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Data.DB.TCustomConnection

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System.Classes.TComponentSystem.Classes.TPersistentSystem.TObjectTCustomConnection

Delphi

TCustomConnection = class(TComponent)

C++

class PASCALIMPLEMENTATION TCustomConnection : public System::Classes::TComponent

Properties

Type Visibility Source Unit Parent
class public
Data.DB.pas
Data.DB.hpp
Data.DB Data.DB

Description

TCustomConnection is the base class for components that connect datasets to a remote source of data.

Use TCustomConnection as a base class for components that represent a remote source of the data contained in a dataset. This source can be a remote database server, the middle tier of a multi-tiered database application, an interface such as the one used by ActiveX Data Objects (ADO), or any other driver that provides the information represented in a dataset. TCustomConnection introduces:

  • Methods for connecting to and disconnecting from the source of data.
  • Login support for providing a user name and password when establishing a connection.
  • Properties for keeping track of the datasets that use the connection component.

Do not create instances of TCustomConnection. To add a component that represents the connection to a source of data, use a TCustomConnection descendant such as TDatabase, TADOConnection, TSQLConnection, or one of the DataSnap connection components such as TDCOMConnection or TSOAPConnection.

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