Below is BeforeRowColChange of my grid class. It prevents leaving the row if not table validation is satisfied. So far so good. Problem :
-Table is buffered
-Say table valid expression is !empty(company)
-User is on company field
-Selects all and presses Del
-Presses up arrow
-At this point table valid is satisfied with oldval() (also eval(...rulexpression)) so cannot be catched and VFP message kicks in.
Any suggestion to fix this up ?

do case
	case mdown()
		nBottom = this.relativerow * this.rowheight
		nTop = nBottom -  this.rowheight
		nMouseRowPos = mrow(wontop(),3)
		if !between(nMouseRowPos,;
			this.top+this.headerheight+nTop,;
			this.top+this.headerheight+nBottom) ;
			and !empty(dbgetprop(this.recordsource,"Table","RuleExpression")) ;
			and !evaluate(dbgetprop(this.recordsource,"Table","RuleExpression"))
			nodefault
			this.WarnMessage()
		endif
	case inlist(lastkey(),24,5,18,3,145) ;
		and !empty(dbgetprop(this.recordsource,"Table","RuleExpression")) ;
		and !evaluate(dbgetprop(this.recordsource,"Table","RuleExpression"))
		this.WarnMessage()
		nodefault
	case lastkey() = 27 ;
		and !empty(dbgetprop(this.recordsource,"Table","RuleExpression")) ;
		and !evaluate(dbgetprop(this.recordsource,"Table","RuleExpression"))
		=tablerevert(.f.)
endcase

MTIA.
Cetin