Question

I have seen many websites that if you write something in text box and press space, the words become locked with a cross mark (X) on right on top … and when you click cancel the word disappears.

I am having trouble understanding the description, for example of the StackOverflow TAG section when you ask a question page.

How can I achieve this with an ASP.NET text box?

Answer 1

If you don’t like jQuery chosen then try Manifest

Manifest (License: MIT, examples) also by Justin Stayton enhances text inputs so multiple items can be selected and edited. The API is very consistent with Marco Polo, and Manifest can take a marcoPolo object if autocomplete functionality is required.

  $('#recipients').manifest({
      marcoPolo: {
        url: '/contacts/search',
        formatItem: function(data) {
          return '"' + data.name + '" (' + data.email + ')';
        }
      }
    });

The author also points out how these plugins differ from the popular Chosen plugin:

If you want to make a select element with a lot of options more
user-friendly, use Chosen. If you can’t reasonably list out every
possible option (like all users in a system), or you need to allow
arbitrary values (like new tags), use Manifest.

Source: DailyJS