Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Compilation / ConnectionStringsExpressionBuilder.cs / 1 / ConnectionStringsExpressionBuilder.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Compilation { using System; using System.Security.Permissions; using System.CodeDom; using System.Configuration; using System.Globalization; using System.Web.UI; [ExpressionPrefix("ConnectionStrings")] [ExpressionEditor("System.Web.UI.Design.ConnectionStringsExpressionEditor, " + AssemblyRef.SystemDesign)] [AspNetHostingPermission(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)] public class ConnectionStringsExpressionBuilder : ExpressionBuilder { public override bool SupportsEvaluate { get { return true; } } public override object ParseExpression(string expression, Type propertyType, ExpressionBuilderContext context) { // This code is also copied in ConnectionStringsExpressionEditor.ParseExpression() const string connectionStringSuffix = ".connectionstring"; const string providerNameSuffix = ".providername"; string name = String.Empty; bool connectionString = true; if (expression != null) { if (expression.EndsWith(connectionStringSuffix, StringComparison.OrdinalIgnoreCase)) { name = expression.Substring(0, expression.Length - connectionStringSuffix.Length); } else { if (expression.EndsWith(providerNameSuffix, StringComparison.OrdinalIgnoreCase)) { connectionString = false; name = expression.Substring(0, expression.Length - providerNameSuffix.Length); } else { name = expression; } } } return new Pair(name, connectionString); } public override CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context) { Pair p = (Pair)parsedData; string name = (string)p.First; bool connectionString = (bool)p.Second; if (connectionString) { return new CodeMethodInvokeExpression(new CodeTypeReferenceExpression(this.GetType()), "GetConnectionString", new CodePrimitiveExpression(name)); } else { return new CodeMethodInvokeExpression(new CodeTypeReferenceExpression(this.GetType()), "GetConnectionStringProviderName", new CodePrimitiveExpression(name)); } } public override object EvaluateExpression(object target, BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context) { Pair p = (Pair)parsedData; string name = (string)p.First; bool connectionString = (bool)p.Second; ConnectionStringSettings setting = ConfigurationManager.ConnectionStrings[name]; if (connectionString) { return GetConnectionString(name); } else { return GetConnectionStringProviderName(name); } } public static string GetConnectionStringProviderName(string connectionStringName) { ConnectionStringSettings setting = ConfigurationManager.ConnectionStrings[connectionStringName]; if (setting == null) { throw new InvalidOperationException(SR.GetString(SR.Connection_string_not_found, connectionStringName)); } return setting.ProviderName; } public static string GetConnectionString(string connectionStringName) { ConnectionStringSettings setting = ConfigurationManager.ConnectionStrings[connectionStringName]; if (setting == null) { throw new InvalidOperationException(SR.GetString(SR.Connection_string_not_found, connectionStringName)); } return setting.ConnectionString; } } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- TabControlAutomationPeer.cs
- QueryServiceConfigHandle.cs
- AccessText.cs
- IgnoreDeviceFilterElementCollection.cs
- XmlDocumentSerializer.cs
- BaseParser.cs
- XmlNamespaceManager.cs
- HtmlInputText.cs
- OptimizedTemplateContentHelper.cs
- SortableBindingList.cs
- PropertyExpression.cs
- SQLInt64.cs
- HybridDictionary.cs
- AuthenticodeSignatureInformation.cs
- DrawingImage.cs
- CompilationRelaxations.cs
- SystemWebSectionGroup.cs
- UnsafeNativeMethods.cs
- PersonalizableTypeEntry.cs
- MonthChangedEventArgs.cs
- GetPageNumberCompletedEventArgs.cs
- AttachInfo.cs
- IndividualDeviceConfig.cs
- ConditionalAttribute.cs
- PenContext.cs
- DesignerCommandAdapter.cs
- XPathCompileException.cs
- AttributedMetaModel.cs
- ObjectQueryState.cs
- SapiInterop.cs
- Matrix3DStack.cs
- InvalidTimeZoneException.cs
- DropSourceBehavior.cs
- ResourcePool.cs
- SqlProviderManifest.cs
- BindingSource.cs
- PrintingPermission.cs
- TableAdapterManagerNameHandler.cs
- SoapExtensionImporter.cs
- CachedPathData.cs
- CharacterString.cs
- SiteMapPath.cs
- StandardToolWindows.cs
- MenuEventArgs.cs
- FormViewModeEventArgs.cs
- FactoryRecord.cs
- AssemblyNameProxy.cs
- CustomValidator.cs
- SchemaNotation.cs
- DependencyObjectProvider.cs
- InputLangChangeEvent.cs
- RedirectionProxy.cs
- Encoder.cs
- CompiledXpathExpr.cs
- SkewTransform.cs
- ModelFunctionTypeElement.cs
- TextEditorThreadLocalStore.cs
- AppDomainCompilerProxy.cs
- XmlWriter.cs
- ImageListStreamer.cs
- SystemDiagnosticsSection.cs
- RightsManagementEncryptedStream.cs
- PeerNameRecord.cs
- TextTrailingCharacterEllipsis.cs
- SafeArrayTypeMismatchException.cs
- OLEDB_Util.cs
- SystemTcpStatistics.cs
- Comparer.cs
- WaveHeader.cs
- linebase.cs
- ImpersonationContext.cs
- BaseDataListPage.cs
- Stacktrace.cs
- TrustDriver.cs
- ConfigXmlSignificantWhitespace.cs
- BooleanAnimationBase.cs
- MemberInfoSerializationHolder.cs
- LicenseManager.cs
- TrustLevel.cs
- Int16Converter.cs
- ConnectorSelectionGlyph.cs
- SpeakCompletedEventArgs.cs
- PanelContainerDesigner.cs
- PhysicalAddress.cs
- TabletCollection.cs
- AffineTransform3D.cs
- MatrixStack.cs
- DataServiceProviderWrapper.cs
- InputLanguageCollection.cs
- ObjectRef.cs
- Binding.cs
- PreservationFileReader.cs
- WinFormsSecurity.cs
- ListViewUpdateEventArgs.cs
- Rectangle.cs
- FrameworkTemplate.cs
- MatrixTransform3D.cs
- DATA_BLOB.cs
- NullableConverter.cs
- XamlDesignerSerializationManager.cs