Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / Data / System / Data / Common / DBConnection.cs / 5 / 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
- EndpointAddress.cs
- XD.cs
- SqlBuilder.cs
- HttpServerUtilityBase.cs
- CaseInsensitiveHashCodeProvider.cs
- baseaxisquery.cs
- EmptyEnumerator.cs
- PackagingUtilities.cs
- ScriptControl.cs
- VarRemapper.cs
- ExceptionUtil.cs
- ReflectionPermission.cs
- DocumentViewerBase.cs
- SqlRecordBuffer.cs
- SqlNamer.cs
- FillBehavior.cs
- SqlWebEventProvider.cs
- _NegoState.cs
- BindValidator.cs
- KerberosTicketHashIdentifierClause.cs
- sqlser.cs
- BufferBuilder.cs
- infer.cs
- _NegoState.cs
- SoapSchemaMember.cs
- AutomationPropertyInfo.cs
- IndentTextWriter.cs
- Compiler.cs
- MethodRental.cs
- DebugInfoGenerator.cs
- MouseButton.cs
- StandardTransformFactory.cs
- XmlSerializationGeneratedCode.cs
- Rfc2898DeriveBytes.cs
- OutputWindow.cs
- CompiledXpathExpr.cs
- EmptyCollection.cs
- PolyLineSegment.cs
- CompositeCollectionView.cs
- _RegBlobWebProxyDataBuilder.cs
- XdrBuilder.cs
- ArgIterator.cs
- PagesChangedEventArgs.cs
- Typography.cs
- LifetimeServices.cs
- GeneralTransform3DGroup.cs
- MsmqChannelListenerBase.cs
- LayoutTable.cs
- ButtonBase.cs
- LookupNode.cs
- XmlReaderDelegator.cs
- LookupBindingPropertiesAttribute.cs
- DynamicILGenerator.cs
- RawUIStateInputReport.cs
- ApplyImportsAction.cs
- Clock.cs
- TypeDependencyAttribute.cs
- AccessText.cs
- WeakEventManager.cs
- CodeAttributeArgumentCollection.cs
- Panel.cs
- FixedPageProcessor.cs
- GcSettings.cs
- InputLanguageCollection.cs
- QilSortKey.cs
- DocumentCollection.cs
- DbDataReader.cs
- WindowsPen.cs
- OutputCacheSection.cs
- BitmapSizeOptions.cs
- updateconfighost.cs
- SafeBitVector32.cs
- FieldInfo.cs
- DirectoryInfo.cs
- PtsHelper.cs
- XhtmlConformanceSection.cs
- TimeSpanMinutesOrInfiniteConverter.cs
- FormViewPagerRow.cs
- ClonableStack.cs
- DrawListViewSubItemEventArgs.cs
- DataSourceView.cs
- SectionRecord.cs
- CompilerState.cs
- HttpListenerPrefixCollection.cs
- ModelItem.cs
- UpdateTranslator.cs
- PolicyLevel.cs
- GroupAggregateExpr.cs
- ControlBindingsCollection.cs
- ClientSettingsSection.cs
- TextViewDesigner.cs
- ValidationSummary.cs
- FrameworkRichTextComposition.cs
- ClockGroup.cs
- ProfilePropertySettingsCollection.cs
- EventTrigger.cs
- EUCJPEncoding.cs
- ProcessManager.cs
- CodeGen.cs
- DnsEndPoint.cs