i'm new patterns , i've found possible application of observer pattern in application. i've dbgrid on form , want perform action dbgrid.selectedrows.count changes value. in case need way observe dbgrid.selectedrows.count , if > 1 need make panel visible. in other words, if user has selected more 1 row in dbgrid make panel visible, otherwise panel hidden. i've googled around observer pattern examples none of them simple enough case. maybe suffer syndrome of trying complicate simple things ;-)
thank in advance
fabio vitale
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