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dbc_BeforeAddRelation Event

  • [アーティクル]

Occurs before a relation is added to the database. There are two versions of the syntax.

PROCEDURE dbc_BeforeAddRelation(cRelationID, cTableName, cRelatedChild, 
   cRelatedTable, cRelatedTag)

PROCEDURE dbc_BeforeAddRelation
LPARAMETERS cRelationID, cTableName, cRelatedChild, cRelatedTable, 
   cRelatedTag

Parameters

  • cRelationID
    Specifies the Relation ID number stored in the database.

  • cTableName
    Specifies the name of the parent table.

  • cRelatedChild
    Specifies the name of the linked column.

  • cRelatedTable
    Specifies the table containing the linked column.

  • cRelatedTag
    Specifies the index tag of the parent table.

Remarks

You can use the dbc_BeforeAddRelation event to verify appropriate values for the parameters in a procedure that tracks, or manages access to the database before a relation is added to the database.

Return .F. from this procedure to prevent the relation from being added.

See Also

Tasks

How to: Enable or Disable DBC Events

Reference

dbc_AfterAddRelation Event

Other Resources

Events (Visual FoxPro)