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IPermission.Intersect Method

Creates and returns a permission that is the intersection of the current permission and the specified permission.

[Visual Basic]
Function Intersect( _
   ByVal target As IPermission _
) As IPermission
[C#]
IPermission Intersect(
   IPermission target
);
[C++]
IPermission* Intersect(
   IPermission* target
);
[JScript]
function Intersect(
   target : IPermission
) : IPermission;

Parameters

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

Return Value

A new permission that represents the intersection of the current permission and the specified permission. This new permission is a null reference (Nothing in Visual Basic) if the intersection is empty.

Exceptions

Exception Type Condition
ArgumentException The target parameter is not a null reference (Nothing in Visual Basic) and is not an instance of the same class as the current permission.

Remarks

The intersection of two permissions is a permission that describes the set of operations they both describe in common. Only a demand that passes both original permissions will pass the intersection.

The following statements are required to be true for all implementations of the Intersect method. X and Y represent IPermission object references that are not a null reference (Nothing in Visual Basic).

  • X.Intersect(X) returns a value equal to X.
  • X.Intersect(Y) returns the same value as Y.Intersect(X).
  • X.Intersect(a null reference (Nothing)) returns a null reference (Nothing).

Requirements

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

IPermission Interface | IPermission Members | System.Security Namespace

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