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Control Choice - Do you use Checked List Boxes instead of multi-select List Boxes?
  v3.0 Posted at 25/03/2017 4:10 AM by Tiago Araujo
Multi-select listboxes are the bane of a graphical user interface, they have a number of behavioral quirks that make it difficult for users to get used to them:
  • They require users to know that you select more than one entry by holding down the Ctrl key
  • They lose all selections if you click in the wrong place.
  • You can't tell if a Listbox is single-select or multi-select at first glance.
Figure: Bad Example - List Boxes are impractical - try it and see

Checked Listboxes are the ideal alternative. They're much more pleasant to use and are a good deal more intuitive - compare to the list above. Checked Listboxes tell users immediately that they have the ability choose multiple options.

  • In ASP.NET, use System.Web.UI.WebControls.CheckBoxList. If you're having problems with there being too many items in the list, use a scrolling DIV
  • In Windows Forms, use System.Windows.Forms.CheckedListBox
Figure: Good Example - The beauty of the CheckListBox in ASP.NET

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