ResourcePermissionBase Class
Allows control of code access security permissions.
For a list of all members of this type, see ResourcePermissionBase Members.
System.Object
System.Security.CodeAccessPermission
System.Security.Permissions.ResourcePermissionBase
System.Diagnostics.EventLogPermission
System.Diagnostics.PerformanceCounterPermission
System.DirectoryServices.DirectoryServicesPermission
System.ServiceProcess.ServiceControllerPermission
[Visual Basic] <Serializable> MustInherit Public Class ResourcePermissionBase Inherits CodeAccessPermission Implements IUnrestrictedPermission [C#] [Serializable] public abstract class ResourcePermissionBase : CodeAccessPermission, IUnrestrictedPermission [C++] [Serializable] public __gc __abstract class ResourcePermissionBase : public CodeAccessPermission, IUnrestrictedPermission [JScript] public Serializable abstract class ResourcePermissionBase extends CodeAccessPermission implements IUnrestrictedPermission
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Remarks
Notes to Inheritors: When you inherit from ResourcePermissionBase, you must provide at least three constructors, set two properties, and provide a third property. The required constructors are: a default constructor, one that takes a PermissionState as a parameter, and as many as needed that take values for the properties. The properties that need to be set are PermissionAccessType and TagNames. The third property that is needed is one that returns the permission entries. For an example of an implementation of this class, see PerformanceCounterPermission. In PerformanceCounterPermission, the TagNames property is set privately to "Machine" and "Category", the PermissionAccessType property is privately set to the type of PerformanceCounterPermissionAccess, and the PermissionEntries property returns the permission entries.
Example
[Visual Basic, C#, C++] The following example inherits from the ResourcePermissionBase class. 4 kinds of constructors are implemented. The example also provides an implementation of a class called MailslotPermissionEntry. The PermissionAccessType property is then privately set to the type of MailslotPermissionEntry. The TagNames property is set privately to "Name" and "Machine".
[Visual Basic] Imports System Imports System.Security.Permissions Imports System.Collections <Serializable()> Public Class MailslotPermission Inherits ResourcePermissionBase Private innerCollection As ArrayList Public Sub New() SetNames() End Sub 'New Public Sub New(ByVal state As PermissionState) MyBase.New(state) SetNames() End Sub 'New Public Sub New(ByVal permissionAccess As MailslotPermissionAccess, ByVal name As String, ByVal machineName1 As String) SetNames() Me.AddPermissionAccess(New MailslotPermissionEntry(permissionAccess, name, machineName1)) End Sub 'New Public Sub New(ByVal permissionAccessEntries() As MailslotPermissionEntry) SetNames() If permissionAccessEntries Is Nothing Then Throw New ArgumentNullException("permissionAccessEntries") End If Dim index As Integer While index < permissionAccessEntries.Length Me.AddPermissionAccess(permissionAccessEntries(index)) End While End Sub 'New Public ReadOnly Property PermissionEntries() As ArrayList Get If Me.innerCollection Is Nothing Then Me.innerCollection = New ArrayList() End If Me.innerCollection.InsertRange(0, MyBase.GetPermissionEntries()) Return Me.innerCollection End Get End Property Friend Overloads Sub AddPermissionAccess(ByVal entry As MailslotPermissionEntry) MyBase.AddPermissionAccess(entry.GetBaseEntry()) End Sub 'AddPermissionAccess Friend Shadows Sub Clear() MyBase.Clear() End Sub 'Clear Friend Overloads Sub RemovePermissionAccess(ByVal entry As MailslotPermissionEntry) MyBase.RemovePermissionAccess(entry.GetBaseEntry()) End Sub 'RemovePermissionAccess Private Sub SetNames() Me.PermissionAccessType = GetType(MailslotPermissionAccess) Me.TagNames = New String() {"Name", "Machine"} End Sub 'SetNames End Class 'MailslotPermission <Flags()> Public Enum MailslotPermissionAccess None = 0 Send = 2 Receive = 4 Or Send End Enum 'MailslotPermissionAccess <Serializable()> Public Class MailslotPermissionEntry Private nameVar As String Private machineNameVar As String Private permissionAccessVar As MailslotPermissionAccess Public Sub New(ByVal permissionAccess As MailslotPermissionAccess, ByVal name As String, ByVal machineName1 As String) Me.permissionAccessVar = permissionAccess Me.nameVar = name Me.machineNameVar = machineName1 End Sub 'New Friend Sub New(ByVal baseEntry As ResourcePermissionBaseEntry) Me.permissionAccessVar = CType(baseEntry.PermissionAccess, MailslotPermissionAccess) Me.nameVar = baseEntry.PermissionAccessPath(0) Me.machineNameVar = baseEntry.PermissionAccessPath(1) End Sub 'New Public ReadOnly Property Name() As String Get Return Me.nameVar End Get End Property Public ReadOnly Property MachineName() As String Get Return Me.machineNameVar End Get End Property Public ReadOnly Property PermissionAccess() As MailslotPermissionAccess Get Return Me.permissionAccessVar End Get End Property Friend Function GetBaseEntry() As ResourcePermissionBaseEntry Dim baseEntry As New ResourcePermissionBaseEntry(CInt(Me.PermissionAccess), New String() {Me.Name, Me.MachineName}) Return baseEntry End Function 'GetBaseEntry End Class 'MailslotPermissionEntry [C#] using System; using System.Security.Permissions; using System.Collections; [Serializable()] public class MailslotPermission: ResourcePermissionBase { private ArrayList innerCollection; public MailslotPermission() { SetNames(); } public