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ObjectSecurity.ModifyAccessRule Method

Applies the specified modification to the Discretionary Access Control List (DACL) associated with this ObjectSecurity object.

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

public virtual bool ModifyAccessRule(
	AccessControlModification modification,
	AccessRule rule,
	out bool modified


Type: System.Security.AccessControl.AccessControlModification
The modification to apply to the DACL.
Type: System.Security.AccessControl.AccessRule
The access rule to modify.
Type: System.Boolean%
true if the DACL is successfully modified; otherwise, false.

Return Value

Type: System.Boolean
true if the DACL is successfully modified; otherwise, false.

To avoid unintentionally allowing access to principals, applications should check for the existence of an allow everyone full access (AEFA) access control entry (ACE) and remove it before modifying a DACL.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.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.