.NET Framework Class Library
OverloadGroupAttribute Class

Provides a method for indicating which combinations of arguments are valid in an activity.

Inheritance Hierarchy
SystemObject
   SystemAttribute
    System.ActivitiesOverloadGroupAttribute

Namespace:   System.Activities
Assembly:  System.Activities (in System.Activities.dll)
Syntax
<[%$TOPIC/dd465626_en-us_VS_110_2_0_0_0_0%]([%$TOPIC/dd465626_en-us_VS_110_2_0_0_0_1%].Property, AllowMultiple := True)> _
Public NotInheritable Class OverloadGroupAttribute _
	Inherits [%$TOPIC/dd465626_en-us_VS_110_2_0_0_0_2%]
[[%$TOPIC/dd465626_en-us_VS_110_2_0_1_0_0%]([%$TOPIC/dd465626_en-us_VS_110_2_0_1_0_1%].Property, AllowMultiple = true)]
public sealed class OverloadGroupAttribute : [%$TOPIC/dd465626_en-us_VS_110_2_0_1_0_2%]
[[%$TOPIC/dd465626_en-us_VS_110_2_0_2_0_0%]([%$TOPIC/dd465626_en-us_VS_110_2_0_2_0_1%]::Property, AllowMultiple = true)]
public ref class OverloadGroupAttribute sealed : public [%$TOPIC/dd465626_en-us_VS_110_2_0_2_0_2%]
[<[%$TOPIC/dd465626_en-us_VS_110_2_0_3_0_0%]>]
[<[%$TOPIC/dd465626_en-us_VS_110_2_0_3_0_1%]([%$TOPIC/dd465626_en-us_VS_110_2_0_3_0_2%].Property, AllowMultiple = true)>]
type OverloadGroupAttribute =  
    class 
        inherit [%$TOPIC/dd465626_en-us_VS_110_2_0_3_0_3%] 
    end
public final class OverloadGroupAttribute extends [%$TOPIC/dd465626_en-us_VS_110_2_0_4_0_0%]

The OverloadGroupAttribute type exposes the following members.

Constructors
  NameDescription
Public method OverloadGroupAttributeInitializes a new instance of the OverloadGroupAttribute class.
Public method OverloadGroupAttribute(String)Initializes a new instance of the OverloadGroupAttribute class.
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Properties
  NameDescription
Public property GroupNameGets the name of the OverloadGroupAttribute.
Public property TypeIdGets a unique identifier for this attribute. (Overrides AttributeTypeId.)
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Methods
  NameDescription
Public method EqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Public method GetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public method GetTypeGets the Type of the current instance. (Inherited from Object.)
Public method IsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public method MatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Public method ToStringReturns a string that represents the current object. (Inherited from Object.)
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Explicit Interface Implementations
  NameDescription
Explicit interface implemetation Private method _AttributeGetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeGetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeGetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeInvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
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Remarks

Arguments can be grouped together to form valid overload groups. An overload group cannot be a subset or an equivalent set of another overload group. The only exception to this rule is a subset that contains only arguments where IsRequired is false. Overload groups can overlap but it is an error if the intersection of the groups contains all the required arguments of one or both the overload groups.

An overload group is considered bound if all the IsRequired arguments in the group are bound. If a group has zero IsRequired arguments and at least one argument bound, then the group is considered bound. It is an error if none of the groups are bound unless one overload group has no IsRequired arguments in it. Binding IsRequired arguments from more than one overload group is not permitted. It is an error to have more than one overload group bound, that is, all required arguments in one overload group are bound and any argument in another overload group is also bound.

Any violation of the preceding rules results in a InvalidWorkflowException being thrown when the containing activity is prepared for execution.

The RuntimeArgumentIsRequired is set to true if the System.ActivitiesRequiredArgumentAttribute is applied to an argument.

Version Information

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4
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.