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PermissionSet.IsSubsetOf Method

Determines whether the current PermissionSet is a subset of the specified PermissionSet.

Namespace:  System.Security
Assembly:  mscorlib (in mscorlib.dll)

public bool IsSubsetOf(
	PermissionSet target


Type: System.Security.PermissionSet
The permission set to test for the subset relationship. This must be either a PermissionSet or a NamedPermissionSet.

Return Value

Type: System.Boolean
true if the current PermissionSet is a subset of the target parameter; otherwise, false.

A PermissionSet is a subset of the target PermissionSet if all demands that succeed for the PermissionSet also succeed for the target. That is, the target contains at least the permissions contained in the subset.

The following code example shows the use of the IsSubsetOf method. This code example is part of a larger example provided for the PermissionSet class.

// Create a second permission set and compare it to the first permission set.
    new EnvironmentPermission(EnvironmentPermissionAccess.Read, "USERNAME"));
    new EnvironmentPermission(EnvironmentPermissionAccess.Write, "COMPUTERNAME"));
IEnumerator list =  ps1.GetEnumerator();
Console.WriteLine("Permissions in first permission set:");
while (list.MoveNext())
Console.WriteLine("Second permission IsSubsetOf first permission = " + ps2.IsSubsetOf(ps1));

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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