AdoDotNetConnectionSupport Class

Artikel
02/23/2011

Provides an implementation of the IVsDataConnectionSupport interface, and an indirect implementation of the IVsDataCommand, IVsDataAsyncCommand, and IVsDataTransaction interfaces, by using appropriate ADO.NET objects.

Inheritance Hierarchy

System.Object
  Microsoft.VisualStudio.Data.Framework.ServiceProvider
    Microsoft.VisualStudio.Data.Framework.DataSiteableServiceProvider<IVsDataConnection>
      Microsoft.VisualStudio.Data.Framework.DataConnectionSupport
        Microsoft.VisualStudio.Data.Framework.AdoDotNet.AdoDotNetConnectionSupport

Namespace: Microsoft.VisualStudio.Data.Framework.AdoDotNet
Assembly: Microsoft.VisualStudio.Data.Framework (in Microsoft.VisualStudio.Data.Framework.dll)

Syntax

'Declaration
Public Class AdoDotNetConnectionSupport _
    Inherits DataConnectionSupport _
    Implements IVsDataSiteableObject(Of IVsDataProvider)

public class AdoDotNetConnectionSupport : DataConnectionSupport, 
    IVsDataSiteableObject<IVsDataProvider>

public ref class AdoDotNetConnectionSupport : public DataConnectionSupport, 
    IVsDataSiteableObject<IVsDataProvider^>

type AdoDotNetConnectionSupport =  
    class
        inherit DataConnectionSupport
        interface IVsDataSiteableObject<IVsDataProvider>
    end

public class AdoDotNetConnectionSupport extends DataConnectionSupport implements IVsDataSiteableObject<IVsDataProvider>

The AdoDotNetConnectionSupport type exposes the following members.

Constructors

	Name	Description
	AdoDotNetConnectionSupport	Initializes an instance of the AdoDotNetConnectionSupport class.

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Properties

	Name	Description
	Connection	Gets the DbConnection object being used by the current connection support instance.
	ConnectionString	Gets or sets a string representation of information required to establish a specified data source connection. (Overrides DataConnectionSupport.ConnectionString.)
	ConnectionTimeout	Gets or sets the amount of time, in seconds, to wait to establish a connection before terminating the attempt and generating a time-out error. (Overrides DataConnectionSupport.ConnectionTimeout.)
	CurrentCommand	Gets the DbCommand object currently being used by the current connection support instance.
	CurrentTransaction	Gets the DbTransaction object currently being used by the current connection support instance.
	InAsyncMode	Gets a value indicating whether the connection is in an asynchronous mode.
	ParentProvider	Gets the current instance of the parent service provider. (Inherited from ServiceProvider.)
	ProviderObject	Gets the underlying provider object for the specified connection. (Overrides DataConnectionSupport.ProviderObject.)
	ServiceProvider	Gets the global Visual Studio service provider. (Inherited from DataConnectionSupport.)
	Site	Gets or sets the site. (Inherited from DataSiteableServiceProvider<T>.)
	State	Gets the state of the data connection. (Overrides DataConnectionSupport.State.)

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Methods

	Name	Description
	AddService(Type, ServiceCreatorCallback)	Adds the specified service to the internal collection of services. (Inherited from ServiceProvider.)
	AddService(Type, Object)	Adds the specified service to the internal collection of services. (Inherited from ServiceProvider.)
	AddService(Type, ServiceCreatorCallback, Boolean)	Adds the specified service to the internal collection of services or to the parent service container. (Inherited from ServiceProvider.)
	AddService(Type, Object, Boolean)	Adds the specified service to the collection of service objects or to the parent service container. (Inherited from ServiceProvider.)
	BeginTransactionCore	Initiates a transaction.
	Close	Closes the current data connection. (Overrides DataConnectionSupport.Close().)
	CommitTransactionCore	Commits a transaction.
	CreateParameterCore	Creates a new data parameter with interface IVsDataProvider.
	CreateParameterFrom	Creates a new data parameter with interface IVsDataProvider, using a copy of the specified data parameter.
	CreateService	Creates a new service object based on the specified interface service type. (Overrides DataConnectionSupport.CreateService(IServiceContainer, Type).)
	DeriveParametersCore	Derives parameters that can be specified for a given command.
	DeriveParametersOn	Override to derive parameters from the given command.
	DeriveSchemaCore	Derives the schema returned from a specified command, indicating the layout of items and blocks in a given data reader.
	Dispose()	Releases all resources held by the data connection. (Inherited from DataConnectionSupport.)
	Dispose(Boolean)	Releases all resources held by the data connection. (Overrides DataConnectionSupport.Dispose(Boolean).)
	Equals	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	ExecuteCore	Executes a specified command, optionally with parameters, and returns results as an IVsDataReader object.
	ExecuteWithoutResultsCore	Executes a specified command, optionally with parameters. Does not return any query results.
	Finalize	Releases all resources held by the data connection when the data connection support object is destroyed. (Inherited from DataConnectionSupport.)
	GetCommand	Constructs a DbCommand object from the given command string.
	GetCommandType	Converts an enumeration value from DataCommandType to its corresponding value in the CommandType enumeration.
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetService(Guid)	Retrieves a service with a specified service GUID. (Inherited from ServiceProvider.)
	GetService(Type)	Retrieves a service of the specified type. (Inherited from ServiceProvider.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	Initialize	Initializes the specified ADO.NET connection, using a specified provider. (Overrides DataConnectionSupport.Initialize(Object).)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	OnMessageReceived	Handles the MessageReceived event. (Inherited from DataConnectionSupport.)
	OnSiteChanged	Raises the SiteChanged() event. (Inherited from DataSiteableServiceProvider<T>.)
	OnStateChanged	Handles the StateChanged event. (Inherited from DataConnectionSupport.)
	Open	Opens the specified data connection. (Overrides DataConnectionSupport.Open(Boolean).)
	PrepareCore	Prepares the specified command on the data source to be executed; the command can be executed multiple times, with varying parameters.
	RemoveService(Type)	Removes the specified service from the internal services collection (Inherited from ServiceProvider.)
	RemoveService(Type, Boolean)	Removes the specified service from the internal services collection or from the parent service container. (Inherited from ServiceProvider.)
	RollbackTransactionCore	Rolls back, or voids, a transaction and returns the new current transaction level.
	SetParameters	Adds new parameters to the given DbCommand command from the specified array of IVsDataParameter parameters.
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Events

	Name	Description
	MessageReceived	Occurs when a message is received from the data source. (Inherited from DataConnectionSupport.)
	SiteChanged	Occurs when the site has changed. (Inherited from DataSiteableServiceProvider<T>.)
	StateChanged	Occurs when the state of the data connection has changed. (Inherited from DataConnectionSupport.)

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Explicit Interface Implementations

	Name	Description
	IServiceProvider.QueryService	Performs as a factory for services that are exposed through an implementation of IServiceProvider. (Inherited from ServiceProvider.)
	IVsDataSiteableObject<IVsDataProvider>.Site	Gets the IVsDataProvider object currently being used by the current connection support instance.

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Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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