TADOConnection Members

The following tables list the members exposed by TADOConnection.

	Name	Description
	FComponentStyle	This is FComponentStyle, a member of class TComponent.

Protected Methods

	Name	Description
	_AddRef	Called when an application uses a component interface.
	_Release	Called when an application releases a component interface.
	AssignTo	Copies the properties of an object to a destination object.
	BeginTransComplete	This is BeginTransComplete, a member of class TADOConnection.
	ChangeName	Sets the private, internal storage for the Name property to the string passed in NewName.
	CheckActive	This is CheckActive, a member of class TADOConnection.
	CheckDisconnect	This is CheckDisconnect, a member of class TADOConnection.
	CheckInactive	This is CheckInactive, a member of class TADOConnection.
	CommitTransComplete	This is CommitTransComplete, a member of class TADOConnection.
	ConnectComplete	This is ConnectComplete, a member of class TADOConnection.
	ConnectionPoint	This is ConnectionPoint, a member of class TADOConnection.
	DefineProperties	Designates methods for storing an object's unpublished data on a stream such as a form file.
	DefineProperties	Provides an interface for a method that reads and writes otherwise unpublished data.
	Disconnect	This is Disconnect, a member of class TADOConnection.
	DoConnect	Provides the interface for a method that opens a connection.
	DoDisconnect	Provides the interface for a method that terminates the connection.
	ExecuteComplete	This is ExecuteComplete, a member of class TADOConnection.
	GetChildOwner	Returns the owner of a child component being read from a stream.
	GetChildParent	Returns the parent, or if there is no parent, returns the owner of a child component being read from a stream.
	GetChildren	This is GetChildren, a member of class TComponent.
	GetConnected	Returns the value of the Connected property.
	GetDataSet	Returns a dataset, given its index in the DataSets property array.
	GetDataSetCount	Returns the value of the DataSetCount property.
	GetErrors	This is GetErrors, a member of class TADOConnection.
	GetIDsOfNames	Maps a single member and an optional set of argument names to a corresponding set of integer dispatch identifiers (dispIDs).
	GetOwner	Returns the owner of a component.
	GetOwner	Returns the owner of an object.
	GetTypeInfo	Retrieves the type information for an object.
	GetTypeInfoCount	Returns the number of type information interfaces that an object provides (either 0 or 1).
	InfoMessage	This is InfoMessage, a member of class TADOConnection.
	Invoke	Provides access to Automation properties and methods when the component wraps an Automation object.
	Loaded	Initializes the connection component after all objects in the form or data module have been loaded.
	Notification	Forwards notification messages to all owned components.
	PaletteCreated	Responds when the component is created from the component palette.
	QueryInterface	Returns a reference to a specified interface if the object supports that interface.
	ReadState	This is ReadState, a member of class TComponent.
	RegisterClient	Registers an object that uses the connection component.
	RollbackTransComplete	This is RollbackTransComplete, a member of class TADOConnection.
	SendConnectEvent	Informs all registered clients that use the connection component when a connection is opened or closed.
	SetAncestor	This is SetAncestor, a member of class TComponent.
	SetChildOrder	This is SetChildOrder, a member of class TComponent.
	SetConnected	Changes the value of the Connected property.
	SetDesigning	Ensures that components inserted at design time have their design-mode flag set.
	SetDesignInstance	Ensures that components inserted at design time have their design-mode flag set.
	SetInline	Sets the csInline bit of the component's ComponentState property
	SetName	Sets the value of the Name property.
	SetParentComponent	This is SetParentComponent, a member of class TComponent.
	UnRegisterClient	Removes a registered client so that it is no longer associated with the connection component.
	Updated	Clears the csUpdating state in the component's ComponentState property when the component finishes updating.
	UpdateRegistry	Provides the interface for a method that adds type library and version information to the Registry on components that implement COM interfaces.
	Updating	Sets the csUpdating state in the component's ComponentState property.
	ValidateContainer	Determines whether an object can be inserted into a container.
	ValidateInsert	Provides the interface for a method that validates an child component before it is inserted.
	ValidateRename	Ensures that renaming an owned component does not create name conflict.
	WaitForConnectComplete	This is WaitForConnectComplete, a member of class TADOConnection.
	WillConnect	This is WillConnect, a member of class TADOConnection.
	WillExecute	This is WillExecute, a member of class TADOConnection.
	WriteState	This is WriteState, a member of class TComponent.

