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PermissionSet.Assert Method

Declares that the calling code can access the resource protected by a permission demand through the code that calls this method, even if callers higher in the stack have not been granted permission to access the resource. Using Assert can create security vulnerabilities.

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

public void Assert()

Implements

IStackWalk.Assert()

ExceptionCondition
SecurityException

The PermissionSet instance asserted has not been granted to the asserting code.

-or-

There is already an active Assert for the current frame.

This is the only way to assert multiple permissions at the same time within a frame because only one Assert can be active on a frame. Assert is only effective for granted permissions. Call the CodeAccessPermission.RevertAssert or CodeAccessPermission.RevertAll method to cancel an active Assert.

Caution noteCaution

Because calling the Assert method removes the requirement that all code in the call chain must be granted permission to access the specified resource, it can open up security vulnerabilities if used incorrectly or inappropriately. Therefore, it should be used with great caution.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.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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