Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / tx / System / Transactions / DistributedTransactionPermission.cs / 1305376 / DistributedTransactionPermission.cs
using System; using System.Security; using System.Security.Permissions; using System.Text; using System.Globalization; namespace System.Transactions { [SerializableAttribute()] public sealed class DistributedTransactionPermission: CodeAccessPermission, IUnrestrictedPermission { private bool unrestricted; public DistributedTransactionPermission(PermissionState state) { if(state == PermissionState.Unrestricted) { unrestricted = true; } else { unrestricted = false; } } public bool IsUnrestricted() { return unrestricted; } //Define the rest of your custom permission here. You must //implement IsUnrestricted, and override Copy, Intersect, //IsSubsetOf, ToXML, and FromXML. public override IPermission Copy() { DistributedTransactionPermission copy = new DistributedTransactionPermission(PermissionState.None); if(this.IsUnrestricted()) { copy.unrestricted = true; } else { copy.unrestricted = false; } return copy; } public override IPermission Intersect(IPermission target) { try { if(null == target) { return null; } DistributedTransactionPermission passedPermission = (DistributedTransactionPermission)target; if(!passedPermission.IsUnrestricted()) { return passedPermission; } return this.Copy(); } catch (InvalidCastException) { throw new ArgumentException( SR.GetString( SR.ArgumentWrongType ), "target"); } } public override IPermission Union(IPermission target) { try { if(null == target) { return this.Copy(); } DistributedTransactionPermission passedPermission = (DistributedTransactionPermission)target; if(passedPermission.IsUnrestricted()) { return passedPermission; } return this.Copy(); } catch (InvalidCastException) { throw new ArgumentException( SR.GetString( SR.ArgumentWrongType ), "target"); } } public override bool IsSubsetOf(IPermission target) { if(null == target) { return !this.unrestricted; } try { DistributedTransactionPermission passedPermission = (DistributedTransactionPermission)target; // If the current permission is "none" it will always be a subset of // any other DistributedTransactionPermission. if ( !this.unrestricted ) { return true; } // At this point, we know the current permission is unrestricted. If // the passed permission is unrestricted, we have a subset. if ( passedPermission.unrestricted ) { return true; } // If we get here, the current permission is unrestricted, but the passed // permission is "none", so the current permission is NOT a subset of // the passed permission. return false; } catch (InvalidCastException) { throw new ArgumentException( SR.GetString( SR.ArgumentWrongType ), "target"); } } public override SecurityElement ToXml() { SecurityElement element = new SecurityElement("IPermission"); Type type = this.GetType(); StringBuilder assemblyName = new StringBuilder(type.Assembly.ToString()); assemblyName.Replace('\"', '\''); element.AddAttribute("class", type.FullName + ", " + assemblyName); element.AddAttribute("version", "1"); element.AddAttribute("Unrestricted", unrestricted.ToString()); return element; } public override void FromXml(SecurityElement securityElement) { if ( null == securityElement ) { throw new ArgumentNullException( "securityElement" ); } if (!securityElement.Tag.Equals ("IPermission")) { throw new ArgumentException( SR.GetString( SR.ArgumentWrongType ), "securityElement" ); } string element = securityElement.Attribute("Unrestricted"); if(null != element) { this.unrestricted = Convert.ToBoolean(element, CultureInfo.InvariantCulture); } else { this.unrestricted = false; } } } [AttributeUsageAttribute(AttributeTargets.All, AllowMultiple = true)] public sealed class DistributedTransactionPermissionAttribute: CodeAccessSecurityAttribute { bool unrestricted = false; public new bool Unrestricted { get{ return unrestricted; } set{ unrestricted = value; } } public DistributedTransactionPermissionAttribute(SecurityAction action): base (action) { } public override IPermission CreatePermission() { if(Unrestricted) { return new DistributedTransactionPermission(PermissionState.Unrestricted); } else { return new DistributedTransactionPermission(PermissionState.None); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- WorkflowQueue.cs
- BookmarkScopeInfo.cs
- DataGridViewRowContextMenuStripNeededEventArgs.cs
- SqlBooleanMismatchVisitor.cs
- AttributeQuery.cs
- DecimalAnimationUsingKeyFrames.cs
- DefaultPropertyAttribute.cs
- Oid.cs
- XPathQilFactory.cs
- IsolatedStorageFileStream.cs
- AssemblyHash.cs
- MouseBinding.cs
- SystemIPv4InterfaceProperties.cs
- DuplexChannel.cs
- CodeTypeOfExpression.cs
- TopClause.cs
- PieceDirectory.cs
- DataFormats.cs
- TrustManagerMoreInformation.cs
- SizeFConverter.cs
- RecordManager.cs
- BinaryParser.cs
- SeverityFilter.cs
- PeerNameRecord.cs
- SafeTimerHandle.cs
- SiteMap.cs
- SecureStringHasher.cs
- ScrollProperties.cs
- DefaultAsyncDataDispatcher.cs
- SettingsPropertyCollection.cs
- PropertyChangeTracker.cs
- ContractMapping.cs
- SqlCacheDependencySection.cs
- SHA384Cng.cs
- IRCollection.cs
- BinaryParser.cs
- CodePageUtils.cs
- SourceItem.cs
- MatrixUtil.cs
- SQLDouble.cs
- _BasicClient.cs
- SystemIPGlobalStatistics.cs
- CollectionViewGroup.cs
- XmlReaderSettings.cs
- RootNamespaceAttribute.cs
- InputProcessorProfiles.cs
- CurrentChangedEventManager.cs
- ListView.cs
- Timer.cs
- XmlSchemaType.cs
- AsnEncodedData.cs
- ImpersonationOption.cs
- XmlSerializerAssemblyAttribute.cs
- XamlParser.cs
- ChannelHandler.cs
- UpdateProgress.cs
- PerfCounterSection.cs
- DictionaryEntry.cs
- GridViewDeletedEventArgs.cs
- PersonalizationProviderHelper.cs
- path.cs
- FormatterConverter.cs
- MethodBody.cs
- TransportChannelFactory.cs
- InlineObject.cs
- ChunkedMemoryStream.cs
- TabletCollection.cs
- ResXBuildProvider.cs
- EncryptedData.cs
- TemplateContent.cs
- SqlDataSourceSelectingEventArgs.cs
- NamedPipeAppDomainProtocolHandler.cs
- Behavior.cs
- SlipBehavior.cs
- UiaCoreProviderApi.cs
- PageOrientation.cs
- SafeMILHandleMemoryPressure.cs
- GroupBoxRenderer.cs
- webclient.cs
- SoapExtensionReflector.cs
- Preprocessor.cs
- HtmlLink.cs
- EntityViewGenerationAttribute.cs
- GeometryConverter.cs
- SyndicationFeed.cs
- GridViewRowCollection.cs
- mansign.cs
- BCryptSafeHandles.cs
- Message.cs
- SetterBase.cs
- HttpCachePolicy.cs
- SamlNameIdentifierClaimResource.cs
- DefaultHttpHandler.cs
- ApplyHostConfigurationBehavior.cs
- ExtensionDataReader.cs
- SemaphoreFullException.cs
- httpserverutility.cs
- BrushValueSerializer.cs
- HelloMessageApril2005.cs
- DesignerPerfEventProvider.cs