Voy a escribir en ingles porque es mas facil para me esplicar te...
<<¿Son propiedades o métodos de las que me hablas?>>
No. The Error event is an event that is called when an error occurs. If one of your triggers fail this will cause the error event to fire. I'm pretty sure Kevin is catching all errors (even failed triggers).
In the msgsvc.dbf there are already two entries that can be used if needed. One is for Triggers that failed and the other is for Inserts that failed.
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I'll have to check more into this behavior - I wasn't aware that it's not behaving like in prior version.
In the meantime, you can set the lMustKey Property on the control to .T. - this will force the user to enter something in that field. You can also put code in the BizRule Class of the BizObj to check for valid data in the control. If any of the rules fail the framework will automatically display messages to the user.
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I don't understand why the framework wouldn't be displaying messages when errors occur.
Hope this helps.
Vic
