain")]
    public class SampleV2AddIn : Calculator2
    {

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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