MailslotPermission(PermissionState state):base(state) { SetNames(); } public MailslotPermission(MailslotPermissionAccess permissionAccess, string name, string machineName) { SetNames(); this.AddPermissionAccess(new MailslotPermissionEntry(permissionAccess, name, machineName)); } public MailslotPermission(MailslotPermissionEntry[] permissionAccessEntries) { SetNames(); if (permissionAccessEntries == null) throw new ArgumentNullException("permissionAccessEntries"); for (int index = 0; index < permissionAccessEntries.Length; ++index) this.AddPermissionAccess(permissionAccessEntries[index]); } public ArrayList PermissionEntries { get { if (this.innerCollection == null) this.innerCollection = new ArrayList(); this.innerCollection.InsertRange(0,base.GetPermissionEntries()); return this.innerCollection; } } internal void AddPermissionAccess(MailslotPermissionEntry entry) { base.AddPermissionAccess(entry.GetBaseEntry()); } internal new void Clear() { base.Clear(); } internal void RemovePermissionAccess(MailslotPermissionEntry entry) { base.RemovePermissionAccess(entry.GetBaseEntry()); } private void SetNames() { this.PermissionAccessType = typeof(MailslotPermissionAccess); this.TagNames = new string[]{"Name","Machine"}; } } [Flags] public enum MailslotPermissionAccess { None = 0, Send = 1 << 1, Receive = 1 << 2 | Send, } [Serializable()] public class MailslotPermissionEntry { private string name; private string machineName; private MailslotPermissionAccess permissionAccess; public MailslotPermissionEntry(MailslotPermissionAccess permissionAccess, string name, string machineName) { this.permissionAccess = permissionAccess; this.name = name; this.machineName = machineName; } internal MailslotPermissionEntry(ResourcePermissionBaseEntry baseEntry) { this.permissionAccess = (MailslotPermissionAccess)baseEntry.PermissionAccess; this.name = baseEntry.PermissionAccessPath[0]; this.machineName = baseEntry.PermissionAccessPath[1]; } public string Name { get { return this.name; } } public string MachineName { get { return this.machineName; } } public MailslotPermissionAccess PermissionAccess { get { return this.permissionAccess; } } internal ResourcePermissionBaseEntry GetBaseEntry() { ResourcePermissionBaseEntry baseEntry = new ResourcePermissionBaseEntry((int)this.PermissionAccess, new string[] {this.Name,this.MachineName}); return baseEntry; } } [C++] #using <mscorlib.dll> #using <System.dll> using namespace System; using namespace System::Security::Permissions; using namespace System::Collections; [Flags] public __value enum MailslotPermissionAccess { None = 0, Send = 1 << 1, Receive = 1 << 2 | Send, }; [Serializable] public __gc class MailslotPermissionEntry { private: String* name; String* machineName; MailslotPermissionAccess permissionAccess; public private: MailslotPermissionEntry(ResourcePermissionBaseEntry* baseEntry) { this->permissionAccess = (MailslotPermissionAccess)baseEntry->PermissionAccess; this->name = baseEntry->PermissionAccessPath->Item[0]->ToString(); this->machineName = baseEntry->PermissionAccessPath->Item[1]->ToString(); } ResourcePermissionBaseEntry* GetBaseEntry() { String* newStrings[] = {this->Name, this->MachineName}; ResourcePermissionBaseEntry* baseEntry = new ResourcePermissionBaseEntry((int)(this->PermissionAccess), newStrings); return baseEntry; } public: MailslotPermissionEntry(MailslotPermissionAccess permissionAccess, String* name, String* machineName) { this->permissionAccess = permissionAccess; this->name = name; this->machineName = machineName; } __property String* get_Name() { return this->name; } __property String* get_MachineName() { return this->machineName; } __property MailslotPermissionAccess get_PermissionAccess() { return this->permissionAccess; } }; [Serializable] public __gc class MailslotPermission : public ResourcePermissionBase { private: ArrayList* innerCollection; void SetNames() { this->PermissionAccessType = __typeof(MailslotPermissionAccess); String* newStrings[] = {S"Name", S"Machine"}; this->TagNames = newStrings; } public private: void AddPermissionAccess(MailslotPermissionEntry* entry) { ResourcePermissionBase::AddPermissionAccess(entry->GetBaseEntry()); } void Clear() { ResourcePermissionBase::Clear(); } void RemovePermissionAccess(MailslotPermissionEntry* entry) { ResourcePermissionBase::RemovePermissionAccess(entry->GetBaseEntry()); } public: MailslotPermission() { SetNames(); } MailslotPermission(PermissionState state) : ResourcePermissionBase(state) { SetNames(); } MailslotPermission(MailslotPermissionAccess permissionAccess, String* name, String* machineName) { SetNames(); this->AddPermissionAccess(new MailslotPermissionEntry(permissionAccess, name, machineName)); } MailslotPermission(MailslotPermissionEntry* permissionAccessEntries[]) { SetNames(); if (permissionAccessEntries == 0) throw new ArgumentNullException(S"permissionAccessEntries"); for (int index = 0; index < permissionAccessEntries->Length; ++index) this->AddPermissionAccess(permissionAccessEntries[index]); } __property ArrayList* get_PermissionEntries() { if (this->innerCollection == 0) this->innerCollection = new ArrayList(); this->innerCollection->InsertRange(0, __try_cast<ICollection*>(ResourcePermissionBase::GetPermissionEntries())); return this->innerCollection; } };
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Requirements
Namespace: System.Security.Permissions
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
Assembly: System (in System.dll)
See Also
ResourcePermissionBase Members | System.Security.Permissions Namespace