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as u can see at room no 109 there is no customer and its on first floor in my db design , room and floor are fixed for the hotel so what wud be the query to insert customer in room no 109 along with RentDate,LeavingDate,Contract pls pls let me know asap thx in advance imti roomno...

[hi there a text box and a print button in group box.. when we dont type in text box i want the print button to disable ..but no longer we start typing in text box the print button will enable and then if we click on print then it will print . how its to be done ...????pls help me ..i m a new...