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[Properties (by Name)] [Methods (by Name)] [Events (by Name)]
Abstract class for connections to a server
Source position: db.pas line 1942
type TCustomConnection = class(TComponent) |
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public |
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procedure Close(); |
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Close the connection |
destructor Destroy; override; |
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Remove the TCustomconnection instance from memory |
procedure Open; |
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Makes the connection to the server |
property DataSetCount: LongInt; [r] |
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Number of datasets connected to this connection |
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Datasets linked to this connection |
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published |
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property Connected: Boolean; [rw] |
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Is the connection established or not |
property LoginPrompt: Boolean; [rw] |
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Should the OnLogin be triggered |
property AfterConnect: TNotifyEvent; [rw] |
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Event triggered after a connection is made. |
property AfterDisconnect: TNotifyEvent; [rw] |
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Event triggered after a connection is closed |
property BeforeConnect: TNotifyEvent; [rw] |
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Event triggered before a connection is made. |
property BeforeDisconnect: TNotifyEvent; [rw] |
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Event triggered before a connection is closed |
property OnLogin: TLoginEvent; [rw] |
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Event triggered when a login prompt is shown. |
end; |
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Abstract class for connections to a server |
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TCustomConnection must be used for all database classes that need a connection to a server. The class introduces some methods and classes to activate the connection (Open) and to deactivate the connection (TCustomConnection.Close), plus a property to inspect the state (Connected) of the connected.
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Makes the connection to the server |
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Close the connection |
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Is the connection established or not |