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CodeAccessPermission.Union Method

When overridden in a derived class, creates a permission that is the union of the current permission and the specified permission.

[Visual Basic]
Public Overridable Function Union( _
   ByVal other As IPermission _
) As IPermission Implements IPermission.Union
public virtual IPermission Union(
 IPermission other
public: virtual IPermission* Union(
 IPermission* other
public function Union(
   other : IPermission
) : IPermission;


A permission to combine with the current permission. It must be of the same type as the current permission.

Return Value

A new permission that represents the union of the current permission and the specified permission.




Exception Type Condition
NotSupportedException The other parameter is not a null reference (Nothing in Visual Basic). This method is only supported at this level when passed a null reference (Nothing).


The result of a call to Union is a permission that represents all the operations represented by both the current permission and the specified permission. Any demand that passes either permission passes their union.

Notes to Inheritors:  You must implement this method in a derived class.


Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Common Language Infrastructure (CLI) Standard

See Also

CodeAccessPermission Class | CodeAccessPermission Members | System.Security Namespace