• Bound controls provide a way for user input. They differ from standard controls in their behavior.
  • As the user inputs data in a bound control it is automatically validated.
  • If the data is correct it is put in the undo/redo mechanism.
  • If da data is correct the information in the bound control is sent to the bound data-holder(the control model).
  • This transition is two-way.
  • They allow to attach a model and a verification mechanism.
• Bound controls are composed of:
  • a standard control
  • an icon. It icon shows the verification status. It can be either correct (a green tick) or incorrect (a red cross.)
  • a label (optionally).
• We need:
  • Some base bound control which eases bound controls creation
  • Text box
  • Drop-down list
  • Spinner
  • Check-box