Activates a class so that it is recognized as a Unit Test extension class.
Inheritance Hierarchy
Object
  Attribute
    Microsoft.VisualStudio.TestTools.UnitTesting.TestClassExtensionAttribute
      Microsoft.VisualStudio.TestTools.UITesting.CodedUITestAttribute
Namespace:  Microsoft.VisualStudio.TestTools.UnitTesting
Assembly:  Microsoft.VisualStudio.QualityTools.UnitTestFramework (in Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll)
Syntax
'Declaration
<SerializableAttribute> _
<AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple := False)> _
Public MustInherit Class TestClassExtensionAttribute _
    Inherits Attribute
[SerializableAttribute]
[AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple = false)]
public abstract class TestClassExtensionAttribute : Attribute
[SerializableAttribute]
[AttributeUsageAttribute(AttributeTargets::Class, AllowMultiple = false)]
public ref class TestClassExtensionAttribute abstract : public Attribute
[<AbstractClass>]
[<SerializableAttribute>]
[<AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple = false)>]
type TestClassExtensionAttribute =  
    class 
        inherit Attribute 
    end
public abstract class TestClassExtensionAttribute extends Attribute
The TestClassExtensionAttribute type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
| .gif) | TestClassExtensionAttribute | Initializes a new instance of the TestClassExtensionAttribute class. | 
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Properties
| Name | Description | |
|---|---|---|
| .gif) | ExtensionId | Gets the unique ID of the extension. | 
| .gif) | TypeId | When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.) | 
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Methods
| Name | Description | |
|---|---|---|
| .gif) | Equals | Determines whether the test class extension object is equal to the provided test class extension object. (Overrides Attribute.Equals(Object).) | 
| .gif) | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) | 
| .gif) | GetClientSide | Gets the TestTypeExtensionClientSide object. | 
| .gif) | GetExecution | Returns the TestExtensionExecution object. | 
| .gif) | GetHashCode | Returns the hash code for the ID of the test class extension object. (Overrides Attribute.GetHashCode.) | 
| .gif) | GetType | Gets the Type of the current instance. (Inherited from Object.) | 
| .gif) | 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.) | 
| .gif) | Match | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.) | 
| .gif) | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) | 
| .gif) | ToString | Returns a string that represents the current object. (Inherited from Object.) | 
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Explicit Interface Implementations
| Name | Description | |
|---|---|---|
| .gif) .gif) | System#Runtime#InteropServices#_Attribute#GetIDsOfNames | Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.) | 
| .gif) .gif) | System#Runtime#InteropServices#_Attribute#GetTypeInfo | Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.) | 
| .gif) .gif) | System#Runtime#InteropServices#_Attribute#GetTypeInfoCount | Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.) | 
| .gif) .gif) | System#Runtime#InteropServices#_Attribute#Invoke | Provides access to properties and methods exposed by an object. (Inherited from Attribute.) | 
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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.