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NetworkInformationPermission.Intersect Method

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

Namespace:  System.Net.NetworkInformation
Assembly:  System (in System.dll)

public override IPermission Intersect(
	IPermission target


Type: System.Security.IPermission

An IPermission to intersect with the current permission. It must be of the same type as the current permission.

Return Value

Type: System.Security.IPermission
A NetworkInformationPermission that represents the intersection of the current permission and the specified permission. This new permission is null if the intersection is empty or target is null.



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

The following example creates a permission object that is the intersection of existing permission objects.

System.Net.NetworkInformation.NetworkInformationPermission unrestricted = 
    new System.Net.NetworkInformation.NetworkInformationPermission(

Console.WriteLine("Is unrestricted? " + unrestricted.IsUnrestricted());

System.Net.NetworkInformation.NetworkInformationPermission read = 
    new System.Net.NetworkInformation.NetworkInformationPermission(
System.Net.NetworkInformation.NetworkInformationPermission copyPermission =
   (System.Net.NetworkInformation.NetworkInformationPermission) read.Copy();
System.Net.NetworkInformation.NetworkInformationPermission unionPermission =
   (System.Net.NetworkInformation.NetworkInformationPermission) read.Union(unrestricted);
Console.WriteLine("Is subset?" + read.IsSubsetOf(unionPermission));
System.Net.NetworkInformation.NetworkInformationPermission intersectPermission =
   (System.Net.NetworkInformation.NetworkInformationPermission) read.Intersect(unrestricted);

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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