Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / CommonUI / System / Drawing / Printing / PrintingPermission.cs / 1 / PrintingPermission.cs
/* * Copyright (c) 2000 Microsoft Corporation. All Rights Reserved. * Microsoft Confidential. */ namespace System.Drawing.Printing { using System; using System.Security; using System.Security.Permissions; using System.IO; using System.Runtime.Serialization; using System.Reflection; using System.Collections; using System.Globalization; using System.Diagnostics.CodeAnalysis; ////// /// [Serializable] public sealed class PrintingPermission : CodeAccessPermission, IUnrestrictedPermission { private PrintingPermissionLevel printingLevel; ///Controls the ability to use the printer. This class cannot be inherited. ////// /// public PrintingPermission(PermissionState state) { if (state == PermissionState.Unrestricted) { printingLevel = PrintingPermissionLevel.AllPrinting; } else if (state == PermissionState.None) { printingLevel = PrintingPermissionLevel.NoPrinting; } else { throw new ArgumentException(SR.GetString(SR.InvalidPermissionState)); } } ///Initializes a new instance of the PrintingPermission class with either fully restricted /// or unrestricted access, as specified. ////// /// public PrintingPermission(PrintingPermissionLevel printingLevel) { VerifyPrintingLevel(printingLevel); this.printingLevel = printingLevel; } ///[To be supplied.] ////// /// public PrintingPermissionLevel Level { get { return printingLevel; } set { VerifyPrintingLevel(value); printingLevel = value; } } private static void VerifyPrintingLevel(PrintingPermissionLevel level) { if (level < PrintingPermissionLevel.NoPrinting || level > PrintingPermissionLevel.AllPrinting) { throw new ArgumentException(SR.GetString(SR.InvalidPermissionLevel)); } } //------------------------------------------------------ // // CODEACCESSPERMISSION IMPLEMENTATION // //----------------------------------------------------- ///[To be supplied.] ////// /// public bool IsUnrestricted() { return printingLevel == PrintingPermissionLevel.AllPrinting; } //----------------------------------------------------- // // IPERMISSION IMPLEMENTATION // //----------------------------------------------------- ///Gets a /// value indicating whether permission is unrestricted. ////// /// public override bool IsSubsetOf(IPermission target) { if (target == null) { return printingLevel == PrintingPermissionLevel.NoPrinting; } PrintingPermission operand = target as PrintingPermission; if(operand == null) { throw new ArgumentException(SR.GetString(SR.TargetNotPrintingPermission)); } return this.printingLevel <= operand.printingLevel; } ///Determines whether the current permission object is a subset of /// the specified permission. ////// /// public override IPermission Intersect(IPermission target) { if (target == null) { return null; } PrintingPermission operand = target as PrintingPermission; if(operand == null) { throw new ArgumentException(SR.GetString(SR.TargetNotPrintingPermission)); } PrintingPermissionLevel isectLevels = printingLevel < operand.printingLevel ? printingLevel : operand.printingLevel; if (isectLevels == PrintingPermissionLevel.NoPrinting) return null; else return new PrintingPermission(isectLevels); } ///Creates and returns a permission that is the intersection of the current /// permission object and a target permission object. ////// /// public override IPermission Union(IPermission target) { if (target == null) { return this.Copy(); } PrintingPermission operand = target as PrintingPermission; if(operand == null) { throw new ArgumentException(SR.GetString(SR.TargetNotPrintingPermission)); } PrintingPermissionLevel isectLevels = printingLevel > operand.printingLevel ? printingLevel : operand.printingLevel; if (isectLevels == PrintingPermissionLevel.NoPrinting) return null; else return new PrintingPermission(isectLevels); } ///Creates a permission that is the union of the permission object /// and the target parameter permission object. ////// /// [SuppressMessage("Microsoft.Security", "CA2103:ReviewImperativeSecurity")] public override IPermission