Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / Data / System / Data / Common / DBConnection.cs / 1 / DBConnection.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Common { using System; using System.ComponentModel; using System.Data; #if WINFSInternalOnly internal #else public #endif abstract class DbConnection : Component, IDbConnection { // V1.2.3300 private StateChangeEventHandler _stateChangeEventHandler; protected DbConnection() : base() { } [ DefaultValue(""), RecommendedAsConfigurable(true), RefreshProperties(RefreshProperties.All), ResCategoryAttribute(Res.DataCategory_Data), ] abstract public string ConnectionString { get; set; } [ ResCategoryAttribute(Res.DataCategory_Data), ] virtual public int ConnectionTimeout { get { return ADP.DefaultConnectionTimeout; } } [ ResCategoryAttribute(Res.DataCategory_Data), ] abstract public string Database { get; } [ ResCategoryAttribute(Res.DataCategory_Data), ] abstract public string DataSource { // NOTE: if you plan on allowing the data source to be changed, you // should implement a ChangeDataSource method, in keeping with // the ChangeDatabase method paradigm. get; } ////// The associated provider factory for derived class. /// virtual protected DbProviderFactory DbProviderFactory { get { return null; } } internal DbProviderFactory ProviderFactory { get { return DbProviderFactory; } } [ Browsable(false), ] abstract public string ServerVersion { get; } [ Browsable(false), ResDescriptionAttribute(Res.DbConnection_State), ] abstract public ConnectionState State { get; } [ ResCategoryAttribute(Res.DataCategory_StateChange), ResDescriptionAttribute(Res.DbConnection_StateChange), ] virtual public event StateChangeEventHandler StateChange { add { _stateChangeEventHandler += value; } remove { _stateChangeEventHandler -= value; } } abstract protected DbTransaction BeginDbTransaction(IsolationLevel isolationLevel); public DbTransaction BeginTransaction() { return BeginDbTransaction(IsolationLevel.Unspecified); } public DbTransaction BeginTransaction(IsolationLevel isolationLevel) { return BeginDbTransaction(isolationLevel); } IDbTransaction IDbConnection.BeginTransaction() { return BeginDbTransaction(IsolationLevel.Unspecified); } IDbTransaction IDbConnection.BeginTransaction(IsolationLevel isolationLevel) { return BeginDbTransaction(isolationLevel); } abstract public void Close(); abstract public void ChangeDatabase(string databaseName); public DbCommand CreateCommand() { return CreateDbCommand(); } IDbCommand IDbConnection.CreateCommand() { return CreateDbCommand(); } abstract protected DbCommand CreateDbCommand(); virtual public void EnlistTransaction(System.Transactions.Transaction transaction) { // NOTE: This is virtual because not all providers may choose to support // distributed transactions. throw ADP.NotSupported(); } // these need to be here so that GetSchema is visible when programming to a dbConnection object. // they are overridden by the real implementations in DbConnectionBase virtual public DataTable GetSchema() { throw ADP.NotSupported(); } virtual public DataTable GetSchema(string collectionName) { throw ADP.NotSupported(); } virtual public DataTable GetSchema(string collectionName, string[] restrictionValues ) { throw ADP.NotSupported(); } protected virtual void OnStateChange(StateChangeEventArgs stateChange) { StateChangeEventHandler handler = _stateChangeEventHandler; if (null != handler) { handler(this, stateChange); } } abstract public void Open(); } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Common { using System; using System.ComponentModel; using System.Data; #if WINFSInternalOnly internal #else public #endif abstract class DbConnection : Component, IDbConnection { // V1.2.3300 private StateChangeEventHandler _stateChangeEventHandler; protected DbConnection() : base() { } [ DefaultValue(""), RecommendedAsConfigurable(true), RefreshProperties(RefreshProperties.All), ResCategoryAttribute(Res.DataCategory_Data), ] abstract public string ConnectionString { get; set; } [ ResCategoryAttribute(Res.DataCategory_Data), ] virtual public int ConnectionTimeout { get { return ADP.DefaultConnectionTimeout; } } [ ResCategoryAttribute(Res.DataCategory_Data), ] abstract public string Database { get; } [ ResCategoryAttribute(Res.DataCategory_Data), ] abstract public string DataSource { // NOTE: if you plan on allowing the data source to be changed, you // should implement a ChangeDataSource method, in keeping with // the ChangeDatabase method paradigm. get; } ////// The associated provider factory for derived class. /// virtual protected DbProviderFactory DbProviderFactory { get { return null; } } internal DbProviderFactory