The invention relates to a dishwasher (1) in the form of a programmable automatic machine, which has a programme control device (50) for carrying out at least one treatment programme, a treatment chamber (2) into which and from which wash ware can be manually inserted and removed, a tank (4) into which fluid from the treatment chamber (2) can flow off by gravity, and a washing system (33, 8, 34, 10) with a washing pump (8) and with a washing line system (10) for conveying washing fluid (6) during a washing phase out of the tank (4) through washing nozzles (33, 34) into the treatment chamber (2). In order to achieve an efficient treatment (cleaning and drying) of the wash ware, along with as low a consumption as possible of resources in terms of water, chemicals and, in particular, energy, there is provision, according to the invention, for the dishwasher (1) to have, furthermore, a wash-ware detector device (51) which is designed for detecting the type of wash ware to be treated, furthermore the programme control device (50) being designed to select a predetermined or determinable treatment programme for at least the washing phase automatically as a function of the detected type of wash ware to be treated and to set the process parameters associated with the selected treatment programme.