Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / clr / src / BCL / System / Security / Permissions / FileDialogPermission.cs / 1 / FileDialogPermission.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // FileDialogPermission.cs // namespace System.Security.Permissions { using System; using System.Text; using System.Security; using System.Security.Util; using System.IO; using System.Runtime.Serialization; using System.Reflection; using System.Collections; using System.Globalization; [Serializable, Flags] [System.Runtime.InteropServices.ComVisible(true)] public enum FileDialogPermissionAccess { None = 0x00, Open = 0x01, Save = 0x02, OpenSave = Open | Save } [Serializable] [System.Runtime.InteropServices.ComVisible(true)] public sealed class FileDialogPermission : CodeAccessPermission, IUnrestrictedPermission, IBuiltInPermission { FileDialogPermissionAccess access; public FileDialogPermission(PermissionState state) { if (state == PermissionState.Unrestricted) { SetUnrestricted(true); } else if (state == PermissionState.None) { SetUnrestricted(false); Reset(); } else { throw new ArgumentException(Environment.GetResourceString("Argument_InvalidPermissionState")); } } public FileDialogPermission(FileDialogPermissionAccess access) { VerifyAccess(access); this.access = access; } public FileDialogPermissionAccess Access { get { return access; } set { VerifyAccess(value); access = value; } } public override IPermission Copy() { return new FileDialogPermission(this.access); } public override void FromXml(SecurityElement esd) { CodeAccessPermission.ValidateElement(esd, this); if (XMLUtil.IsUnrestricted(esd)) { SetUnrestricted(true); return; } access = FileDialogPermissionAccess.None; string accessXml = esd.Attribute("Access"); if (accessXml != null) access = (FileDialogPermissionAccess)Enum.Parse(typeof(FileDialogPermissionAccess), accessXml); } ///int IBuiltInPermission.GetTokenIndex() { return FileDialogPermission.GetTokenIndex(); } internal static int GetTokenIndex() { return BuiltInPermissionIndex.FileDialogPermissionIndex; } public override IPermission Intersect(IPermission target) { if (target == null) { return null; } else if (!VerifyType(target)) { throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName)); } FileDialogPermission operand = (FileDialogPermission)target; FileDialogPermissionAccess intersectAccess = access & operand.Access; if (intersectAccess == FileDialogPermissionAccess.None) return null; else return new FileDialogPermission(intersectAccess); } public override bool IsSubsetOf(IPermission target) { if (target == null) { // Only safe subset if this is empty return access == FileDialogPermissionAccess.None; } try { FileDialogPermission operand = (FileDialogPermission)target; if (operand.IsUnrestricted()) { return true; } else if (this.IsUnrestricted()) { return false; } else { int open = (int)(access & FileDialogPermissionAccess.Open); int save = (int)(access & FileDialogPermissionAccess.Save); int openTarget = (int)(operand.Access & FileDialogPermissionAccess.Open); int saveTarget = (int)(operand.Access & FileDialogPermissionAccess.Save); return open <= openTarget && save <= saveTarget; } } catch (InvalidCastException) { throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName)); } } public bool IsUnrestricted() { return access == FileDialogPermissionAccess.OpenSave; } void Reset() { access = FileDialogPermissionAccess.None; } void SetUnrestricted( bool unrestricted ) { if (unrestricted) { access = FileDialogPermissionAccess.OpenSave; } } public override SecurityElement ToXml() { SecurityElement esd = CodeAccessPermission.CreatePermissionElement( this, "System.Security.Permissions.FileDialogPermission" ); if (!IsUnrestricted()) { if (access != FileDialogPermissionAccess.None) { esd.AddAttribute("Access", Enum.GetName(typeof(FileDialogPermissionAccess), access)); } } else { esd.AddAttribute("Unrestricted", "true"); } return esd; } public override IPermission Union(IPermission target) { if (target == null) { return this.Copy(); } else if (!VerifyType(target)) { throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName)); } FileDialogPermission operand = (FileDialogPermission)target; return new FileDialogPermission(access | operand.Access); } static void VerifyAccess(FileDialogPermissionAccess access) { if ((access & ~FileDialogPermissionAccess.OpenSave) != 0 ) { throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Arg_EnumIllegalVal"), (int)access)); } } } } // 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
- ConfigPathUtility.cs
- ResourceReferenceExpressionConverter.cs
- GeometryModel3D.cs
- CustomTrackingRecord.cs
- BitmapCodecInfo.cs
- QueryOutputWriterV1.cs
- InvokePatternIdentifiers.cs
- ToolboxItemFilterAttribute.cs
- CqlLexerHelpers.cs
- DatagridviewDisplayedBandsData.cs
- PersonalizableAttribute.cs
- DesignerActionPropertyItem.cs
- TextEditorMouse.cs
- DbMetaDataFactory.cs
- PropertyCondition.cs
- AttributeCollection.cs
- HtmlButton.cs
- BitmapVisualManager.cs
- CodeCompiler.cs
- ReadOnlyAttribute.cs
- CollectionViewGroupInternal.cs
- SRef.cs
- DateTimeFormatInfoScanner.cs
- MasterPage.cs
- PointF.cs
- HtmlTextBoxAdapter.cs
- DataStorage.cs
- DetailsViewInsertedEventArgs.cs
- FileNameEditor.cs
- ToolStripRendererSwitcher.cs
- ThousandthOfEmRealPoints.cs
- PointValueSerializer.cs
- EdmPropertyAttribute.cs
- PixelShader.cs
- RectangleGeometry.cs
- GenericAuthenticationEventArgs.cs
- StorageEntitySetMapping.cs
- AppSecurityManager.cs
- DocumentApplication.cs
- LongMinMaxAggregationOperator.cs
- ObjectDataSourceView.cs
- VisualTransition.cs
- DataSourceCache.cs
- MappedMetaModel.cs
- HttpCapabilitiesEvaluator.cs
- ByeMessageCD1.cs
- ComPlusTypeLoader.cs
- FixedElement.cs
- MimeWriter.cs
- WebPartDeleteVerb.cs
- Setter.cs
- TabItem.cs
- GreenMethods.cs
- SqlDesignerDataSourceView.cs
- Hashtable.cs
- CFStream.cs
- RegisteredHiddenField.cs
- DirectoryNotFoundException.cs
- SQLResource.cs
- MouseEvent.cs
- ImageDrawing.cs
- OleDbConnection.cs
- CompModSwitches.cs
- HwndSourceParameters.cs
- OdbcException.cs
- AvTrace.cs
- XmlArrayItemAttributes.cs
- SqlParameterCollection.cs
- SslStream.cs
- RIPEMD160.cs
- compensatingcollection.cs
- DbCommandTree.cs
- NullableDecimalAverageAggregationOperator.cs
- ArgIterator.cs
- NativeWindow.cs
- ComponentCommands.cs
- SecurityRuntime.cs
- XmlSchemaComplexType.cs
- MobileControlBuilder.cs
- ModelTreeManager.cs
- NamespaceImport.cs
- PlanCompiler.cs
- RemoteWebConfigurationHostStream.cs
- SizeConverter.cs
- EventDriven.cs
- BamlLocalizer.cs
- OleAutBinder.cs
- UpDownBase.cs
- BaseCodePageEncoding.cs
- TrustLevel.cs
- ProxyAttribute.cs
- GenerateHelper.cs
- MemberDescriptor.cs
- _SslStream.cs
- DBPropSet.cs
- WsatAdminException.cs
- PropertyIDSet.cs
- GridViewColumn.cs
- TagPrefixInfo.cs
- NumberSubstitution.cs