The Autocomplete field will suggest the information while user typing initial values. Inform text field fields we can able to change as autocomplete field instead of the normal text field. The below is the example text file into a autocomplete field in Drupal 6.
To make view contextual filter textfiled into autocomplete, in our module need to alter the text field into autocomplete by assigning autocomplete path to it. This autocomplete path already defined in module. Below is the steps,