Hi Mike,

I just found, that it was already this way. Originally I put my code in Form's Error method, but later I understood, that Biz object Error method is the place to put it. So here is my current BizObj Error method:

LPARAMETERS tnError, tcMethod, tnLine, tcSys16, toErrObj, tcMessage
IF m.tnError = 1839 && SQL-Select was cancelled	
   
	IF VARTYPE(m.plStop) = "L" AND m.plStop 
		* Have we stopped already?
		this.lRepeatRequery = .f.
	ELSE
		* RETRY  - doesn't work
		this.lRepeatRequery = .t.
	ENDIF
ELSE
	DODEFAULT(m.tnError, m.tcMethod, m.tnLine, m.tcSys16, m.toErrobj, m.tcMessage)
ENDIF

And here is an excerpt from the PopulateCursor method:

LOCAL lnRequeryResult 
	lnRequeryResult = .REQUERY() && requeries the initially selected alias
    * I found, that requery returns -3 if interrupted - this is not documented in the Help
    
    DO WHILE .lRepeatRequery = .t. and m.lnRequeryResult < 0 && the user tried to stop it 
        lnRequeryResult = .requery()       
    *    .lRepeatRequery = .f.
    ENDDO     
    
    ** What if requery returns 0 - it means some problems with the view 

>By the way, Nadya
>
>This code has a problem.
>
>

LPARAMETERS nError, cMethod, nLine, tcSys16, toErrObj
>IF m.nError = 1839 && Requery cancelled	
>
>	IF VARTYPE(m.plStop) = "L" AND m.plStop
>		* Have we stopped already?
>	ELSE
>		RETRY
>	ENDIF
>ELSE
>	DODEFAULT(nError, cMethod, nLine, tcSys16, toErrObj)
>ENDIF

>
>I think you should code it like this...
>
>

LPARAMETERS m.tnError, m.tcMethod, m.tnLine, m.tcSys16, m.toErrObj
>IF m.tnError = 1839 && Requery cancelled	
>
>	IF VARTYPE(m.plStop) = "L" AND m.plStop
>		* Have we stopped already?
>	ELSE
>		RETRY
>	ENDIF
>ELSE
>	DODEFAULT(m.tnError, m.tcMethod, m.tnLine, m.tcSys16, m.toErrObj)
>ENDIF

>
>Because! nError with or without the mdot is possibly a field name in some naming conventions. You can run into a conflict. Further, you are mixing different types of notations. nError and toErr. Every parameter is supposed to be prefaced with "t". You can and IMO should name them properly.