Protected Properties

	Name	Description
	StreamedConnected	Indicates whether the Connected property was true when the connection component was loaded from a stream.

Public Methods

	Name	Description
	_AddRef	Increments the reference count for this interface.
	_Release	Decrements the reference count for this interface.
	AfterConstruction	Responds after the last constructor has executed.
	Assign	Copies the contents of another, similar object.
	BeforeDestruction	Performs any necessary actions before the first destructor is called.
	BeforeDestruction	Responds before the first destructor executes.
	BeginTrans	Initiates a new transaction in the associated database.
	Cancel	Aborts an attempt to connect to a data store.
	ClassInfo	Returns a pointer to the runtime type information (RTTI) table for the object type.
	ClassName	Returns a string indicating the type of the object instance (as opposed to the type of the variable passed as an argument).
	ClassNameIs	Determines whether an object is of a specific type.
	ClassParent	Returns the type of the immediate ancestor of a class.
	ClassType	Returns the class reference for the object's class.
	CleanupInstance	Performs finalization on long strings, variants, and interface variables within a class.
	Close	Closes the connection.
	CommitTrans	Commits an open transaction.
	Create	Constructs an instance of the button control and initializes its values.
	DefaultHandler	Provides the interface for a method that processes message records.
	Destroy	Destroys the bitmap button object.
	DestroyComponents	Destroys all owned components.
	Destroying	Indicates that the component and its owned components are about to be destroyed.
	Dispatch	Calls message-handling methods for the object, based on the contents of the Message parameter.
	Execute	This is the overview for the Execute method overload.
	ExecuteAction	This is ExecuteAction, a member of class TComponent.
	FieldAddress	Returns the address of a published object field.
	FindComponent	Indicates whether a given component is owned by the component.
	Free	Destroys an object and frees its associated memory, if necessary.
	FreeInstance	Deallocates memory allocated by a previous call to the System::TObject::NewInstance method.
	FreeNotification	Ensures that AComponent is notified that the component is going to be destroyed.
	FreeOnRelease	Frees the interface reference for components that were created from COM classes.
	GetComponent	Returns a reference to the component associated by the implementing class.
	GetEnumerator	Returns a TComponent enumerator.
	GetFieldNames	This is the overview for the GetFieldNames method overload.
	GetInterface	Retrieves a specified interface.
	GetInterfaceEntry	Returns the entry for a specific interface implemented in a class.
	GetInterfaceTable	Returns a pointer to a structure containing all of the interfaces implemented by a given class.
	GetNamePath	Returns a string used by the Object Inspector.
	GetNamePath	Returns the name of the object as it appears in the Object Inspector.
	GetParentComponent	Returns the containing Component.
	GetProcedureNames	This is the overview for the GetProcedureNames method overload.
	GetTableNames	This is the overview for the GetTableNames method overload.
	HasParent	This is HasParent, a member of class TComponent.
	InheritsFrom	Determines the relationship of two object types.
	InitInstance	Initializes a newly allocated object instance to all zeros and initializes the instance's virtual method table pointer.
	InsertComponent	Establishes the component as the owner of a specified component.
	InstanceSize	Returns the size in bytes of each instance of the object type.
	IsImplementorOf	Indicates whether the component implements a specified interface.
	MethodAddress	This is MethodAddress, a member of class TObject.
	MethodName	This is MethodName, a member of class TObject.
	NewInstance	Allocates memory for an instance of an object type and returns a pointer to that new instance.
	Open	Initiates a connection to a database.
	OpenSchema	Retrieves schema information from the connection's provider.
	QueryInterface	Returns a reference to a specified interface if the object supports that interface.
	ReferenceInterface	Establishes or removes internal links that cause this component to be notified when the implementer of a specified interface is destroyed.
	RemoveComponent	Removes a specified component specified from the component's Components list.
	RemoveFreeNotification	Disables destruction notification that was enabled by FreeNotification
	RollbackTrans	Rolls back an active transaction.
	SafeCallException	Handles exceptions in methods declared using the safecall calling convention.
	SafeCallException	Handles exceptions in methods declared using the safecall calling convention.
	SetSubComponent	Identifies whether the component is a subcomponent.
	UpdateAction	This is UpdateAction, a member of class TComponent.