ProviderFactory { get { return DbProviderFactory; } } [ Browsable(false), ] abstract public string ServerVersion { get; } [ Browsable(false), ResDescriptionAttribute(Res.DbConnection_State), ] abstract public ConnectionState State { get; } [ ResCategoryAttribute(Res.DataCategory_StateChange), ResDescriptionAttribute(Res.DbConnection_StateChange), ] virtual public event StateChangeEventHandler StateChange { add { _stateChangeEventHandler += value; } remove { _stateChangeEventHandler -= value; } } abstract protected DbTransaction BeginDbTransaction(IsolationLevel isolationLevel); public DbTransaction BeginTransaction() { return BeginDbTransaction(IsolationLevel.Unspecified); } public DbTransaction BeginTransaction(IsolationLevel isolationLevel) { return BeginDbTransaction(isolationLevel); } IDbTransaction IDbConnection.BeginTransaction() { return BeginDbTransaction(IsolationLevel.Unspecified); } IDbTransaction IDbConnection.BeginTransaction(IsolationLevel isolationLevel) { return BeginDbTransaction(isolationLevel); } abstract public void Close(); abstract public void ChangeDatabase(string databaseName); public DbCommand CreateCommand() { return CreateDbCommand(); } IDbCommand IDbConnection.CreateCommand() { return CreateDbCommand(); } abstract protected DbCommand CreateDbCommand(); virtual public void EnlistTransaction(System.Transactions.Transaction transaction) { // NOTE: This is virtual because not all providers may choose to support // distributed transactions. throw ADP.NotSupported(); } // these need to be here so that GetSchema is visible when programming to a dbConnection object. // they are overridden by the real implementations in DbConnectionBase virtual public DataTable GetSchema() { throw ADP.NotSupported(); } virtual public DataTable GetSchema(string collectionName) { throw ADP.NotSupported(); } virtual public DataTable GetSchema(string collectionName, string[] restrictionValues ) { throw ADP.NotSupported(); } protected virtual void OnStateChange(StateChangeEventArgs stateChange) { StateChangeEventHandler handler = _stateChangeEventHandler; if (null != handler) { handler(this, stateChange); } } abstract public void Open(); } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- _NetworkingPerfCounters.cs
- BlockCollection.cs
- XmlMapping.cs
- XmlWrappingReader.cs
- HtmlTable.cs
- Vars.cs
- ValidationResults.cs
- ComplexPropertyEntry.cs
- SolidColorBrush.cs
- OleDbDataReader.cs
- PerfCounters.cs
- InternalRelationshipCollection.cs
- ComponentChangedEvent.cs
- EntityProxyFactory.cs
- ConditionedDesigner.cs
- FlowDocumentPaginator.cs
- WebPermission.cs
- Control.cs
- ConfigXmlAttribute.cs
- PaperSize.cs
- Crypto.cs
- XmlNavigatorStack.cs
- Literal.cs
- BitmapFrame.cs
- ApplicationContext.cs
- __Error.cs
- XamlGridLengthSerializer.cs
- ButtonBase.cs
- IndexerNameAttribute.cs
- MetadataArtifactLoaderComposite.cs
- DesignTable.cs
- QueryOutputWriter.cs
- DisplayInformation.cs
- SessionEndingEventArgs.cs
- PropertyDescriptorCollection.cs
- ResolvedKeyFrameEntry.cs
- OleDbException.cs
- SecurityDocument.cs
- wmiprovider.cs
- SqlCacheDependency.cs
- CounterSampleCalculator.cs
- GeometryGroup.cs
- RTLAwareMessageBox.cs
- SchemaEntity.cs
- DataBindingCollection.cs
- DrawingContextDrawingContextWalker.cs
- OptimalTextSource.cs
- HostExecutionContextManager.cs
- Part.cs
- AutoResetEvent.cs
- DeflateStream.cs
- PageContentCollection.cs
- FakeModelPropertyImpl.cs
- CrossAppDomainChannel.cs
- ExecutionEngineException.cs
- CompilerScopeManager.cs
- ReadOnlyState.cs
- RadioButtonStandardAdapter.cs
- XamlSerializerUtil.cs
- TypeInitializationException.cs
- SmiContextFactory.cs
- safemediahandle.cs
- Point.cs
- ConfigXmlWhitespace.cs
- XmlLoader.cs
- NamedPipeTransportElement.cs
- NotifyCollectionChangedEventArgs.cs
- FunctionImportMapping.cs
- DurableDispatcherAddressingFault.cs
- ContextStaticAttribute.cs
- RowToParametersTransformer.cs
- PreservationFileReader.cs
- XmlEncoding.cs
- DesignTimeParseData.cs
- MsmqAppDomainProtocolHandler.cs
- XmlFileEditor.cs
- RadioButtonPopupAdapter.cs
- Renderer.cs
- StreamGeometry.cs
- WsdlBuildProvider.cs
- ProxyOperationRuntime.cs
- CodeTypeReference.cs
- InputLanguage.cs
- DataGridRowHeaderAutomationPeer.cs
- InvalidOperationException.cs
- DocumentReference.cs
- EmptyEnumerable.cs
- CollectionViewProxy.cs
- WindowsListViewGroupSubsetLink.cs
- CollectionTypeElement.cs
- XsltLibrary.cs
- RectIndependentAnimationStorage.cs
- StylusButtonEventArgs.cs
- ComponentResourceKeyConverter.cs
- TreeViewCancelEvent.cs
- RequestStatusBarUpdateEventArgs.cs
- BufferedOutputAsyncStream.cs
- TextChangedEventArgs.cs
- DataGridViewCellMouseEventArgs.cs
- DataGridToolTip.cs