With an editable drop-down list, users aren't going to be aware of the alternatives until the list is dropped. Do users need to locate an item rapidly in a large list? Win32 only If so, use a combo box because users can select an item by typing its full name. By contrast, the Win32 drop-down list selects items based only by the last character typed so typing "Jun" into a list of months would match November, not June.
In this case, use a combo box even if the possible choices are constrained. For drop-down lists, the number of items in the list isn't a factor in choosing the control because they scale from thousands of items all the way down to one.
Editable drop-down lists scale from thousands of items down to none, because users can enter a value that isn't in the list. Because drop-down lists can be used for data, the number of items might not be known in advance and perhaps cannot be guaranteed. Always include at least three items in editable list boxes to justify the additional screen space.
Sort list items in a logical order , such as grouping highly related options together, placing most common options first, or using alphabetical order.
Sort names in alphabetical order, numbers in numeric order, and dates in chronological order. Lists with 12 or more items should be sorted alphabetically to make items easier to find. In this example, the list items are sorted in alphabetical order except for the option that represents all items. Place options that represent All or None at the beginning of the list, regardless of the sort order of the remaining items. In this example, " None " is a meta-option because it is not a valid value for the choice rather it describes that the option itself isn't being used.
When disabling a drop-down list or combo box, also disable any associated labels and command buttons. When a single drop-down list is used to change the view of an associated control, change the view immediately on selection instead of requiring a separate command button. Use a separate command button only if the list takes a significant amount of time to render. However, list headers and menu buttons are the preferred controls for this purpose. Don't have blank list items use meta-options instead.
Users don't know how to interpret blank items, whereas the meaning of meta-options is explicit. Use previews in the list items when it is better to show with images than describe using text alone.
In this example, the preview icons are unnecessary because they don't communicate any information. Limit the length of the input text when you can. For example, if the valid input is a number between 0 and , use a combo box that is limited to three characters.
If there are many possible options, focus the list contents on the most likely options. Because users can enter values that aren't in the list, combo boxes don't have to list all choices, just the likely choices or a representative sample. A prompt is a label or short instruction placed inside an editable drop-down list as its default value. Unlike static text, prompts disappear from the screen once users type something into the combo box or it gets input focus.
Don't use prompts just to direct users to select something from the list or to click buttons. For example, prompts like Select an option or Enter a filename and then click Send are unnecessary. In this example, screen space is not at a premium; once an editable drop-down list is filled out, it is difficult for users to remember what it is for; and the prompt text is editable and drawn the same way as real text. Write the label as a word or phrase, not as a sentence, and end it with a colon.
Hi, What is the difference between html drop down list and list box? Please Sign up or sign in to vote. See more: ASP. HI, i am having one doubt,what is the difference between dropdownlist and list box? Thanks in Advance Posted 9-Jun am Member Add a Solution. ZurdoDev 9-Jun pm. Dropdown has a an arrow that drops down. Listbox is a box that has a list of items. These are very simple, easy, questions. Do you have visual studio? Just drop them on a page and see what they are.
Top Rated Most Recent. Accept Solution Reject Solution. If you use MVC you only have to use the helpers come with Posted 9-Jun pm Kornfeld Eliyahu Peter. Sergey Alexandrovich Kryukov Jun am.
I voted 4 this time. It wold be good to explain how it works, as our inquirer is apparently confused with the principles. Besides, there are different implementation of similar things under the same names in "System. Mvc" and "System. Web", which are different assemblies. I tried to clarify it in Solution 2, please see. First of all, note that the question about "difference" makes no sense, as it usually happens with this uncertain concept. What would it supposed to mean?
Is there any difference between drop down box and combo box? Ask Question. Asked 11 years, 9 months ago. Active 1 year, 3 months ago. Viewed 91k times. Is there any difference between drop down box and combo box [ HTML ]? Matt Rockwell 1 1 gold badge 6 6 silver badges 20 20 bronze badges.
Rakesh Juyal Rakesh Juyal Your senior is correct, although the combo box that MSDN uses is simply a drop down. Microsoft has it wrong. Add a comment. Active Oldest Votes. See the Wikipedia article on Combo Box emphasis mine : A combo box is a commonly-used graphical user interface widget. So your senior is right. Pekka Pekka k gold badges silver badges bronze badges. I guess he is getting at the fact a combo box is a combination of an input text field and a list of options.
You can type in stuff in the input field and the list should update to highlight a possible match a dropdown is just a list of options that drops down when you click on the arrow button.
You can only choose from a list of predefined options.
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