Public Properties

	Name	Description
	CommandCount	Indicates the number of command components associated with the connection.
	Commands	Lists all active commands for the connection component.
	ComObject	Specifies the interface reference implemented by the component.
	ComponentCount	Indicates the number of components owned by the component.
	ComponentIndex	Indicates the position of the component in its owner's Components property array.
	Components	Lists all components owned by the component.
	ComponentState	Describes the current state of the component, indicating when a component needs to avoid certain actions.
	ComponentStyle	Governs the behavior of the component.
	ConnectionObject	Provides direct access to the ADO connection object.
	DataSetCount	Indicates the number of datasets associated with the connection component.
	DataSets	Provides an indexed array of all active datasets for a connection component.
	DesignInfo	Contains information used by the Form designer.
	Errors	Errors is the implementation of the Errors Collection.
	InTransaction	Indicates whether a transaction is in progress.
	Owner	Indicates the component that is responsible for streaming and freeing this component.
	Properties	This is Properties, a member of class TADOConnection.
	State	Indicates the current state of the ADO connection.
	VCLComObject	Represents information used internally by components that support COM.
	Version	Indicates the version of ADO used.

Published Events

	Name	Description
	AfterConnect	Occurs after a connection is established.
	AfterDisconnect	Occurs after the connection closes.
	BeforeConnect	Occurs immediately before establishing a connection.
	BeforeDisconnect	Occurs immediately before the connection closes.
	OnBeginTransComplete	Occurs after beginning a transaction.
	OnCommitTransComplete	Occurs after committing a transaction.
	OnConnectComplete	Occurs after starting a connection.
	OnDisconnect	Occurs after a connection is terminated.
	OnExecuteComplete	Occurs after a command is executed.
	OnInfoMessage	Occurs when information messages are received from the data store connection.
	OnRollbackTransComplete	Occurs after rolling back a transaction.
	OnWillConnect	Occurs after a request to start a connection.
	OnWillExecute	Occurs after a database server signals acceptance of a command execution.

Published Properties

	Name	Description
	Attributes	Specifies automated transaction behavior.
	CommandTimeout	Specifies amount of time to attempt execution of a command.
	Connected	Specifies whether the connection is active.
	ConnectionString	Specifies the connection information for the data store.
	ConnectionTimeout	Specifies amount of time to attempt a connection.
	ConnectOptions	Specifies whether a connection is synchronous or asynchronous.
	CursorLocation	Specifies whether cursors for the connection is client-side or server-side.
	DefaultDatabase	Indicates the database the ADO connection uses by default.
	IsolationLevel	Specifies the transaction isolation level for transactions.
	KeepConnection	Specifies whether an application remains connected to a database even if no datasets are open.
	LoginPrompt	Specifies whether a login dialog appears immediately before opening a new connection.
	Mode	Indicate the persmissions available to a connection.
	Name	Specifies the name of the component as referenced in code.
	OnLogin	Occurs when a communication channel opens to the server.
	Provider	Specifies the provider for the ADO connection.
	Tag	Stores an integer value as part of a component.

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