DnsPermission Class

Definition

Namespace:

System.Net

Assembly:

System.Security.Permissions.dll

Caution

Code Access Security is not supported or honored by the runtime.

Controls rights to access Domain Name System (DNS) servers on the network.

public ref class DnsPermission sealed : System::Security::CodeAccessPermission, System::Security::Permissions::IUnrestrictedPermission

[System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public sealed class DnsPermission : System.Security.CodeAccessPermission, System.Security.Permissions.IUnrestrictedPermission

[<System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
type DnsPermission = class
    inherit CodeAccessPermission
    interface IUnrestrictedPermission

Public NotInheritable Class DnsPermission
Inherits CodeAccessPermission
Implements IUnrestrictedPermission

Inheritance

Object

CodeAccessPermission

DnsPermission

Attributes

ObsoleteAttribute

Implements

IUnrestrictedPermission

Remarks

Caution

Code Access Security (CAS) has been deprecated across all versions of .NET Framework and .NET. Recent versions of .NET do not honor CAS annotations and produce errors if CAS-related APIs are used. Developers should seek alternative means of accomplishing security tasks.

The default permissions allow all local and Intranet zone applications to access DNS services, and no DNS permission for Internet zone applications.

Constructors

DnsPermission(PermissionState)

Creates a new instance of the DnsPermission class that either allows unrestricted DNS access or disallows DNS access.

Methods

Assert()	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 issues. (Inherited from CodeAccessPermission)
Copy()	Creates an identical copy of the current permission instance.
Demand()	Forces a SecurityException at run time if all callers higher in the call stack have not been granted the permission specified by the current instance. (Inherited from CodeAccessPermission)
Deny()	Obsolete. Prevents callers higher in the call stack from using the code that calls this method to access the resource specified by the current instance. (Inherited from CodeAccessPermission)
Equals(Object)	Determines whether the specified CodeAccessPermission object is equal to the current CodeAccessPermission. (Inherited from CodeAccessPermission)
FromXml(SecurityElement)	Reconstructs a DnsPermission instance from an XML encoding.
GetHashCode()	Gets a hash code for the CodeAccessPermission object that is suitable for use in hashing algorithms and data structures such as a hash table. (Inherited from CodeAccessPermission)
GetType()	Gets the Type of the current instance. (Inherited from Object)
Intersect(IPermission)	Creates a permission instance that is the intersection of the current permission instance and the specified permission instance.
IsSubsetOf(IPermission)	Determines whether the current permission instance is a subset of the specified permission instance.
IsUnrestricted()	Checks the overall permission state of the object.
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
PermitOnly()	Prevents callers higher in the call stack from using the code that calls this method to access all resources except for the resource specified by the current instance. (Inherited from CodeAccessPermission)
ToString()	Creates and returns a string representation of the current permission object. (Inherited from CodeAccessPermission)
ToXml()	Creates an XML encoding of a DnsPermission instance and its current state.
Union(IPermission)	Creates a permission instance that is the union of the current permission instance and the specified permission instance.

See also

• SecurityZone