Copy() { return new PrintingPermission(this.printingLevel); } ///Creates and returns an identical copy of the current permission /// object. ////// /// public override SecurityElement ToXml() { SecurityElement securityElement = new SecurityElement("IPermission"); securityElement.AddAttribute("class", this.GetType().FullName + ", " + this.GetType().Module.Assembly.FullName.Replace('\"', '\'')); securityElement.AddAttribute("version", "1"); if (!IsUnrestricted()) { securityElement.AddAttribute("Level", Enum.GetName(typeof(PrintingPermissionLevel), printingLevel)); } else { securityElement.AddAttribute("Unrestricted", "true"); } return securityElement; } ///Creates an XML encoding of the security object and its current /// state. ////// /// [SuppressMessage("Microsoft.Performance", "CA1808:AvoidCallsThatBoxValueTypes")] public override void FromXml(SecurityElement esd) { if (esd == null) { throw new ArgumentNullException("esd"); } String className = esd.Attribute("class"); if (className == null || className.IndexOf(this.GetType().FullName) == -1) { throw new ArgumentException(SR.GetString(SR.InvalidClassName)); } String unrestricted = esd.Attribute("Unrestricted"); if (unrestricted != null && String.Equals(unrestricted, "true", StringComparison.OrdinalIgnoreCase)) { printingLevel = PrintingPermissionLevel.AllPrinting; return; } printingLevel = PrintingPermissionLevel.NoPrinting; String printing = esd.Attribute("Level"); if (printing != null) { printingLevel = (PrintingPermissionLevel)Enum.Parse(typeof(PrintingPermissionLevel), printing); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.Reconstructs a security object with a specified state from an XML /// encoding. ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- TemplateControlParser.cs
- ZipIOLocalFileDataDescriptor.cs
- BindingExpression.cs
- GridViewCellAutomationPeer.cs
- StrongNameIdentityPermission.cs
- EntityDataSourceQueryBuilder.cs
- DesignerContextDescriptor.cs
- FrameworkElementFactoryMarkupObject.cs
- MappingException.cs
- RegexStringValidator.cs
- FilterableData.cs
- SQLStringStorage.cs
- AffineTransform3D.cs
- MenuBindingsEditorForm.cs
- TrustSection.cs
- InternalUserCancelledException.cs
- PagedDataSource.cs
- ConfigurationValues.cs
- cache.cs
- MarkerProperties.cs
- ObjRef.cs
- TimeZoneInfo.cs
- MatrixConverter.cs
- CacheChildrenQuery.cs
- OleTxTransaction.cs
- DataRowView.cs
- FastEncoderWindow.cs
- UTF8Encoding.cs
- TimeIntervalCollection.cs
- CustomWebEventKey.cs
- TemplateBuilder.cs
- GridProviderWrapper.cs
- RegexStringValidatorAttribute.cs
- HebrewNumber.cs
- HGlobalSafeHandle.cs
- SamlConstants.cs
- ScriptingWebServicesSectionGroup.cs
- InputLangChangeRequestEvent.cs
- NativeMethodsOther.cs
- DrawingVisual.cs
- PipeStream.cs
- SqlComparer.cs
- DoubleStorage.cs
- TextEffectResolver.cs
- EditorPart.cs
- CompilerLocalReference.cs
- QilLoop.cs
- TraceHelpers.cs
- DynamicResourceExtension.cs
- ZipIOLocalFileHeader.cs
- NetworkInformationException.cs
- ToolStripHighContrastRenderer.cs
- RijndaelManagedTransform.cs
- MetadataAssemblyHelper.cs
- SmtpNtlmAuthenticationModule.cs
- SqlCommandSet.cs
- Decorator.cs
- AliasExpr.cs
- AmbientProperties.cs
- HtmlFormAdapter.cs
- ImportContext.cs
- FolderBrowserDialog.cs
- ReadWriteObjectLock.cs
- AsyncOperation.cs
- SQLCharsStorage.cs
- SpAudioStreamWrapper.cs
- LinqDataSourceStatusEventArgs.cs
- FormatterServices.cs
- BitmapEditor.cs
- TextAction.cs
- ExecutedRoutedEventArgs.cs
- ColorConverter.cs
- GridViewUpdatedEventArgs.cs
- IdentityReference.cs
- Attributes.cs
- FileVersionInfo.cs
- DnsEndPoint.cs
- ArgumentsParser.cs
- PersonalizationProviderCollection.cs
- BooleanKeyFrameCollection.cs
- Validator.cs
- ElementProxy.cs
- MessageSecurityVersionConverter.cs
- LinkTarget.cs
- Configuration.cs
- SafeProcessHandle.cs
- SamlEvidence.cs
- PresentationTraceSources.cs
- FragmentQueryKB.cs
- LocatorGroup.cs
- FacetValueContainer.cs
- UInt32Storage.cs
- ObjectViewEntityCollectionData.cs
- WorkflowHostingEndpoint.cs
- HtmlInputPassword.cs
- TaskFileService.cs
- DisplayInformation.cs
- LifetimeMonitor.cs
- OdbcDataAdapter.cs
- SmiEventSink.cs