RadControls for ASP.NET AJAX
Telerik RadAutoCompleteBox for ASP.NET AJAX is a powerful drop-down list control which gives
the ability to select multiple entries, displaying them as a sequence of strings separated by a
delimiter, or fancy styled tokens depending on your preferences.
How RadAutoCompleteBox works?
When a user starts typing into the input area, the data contained in the drop-down container
is filtered against the typed text. The first entry to match the typed
text is highlighted, whilst the others are only listed in the drop-down list. The user
is able to select an entry by pressing the 'Enter' key, which marks the entry as selected and
puts it in the input area. After a selection is made the drop-down list closes, leaving
the focus on the input area which gives the user a possibility to continue the selection.
The user is also given the possibility to traverse the entries, by either using the 'Up' and
'Down' arrow keys, or by using the mouse.
One fascinating feature supported out-of-the-box by RadAutoCompleteBox is the ability to insert
new entries at runtime. That is, if the user types a text, which does not match any of the items
already contained in the drop-down list, and types the defined delimiter next to it, presses the 'Enter' key,
the item will be added in the Entry collection of the control visualizing the result in the input area. The text
typed in the input area will represent the new entry’s text.
The entries currently present in the input area are deleted by pressing the "Backspace" key regardless of the input type.
When the entries are displayed as tokens, the user can also use the ‘X’ button, placed
in the upper right corner, to delete the token.
Control which allows the user to type anything in the input area and still provide suggestions
based on the text typed.
Control which allows multiple entries to be present in the input area, separating them by a previously defined delimiter.
Control which provides the ability to display the entries currently present in the input area as separate tokens either
on single, or multiple lines.
Why choose RadAutoCompleteBox?
Because of its intuitive UI for filtering and selecting multiple entries from a large list.
Because of the operations supported which include selecting, removing, and navigating through
the entries as well as through the drop-down items by using the mouse, or the keyboard.
And last but not least, a very important fact about RadAutoCompleteBox is
its ability to be populated with data from various data sources. The control can be populated
by defining declarative items, by server-side binding (DataSource controls), and by client-side binding
(Web service, WCF, service, and OData).
Summary of features supported by RadAutoCompleteBox
Declarative entries – defined in the markup, in the Entries section.
Server-side – server API for setting data source using DataSource controls, to which RadAutoCompleteBox is bound.
Client-side – client API for setting data source using Web services, WCF services, and OData, to which RadAutoCompleteBox is bound.
Filtering – client filter based on the users’ input. Users are
given the possibility to choose from 'StartsWith' and 'Contains' filter mode. The default
filter mode is set to 'Contains'.
Text and Token Input Types – depending on users’ preference, the
selected items are displayed either as a sequence of strings separated by delimiter, or
as tokens. The property to set the preferred visual appearance is InputType – the options to
choose from are 'Text' and 'Token', having the 'Token' input type set by default.
Selecting items from the drop-down container
– allows selection of multiple items from the drop-down list, inserting them to the Entry collection
of the control and visualizing them in the input area.
Templates – provides the ability to define your own visual
presentation of the entries contained in the drop-down area.
Server as well as client templates are supported out-of-the-box by RadAutoCompleteBox.