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ParamArrayAttribute Class

Indicates that the method will allow a variable number of arguments in its invocation. This class cannot be inherited.

For a list of all members of this type, see ParamArrayAttribute Members.


[Visual Basic]
NotInheritable Public Class ParamArrayAttribute
   Inherits Attribute
public sealed class ParamArrayAttribute : Attribute
public __gc __sealed class ParamArrayAttribute : public Attribute
class ParamArrayAttribute extends Attribute

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.


A parameter array allows the specification of an unknown number of arguments. A parameter array must be the last parameter in a formal parameter list, and it must be a single-dimension array. A parameter array permits arguments to a method to be specified in two ways:

  • A single expression of a type that is implicitly convertible to the parameter array type. The parameter array functions as a value parameter.
  • Zero or more arguments where each argument is an expression of a type that is implictly convertible to the type of the parameter array element.

For more information about using attributes, see Extending Metadata Using Attributes.


Namespace: System

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

Assembly: Mscorlib (in Mscorlib.dll)

See Also

ParamArrayAttribute Members | System Namespace | Attribute | Extending Metadata Using Attributes